Cognitive Development Essay

Cognitive development is concerned with how thinking processes flow from childhood through adolescence to adulthood by involving mental processes such as remembrance, problem solving, and decision-making. It therefore focuses on how people perceive, think, and evaluate their world by invoking the integration of genetic and learned factors.

Hence, cognitive development mainly concentrates on “areas of information processing, intelligence, reasoning, language development, and memory” (Kendler, 1995, p.164). In essence, cognitive development theory reveals how people think and how thinking changes over time.

The basic premises of cognitive development theory

The premises of cognitive development theory largely allow future investigation to amplify, specify, and modify them according to data trends. These premises frame the theory in a way that it addresses the structure, working, and progress of the system that governs discrimination learning.

Primarily, the theory is based on observable behaviors and indirectly defined theoretical constructs. These constructs assume that psychological and neurological theorizing about cognitive development will gradually coalesce (Kendler, 1995). The premises take form of two different approaches that have been developed over the years.

The first approach postulates that thinking is a universal sequence of stages, while the second approach postulates that people process information in a similar manner computers do (Kail & Cavanaugh, 2008, p.13). One of the best-known examples of the first approach is Piaget’s theory of development that explains how children construct their knowledge, and how the format of their knowledge changes over time.

The second approach is exemplified by Information processing theory that focuses on how computers work to explain thinking and its development through childhood and adolescence.

The cognitive development theory has application in various areas such as works of Aaron Beck and Albert Ellis with the Beck Depression Inventory (BDI) and the Beck Anxiety Inventory (BAI), both being very popular quick assessments of an individual’s functioning (Kail & Cavanaugh, 2008).

Discussion of Piaget Theory and Vygotsky Theory on Intelligence Development

The next part of this paper will be a discussion of the works of Piaget and Vygotsky, including comparison and contrast of their views on various aspects of cognitive development theory.

Jean Piaget was one of the most influential developmental psychologists of the 20 th century, who believed that children naturally make sense of their world.

Lev Vygotsky, a Russian psychologist, was one of the first theorists to emphasize that children’s thinking develops through influence of the socio-cultural context in which children grow up rather than developing in a void. Piaget observed children’s past and potential interaction with their environment as being determined by their schemas, which are modified by the processes of assimilation and accommodation.

According to Kail & Cavanaugh (2008), assimilation may be described as a process that allows a child to add “new information by incorporating it into an existing schema.” For Piaget, enhancing a balance or truce between assimilation and accommodation in the schemas definitely leads to cognitive development.

This unlike Vygotsky, whose view is that cognitive growth occurs in a socio-cultural context that influences the form it takes, for instance, a child’s most remarkable cognitive skills are shaped by social interactions with parents, teachers, and other competent partners (Shaffer & Kipp, 2009).

Thus, cognitive development is more of an apprenticeship in which children develop through working with skilled adult assistants. Both Piaget and Vygotsky held the view that children’s thinking becomes more complex as they develop, highlighting that this change is influenced by the more complex knowledge that children construct from the more complex thinking.

Stages of development in both theories

Both theorists explain cognitive development in four distinct stages, but each of them explains these stages in different aspects and perspectives. According to Piaget, cognitive development takes place in “four distinct, universal stages, each characterized by increasingly sophisticated and abstract levels of thought” (Kendler, 1995).

These stages include sensorimotor stage (infancy) that begins from birth to 2 years and is characterized infant’s knowledge being demonstrated in six sub-stages through sensory and motor skills. The second stage is pre-operational stage (2 to 6 years) during which a child learns how to use symbols such as words and numbers to represent various aspects of the world but relates to the world only through his or her perspective.

Additionally, “concrete operational stage is characterized by seven types of conservation,” with “intelligence being demonstrated through logical and systematical manipulation of symbols related to concrete objects” (Kail & Cavanaugh, 2008).

In this third stage, operational thinking develops while the egocentric thinking diminishes. Lastly, formal operational stage, which occurs in late stages of human development or old age, involves “logical use of symbols related to abstract concepts” signifying a more complex and mature way of thinking (Kail & Cavanaugh, 2008).

A departure from Piaget, Vygotsky proposed that we should evaluate development from perspective of four interrelated levels in interaction with children’s environment. These stages include ontogenetic development, which refers to development of the individual over his or her lifetime.

Secondly, Microgenetic development refers to changes that occur over brief periods such as minutes, a few days, or seconds. In addition, Phylogenetic development refers to changes over evolutionally time. Lastly, sociohistorical development refers to changes that have occurred in one’s culture and the values, norms, and technology, such as a history has generated (Shaffer & Kipp, 2009).

Classroom Application of Both Theorists’ Views

Both theorists’ views can find classroom application in trying to explain educational process. For Piaget, children learn because naturally, all children want to understand their world. According to Piaget, early children’s life up to adolescence stage presents them with an urge to explore and try to “understand the workings of both the physical and the social world” (Kail & Cavanaugh, 2008).

Whereas, Vygotsky would explain education as being shaped by cultural transmission, since the fundamental aim of all societies is to impart on their children, the basic cultural values, and skills. For example, most parents in western nations want their children to do well in their studies and obtain a college degree, as this may lead to a good job.

However, parents in African countries such as Mali want their children to learn activities such as farming, herding animals, hunting, and gathering of food, as these skills may enhance their survival in their environment. Thus, each culture provides its children with tools of intellectual adaptation that permit them to use their basic mental functions more adaptively (Shaffer & Kipp, 2009).

Piaget theory would be limited in explaining academic excellence, since it views education as a natural process, while Vygotsky would explains that as a product of cultural environment that influences a student to excel. Educationally, Piaget provided an accurate overview of how children of different ages think and asked crucial questions that drew literally, thousands of scholars to the study of cognitive development.

According to Vygotsky, children are active participants in their education, with teachers in Vygotsky’s classroom favoring a guided participation, in which they structure learning activity, as well as guiding, monitoring, and promoting cooperative learning process.

Piaget’s theory would be limited in explaining academic excellence, since it views education as a natural process, while Vygotsky would explain that as a product of cultural environment that influences a student to excel.

Educationally, Piaget provided an accurate overview of how children of different ages think, and asked crucial questions that drew literally, thousands of scholars to the study of cognitive development. In essence, these theories laid grounds for other developmental theorists to further their views or critique them, leading to other cognitive development theories.

Kail, R.V. & Cavanaugh, J.C. (2008). Human Development: A Life-Span View . OH: Cengage Learning.

Kendler, T.S. (1995). Levels of cognitive development. NJ: Routledge.

Shaffer, D.R. & Kipp, K. (2009). Developmental Psychology: Childhood and Adolescence. Eighth edition. OH: Cengage Learning.

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Jean Piaget Biography (1896-1980)

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personal essay about cognitive development

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  • Career and Theories
  • Contributions
  • Influence on Psychology

Jean Piaget Quotes

Frequently asked questions.

Jean Piaget was a Swiss psychologist and genetic epistemologist. You may have heard of Jean Piaget's theory of cognitive development, for which he is famous. This theory looks at how children develop intellectually throughout the course of childhood.

At a Glance

Jean Piaget helped shape our foundational knowledge of childhood cognitive development. His theories have influenced not just the field of developmental psychology, but also other fields, including sociology, education, and more.

Overview of Piaget's Life and Work

Prior to Piaget's theory, children were often thought of simply as mini-adults. Instead, Piaget suggested that the way children think is fundamentally different from the way that adults think.

Piaget's theory had a tremendous influence on the emergence of developmental psychology as a distinctive subfield within psychology and contributed greatly to the field of education. He is also credited as a pioneer of the constructivist theory , which suggests that people actively construct their knowledge of the world based on the interaction between their ideas and experiences.

In a 2002 survey of 1,725 American Psychological Society members, Piaget was named the second most influential psychologist of the 20th century.

Best Known For

  • Theory of cognitive development
  • Developing the term "genetic epistemology" (the study of the origins of knowledge)

Biography of Piaget's Life

Jean Piaget was born in Switzerland on August 9, 1896, and began showing an interest in the natural sciences at a very early age.

By the time he was 11, Piaget had already started his career as a researcher by writing a short paper on an albino sparrow.

Piaget continued to study the natural sciences and received his doctorate in zoology from the University of Neuchâtel in 1918. During this time, he published two essays that provided a foundation for his future thoughts and theories.

While his early career consisted of work in the natural sciences, during the 1920s he began to move toward work as a psychologist.

Personal Life

Piaget married Valentine Châtenay in 1923 and the couple went on to have three children. Piaget's observations of his own children served as the basis for many of his later theories.

Later Years

In 1925, Piaget returned to the University of Neuchâtel as a professor of psychology, sociology, and philosophy. From 1929 to 1967, he served as the Director of the International Bureau of Education in Geneva. He also taught at the University of Geneva.

Piaget founded the International Center for Genetic Epistemology in 1955. He died in 1980 and was buried in Geneva.

Piaget Biographies

There have been numerous biographies written about Piaget's life, including "Conversations With Jean Piaget " by Jean-Claude Bringuier (1980) and "Jean Piaget, the Man and His Ideas" by Richard Evans (1973).

Piaget also wrote his autobiography for a chapter in "History of Psychology in Autobiography," volume 4, published in 1952.

Piaget's Career and Theories

Piaget had several ideas or theories about cognitive development throughout his career.

Intellectual Development

Piaget developed an interest in psychoanalysis and spent a year working at a boys' institution created by Alfred Binet . Binet is known as the developer of the world's first intelligence test, and Piaget took part in scoring these assessments.

Roots of Knowledge

Piaget identified himself as a genetic epistemologist. In his paper Genetic Epistemology, Piaget explained, "What the genetic epistemology proposes is discovering the roots of the different varieties of knowledge, since its elementary forms, following to the next levels, including also the scientific knowledge."

Epistemology is a branch of philosophy that is concerned with the origin, nature, extent, and limits of human knowledge. Piaget was interested not only in the nature of thought but also in how it develops and how genetics impact this process.

His early work with Binet's intelligence tests led Piaget to conclude that children think differently than adults. While this is a widely accepted notion today, it was considered revolutionary at the time. It was this observation that inspired his interest in understanding how knowledge grows throughout childhood.

Piaget suggested that children sort the knowledge they acquire through their experiences and interactions into groupings known as schemas . When new information is acquired, it can either be assimilated into existing schemas or accommodated through revising an existing schema or creating an entirely new category of information.

Stages of Cognitive Development

Today, Jean Piaget is best known for his research on children's cognitive development. Piaget studied the intellectual development of his own three children and created a theory that described the stages that children pass through in the development of intelligence and formal thought processes.

The four stages of Piaget's theory are as follows:

  • Sensorimotor stage : The first stage of development lasts from birth to approximately age 2. At this point in development, children know the world primarily through their senses and movements.
  • Preoperational stage : The second stage of development lasts from the ages of 2 to 7 and is characterized by the development of language and the emergence of symbolic play.
  • Concrete operational stage : The third stage of cognitive development lasts from the age of 7 to approximately age 11. At this point, logical thought emerges, but children still struggle with abstract and theoretical thinking.
  • Formal operational stage : In the fourth and final stage of cognitive development, lasting from age 12 and into adulthood, children become much more adept at abstract thought and deductive reasoning.

Additional Reading

For further exploration of Piaget's ideas, consider reading some of the source texts. The following are a few of Piaget's best-known works.

  • "Origins of Intelligence in the Child," 1936
  • "Play, Dreams and Imitation in Childhood," 1945
  • "Main Trends in Psychology." 1970
  • "Genetic Epistemology," 1970
  • "Memory and intelligence," 1973

Piaget's Contributions to Psychology

Piaget contributed to psychology in various ways. He provided support for the idea that children think differently than adults and his research identified several important milestones in the mental development of children. His work also generated interest in cognitive and developmental psychology.

Piaget's theories are widely studied today by students of both psychology and education. In the case of the latter, he once said, "The principle goal of education in the schools should be creating men and women who are capable of doing new things, not simply repeating what other generations have done."

Piaget's Influence on Psychology

Piaget's theories continue to be studied in the areas of psychology, sociology, education, and genetics. His work contributed to our understanding of the cognitive development of children. Piaget helped demonstrate that childhood is a unique and important period of human development.

In their 2005 text, "The Science of False Memory," authors C.J. Brainerd and V.F. Reyna wrote of Piaget's influence: "In the course of a long and hugely prolific career, he contributed important scholarly work to fields as diverse as the philosophy of science, linguistics, education, sociology, and evolutionary biology. Above all, however, he was the developmental psychologist of the 20th century.

For two decades, from the early 1960s to the early 1980s, Piagetian theory and Piaget's research findings dominated developmental psychology worldwide, much as Freud's ideas had dominated abnormal psychology a generation before. Almost single-handedly, he shifted the focus of developmental research away from its traditional concerns with social and emotional development and toward cognitive development."

Influence on Psychologists

Piaget's work influenced other notable psychologists including Howard Gardner and Robert Sternberg .

  • Howard Gardner : Gardner developed the theory of multiple intelligences in the 1970s and 1980s. Unlike Piaget, Gardner believed that there are various types of intelligence vs. a single type of intelligence of which people have greater or lesser amounts. Gardner cited Piaget as greatly influencing his work, as he sought to prove Piaget's theory wrong.
  • Robert Sternberg : Similar to Gardner, Sternberg's work uses classical theories of intelligence like Piaget's, but contradicts them. Sternberg is best-known for his triarchic theory of intelligence in which he posits there are three types of intelligence: practical, creative, and analytical. According to Sternberg, IQ tests only measure analytic intelligence, which doesn't give a complete picture of someone's intelligence.

Influence on Education

Piaget's work continues to influence education. He advocated for the following principles, which are still often used in classrooms:

  • Discovery learning : This emphasizes the idea that children should be given the freedom to explore and discover new information on their own. A learning environment should also provide courses such as music, dance, and art.
  • Problem-solving : Piaget believed that children should be taught by solving problems; in addition, teachers should pay attention to how a child arrives at a correct answer.
  • Stage-based teaching : Since each child falls into a different stage of cognitive development (and children progress through the stages in their own time), Piaget believed it was important that the learning environment reflects which stage a child is in.

Here is a selection of some of Jean Piaget's most famous quotes.

On Genetic Epistemology

"What the genetic epistemology proposes is discovering the roots of the different varieties of knowledge, since its elementary forms, following to the next levels, including also the scientific knowledge."

"The fundamental hypothesis of genetic epistemology is that there is a parallelism between the progress made in the logical and rational organization of knowledge and the corresponding formative psychological processes. With that hypothesis, the most fruitful, most obvious field of study would be the reconstituting of human history—the history of human thinking in prehistoric man. Unfortunately, we are not very well informed in the psychology of primitive man, but there are children all around us, and it is in studying children that we have the best chance of studying the development of logical knowledge, physical knowledge, and so forth."

On Cognitive Development

"Knowing reality means constructing systems of transformations that correspond, more or less adequately, to reality. They are more or less isomorphic to transformations of reality. The transformational structures of which knowledge consists are not copies of the transformations in reality; they are simply possible isomorphic models among which experience can enable us to choose. Knowledge, then, is a system of transformations that become progressively adequate."

On Education

"Children have real understanding only of that which they invent themselves, and each time that we try to teach them something too quickly, we keep them from reinventing it themselves."

On Intelligence

"Furthermore, intelligence itself does not consist of an isolated and sharply differentiated class of cognitive processes. It is not, properly speaking, one form of structuring among others; it is the form of equilibrium towards which all the structures arise out of perception, habit and elementary sensorimotor mechanisms tend."

Piaget is known for his theory of cognitive development that first introduced the notion that children think differently than adults, which was a new way of thinking at the time. He is also known for creating the term "genetic epistemology," which refers to the study of knowledge development.

Children begin to develop language during the preoperational stage, according to Piaget's theory. This is the second stage of development and begins when the child is around 2 years of age and lasts until they are roughly 7.

Piaget defined egocentrism as a mindset that "vivifies the external world and materialises the internal world." Put simply, it is having a greater focus on one's own thoughts and feelings than on the thoughts and feelings of others.

Piaget theorized that egocentrism developed between the stages of autistic thought (thought that is undirected and symbolic) and scientific thought (thought that is more logical and socialized)—which is roughly between the ages of 3 and 7.

Piaget's cognitive development theory changed the way we look at child development—namely, that children have different thought processes than adults. His contributions greatly influenced future developmental theories within the psychology field while also impacting other fields as well, such as education, sociology, and genetics.

Larcher V. Children are not small adults: Significance of biological and cognitive development in medical practice . Handbook Philos Med. 2015. doi:10.1007/978-94-017-8706-2_16-1

University of Kentucky. Study ranks the top 20th century psychologists .

Piaget J. Genetic epistemology . Am Behav Sci . 1970;13(3):459-480. doi:10.1177/000276427001300320

APA Dictionary of Psychology. Piagetian theory . American Psychological Association.

Valsiner J, Molenaar PCM, Lyra MCDP, Chaudhary N, eds. Dynamic Process Methodology in the Social and Developmental Sciences . Springer New York.

Brainerd CJ, Reyna VF. The Science of False Memory . Oxford University Press. doi:10.1093/acprof:oso/9780195154054.001.0001

Shearer B. Multiple intelligences in teaching and education: Lessons learned from neuroscience .  J Intell . 2018;6(3):38. doi:10.3390/jintelligence6030038

Sternberg RJ. Intelligence .  Dialogues Clin Neurosci . 2012;14(1):19-27. doi:10.31887/DCNS.2012.14.1/rsternberg

R, Madanagopal D. Piaget’s theory and stages of cognitive development- An overview . SJAMS. 2020;8(9):2152-2157. doi:10.36347/sjams.2020.v08i09.034

Peterson, Thomas.  Epistemology and the Predicates of Education: Building Upon a Process Theory of Learning . United Kingdom, Taylor & Francis, 2019.

APA Dictionary of Psychology. Genetic epistemology . American Psychological Association.

Kesselring T, Muller U. The concept of egocentrism in the context of Piaget's theory . New Ideas Psychol . 2011;29(3):327-45. doi:10.1016/j.newideapsych.2010.03.008

Jean Piaget Society. About Jean Piaget .

By Kendra Cherry, MSEd Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book."

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Cognitive Development Theory: What Are the Stages?

Sensorimotor stage, preoperational stage, concrete operational stage, formal operational stage.

Cognitive development is the process by which we come to acquire, understand, organize, and learn to use information in various ways. Cognitive development helps a child obtain the skills needed to live a productive life and function as an independent adult.

The late Swiss psychologist Jean Piaget was a major figure in the study of cognitive development theory in children. He believed that it occurs in four stages—sensorimotor, preoperational, concrete operational, and formal operational.

This article discusses Piaget’s stages of cognitive development, including important concepts and principles.

FatCamera / Getty Images

History of Cognitive Development

During the 1920s, the psychologist Jean Piaget was given the task of translating English intelligence tests into French. During this process, he observed that children think differently than adults do and have a different view of the world. He began to study children from birth through the teenage years—observing children who were too young to talk, and interviewing older children while he also observed their development.

Piaget published his theory of cognitive development in 1936. This theory is based on the idea that a child’s intelligence changes throughout childhood and cognitive skills—including memory, attention, thinking, problem-solving, logical reasoning, reading, listening, and more—are learned as a child grows and interacts with their environment.

Stages of Cognitive Development

Piaget’s theory suggests that cognitive development occurs in four stages as a child ages. These stages are always completed in order, but last longer for some children than others. Each stage builds on the skills learned in the previous stage.

The four stages of cognitive development include:

  • Sensorimotor
  • Preoperational
  • Concrete operational
  • Formal operational

The sensorimotor stage begins at birth and lasts until 18 to 24 months of age. During the sensorimotor stage, children are physically exploring their environment and absorbing information through their senses of smell, sight, touch, taste, and sound.

The most important skill gained in the sensorimotor stage is object permanence, which means that the child knows that an object still exists even when they can't see it anymore. For example, if a toy is covered up by a blanket, the child will know the toy is still there and will look for it. Without this skill, the child thinks that the toy has simply disappeared.

Language skills also begin to develop during the sensorimotor stage.

Activities to Try During the Sensorimotor Stage

Appropriate activities to do during the sensorimotor stage include:

  • Playing peek-a-boo
  • Reading books
  • Providing toys with a variety of textures
  • Singing songs
  • Playing with musical instruments
  • Rolling a ball back and forth

The preoperational stage of Piaget's theory of cognitive development occurs between ages 2 and 7 years. Early on in this stage, children learn the skill of symbolic representation. This means that an object or word can stand for something else. For example, a child might play "house" with a cardboard box.

At this stage, children assume that other people see the world and experience emotions the same way they do, and their main focus is on themselves. This is called egocentrism .

Centrism is another characteristic of the preoperational stage. This means that a child is only able to focus on one aspect of a problem or situation. For example, a child might become upset that a friend has more pieces of candy than they do, even if their pieces are bigger.

During this stage, children will often play next to each other—called parallel play—but not with each other. They also believe that inanimate objects, such as toys, have human lives and feelings.

Activities to Try During the Preoperational Stage

Appropriate activities to do during the preoperational stage include:

  • Playing "house" or "school"
  • Building a fort
  • Playing with Play-Doh
  • Building with blocks
  • Playing charades

The concrete operational stage occurs between the ages of 7 and 11 years. During this stage, a child develops the ability to think logically and problem-solve but can only apply these skills to objects they can physically see—things that are "concrete."

Six main concrete operations develop in this stage. These include:

  • Conservation : This skill means that a child understands that the amount of something or the number of a particular object stays the same, even when it looks different. For example, a cup of milk in a tall glass looks different than the same amount of milk in a short glass—but the amount did not change.
  • Classification : This skill is the ability to sort items by specific classes, such as color, shape, or size.
  • Seriation : This skill involves arranging objects in a series, or a logical order. For example, the child could arrange blocks in order from smallest to largest.
  • Reversibility : This skill is the understanding that a process can be reversed. For example, a balloon can be blown up with air and then deflated back to the way it started.
  • Decentering : This skill allows a child to focus on more than one aspect of a problem or situation at the same time. For example, two candy bars might look the same on the outside, but the child knows that they have different flavors on the inside.
  • Transitivity : This skill provides an understanding of how things relate to each other. For example, if John is older than Susan, and Susan is older than Joey, then John is older than Joey.

Activities to Try During the Concrete Operational Stage

Appropriate activities to do during the concrete operational stage include:

  • Using measuring cups (for example, demonstrate how one cup of water fills two half-cups)
  • Solving simple logic problems
  • Practicing basic math
  • Doing crossword puzzles
  • Playing board games

The last stage in Piaget's theory of cognitive development occurs during the teenage years into adulthood. During this stage, a person learns abstract thinking and hypothetical problem-solving skills.

Deductive reasoning—or the ability to make a conclusion based on information gained from a person's environment—is also learned in this stage. This means, for example, that a person can identify the differences between dogs of various breeds, instead of putting them all in a general category of "dogs."

Activities to Try During the Formal Operational Stage

Appropriate activities to do during the formal operational stage include:

  • Learning to cook
  • Solving crossword and logic puzzles
  • Exploring hobbies
  • Playing a musical instrument

Piaget's theory of cognitive development is based on the belief that a child gains thinking skills in four stages: sensorimotor, preoperational, concrete operational, and formal operational. These stages roughly correspond to specific ages, from birth to adulthood. Children progress through these stages at different paces, but according to Piaget, they are always completed in order.

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Oklahoma State University. Cognitive development: The theory of Jean Piaget .

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Börnert-Ringleb M, Wilbert J. The association of strategy use and concrete-operational thinking in primary school . Front Educ. 2018;0. doi:10.3389/feduc.2018.00038

By Aubrey Bailey, PT, DPT, CHT Dr, Bailey is a Virginia-based physical therapist and professor of anatomy and physiology with over a decade of experience.

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Ch 3: Lifespan Development

A picture shows two intertwined hands. One is the large hand of an adult, and the other is the tiny hand of an infant. The infant’s entire hand grasp is about the size of a single adult finger.

Welcome to the story of your life. In this chapter, we will explore the fascinating tale of how you have grown and developed into the person you are today. We will also look at some ideas about who you will grow into tomorrow. Yours is a story of lifespan development (Figure 1), from the start of life to the end.

The process of human growth and development is more obvious in infancy and childhood, yet your development is happening this moment and will continue, minute by minute, for the rest of your life. Who you are today and who you will be in the future depends on a blend of genetics, environment, culture, relationships, and more, as you continue through each phase of life. You have experienced firsthand much of what is discussed in this chapter. Now consider what psychological science has to say about your physical, cognitive, and psychosocial development, from the womb to the tomb.

Theories of Development

decorative image

There are many theories regarding how babies and children grow and develop into happy, healthy adults. Sigmund Freud suggested that we pass through a series of psychosexual stages in which our energy is focused on certain erogenous zones on the body. Eric Erikson modified Freud’s ideas and suggested a theory of psychosocial development. Erikson said that our social interactions and successful completion of social tasks shape our sense of self. Jean Piaget proposed a theory of cognitive development that explains how children think and reason as they move through various stages. Finally, Lawrence Kohlberg turned his attention to moral development. He said that we pass through three levels of moral thinking that build on our cognitive development. You’ll learn about each of these theories in this section.

Learning Objectives

  • Describe the three major issues in development: continuity and discontinuity, one common course of development or many unique courses of development, and nature versus nurture

What Is Lifespan Development?

My heart leaps up when I behold A rainbow in the sky: So was it when my life began; So is it now I am a man; So be it when I shall grow old, Or let me die! The Child is father of the Man; And I could wish my days to be Bound each to each by natural piety. (Wordsworth, 1802)

In this poem, William Wordsworth writes, “the child is father of the man.” What does this seemingly incongruous statement mean, and what does it have to do with lifespan development? Wordsworth might be suggesting that the person he is as an adult depends largely on the experiences he had in childhood. Consider the following questions: To what extent is the adult you are today influenced by the child you once were? To what extent is a child fundamentally different from the adult he grows up to be?

These are the types of questions developmental psychologists try to answer, by studying how humans change and grow from conception through childhood, adolescence, adulthood, and death. They view development as a lifelong process that can be studied scientifically across three developmental domains—physical, cognitive, and psychosocial development. Physical development involves growth and changes in the body and brain, the senses, motor skills, and health and wellness. Cognitive development involves learning, attention, memory, language, thinking, reasoning, and creativity. Psychosocial development involves emotions, personality, and social relationships. We refer to these domains throughout the module.

Connect the Concepts: Research Methods in Developmental Psychology

You’ve learned about a variety of research methods used by psychologists. Developmental psychologists use many of these approaches in order to better understand how individuals change mentally and physically over time. These methods include naturalistic observations, case studies, surveys, and experiments, among others.

Naturalistic observations involve observing behavior in its natural context. A developmental psychologist might observe how children behave on a playground, at a daycare center, or in the child’s own home. While this research approach provides a glimpse into how children behave in their natural settings, researchers have very little control over the types and/or frequencies of displayed behavior.

In a case study, developmental psychologists collect a great deal of information from one individual in order to better understand physical and psychological changes over the lifespan. This particular approach is an excellent way to better understand individuals, who are exceptional in some way, but it is especially prone to researcher bias in interpretation, and it is difficult to generalize conclusions to the larger population.

In one classic example of this research method being applied to a study of lifespan development Sigmund Freud analyzed the development of a child known as “Little Hans” (Freud, 1909/1949). Freud’s findings helped inform his theories of psychosexual development in children, which you will learn about later in this module. Little Genie, the subject of a case study discussed in the module on thinking and intelligence, provides another example of how psychologists examine developmental milestones through detailed research on a single individual. In Genie’s case, her neglectful and abusive upbringing led to her being unable to speak until, at age 13, she was removed from that harmful environment. As she learned to use language, psychologists were able to compare how her language acquisition abilities differed when occurring in her late-stage development compared to the typical acquisition of those skills during the ages of infancy through early childhood (Fromkin, Krashen, Curtiss, Rigler, & Rigler, 1974; Curtiss, 1981).

The survey method asks individuals to self-report important information about their thoughts, experiences, and beliefs. This particular method can provide large amounts of information in relatively short amounts of time; however, validity of data collected in this way relies on honest self-reporting, and the data is relatively shallow when compared to the depth of information collected in a case study.

Experiments involve significant control over extraneous variables and manipulation of the independent variable. As such, experimental research allows developmental psychologists to make causal statements about certain variables that are important for the developmental process. Because experimental research must occur in a controlled environment, researchers must be cautious about whether behaviors observed in the laboratory translate to an individual’s natural environment.

Later in this chapter, you will learn about several experiments in which toddlers and young children observe scenes or actions so that researchers can determine at what age specific cognitive abilities develop. For example, children may observe a quantity of liquid poured from a short, fat glass into a tall, skinny glass. As the experimenters question the children about what occurred, the subjects’ answers help psychologists understand at what age a child begins to comprehend that the volume of liquid remained the same although the shapes of the containers differs.

Across these three domains—physical, cognitive, and psychosocial—the normative approach to development is also discussed. This approach asks, “What is normal development?” In the early decades of the 20th century, normative psychologists studied large numbers of children at various ages to determine norms (i.e., average ages) of when most children reach specific developmental milestones in each of the three domains (Gesell, 1933, 1939, 1940; Gesell & Ilg, 1946; Hall, 1904). Although children develop at slightly different rates, we can use these age-related averages as general guidelines to compare children with same-age peers to determine the approximate ages they should reach specific normative events called developmental milestones  (e.g., crawling, walking, writing, dressing, naming colors, speaking in sentences, and starting puberty).

Not all normative events are universal, meaning they are not experienced by all individuals across all cultures. Biological milestones, such as puberty, tend to be universal, but social milestones, such as the age when children begin formal schooling, are not necessarily universal; instead, they affect most individuals in a particular culture (Gesell & Ilg, 1946). For example, in developed countries children begin school around 5 or 6 years old, but in developing countries, like Nigeria, children often enter school at an advanced age, if at all (Huebler, 2005; United Nations Educational, Scientific, and Cultural Organization [UNESCO], 2013).

To better understand the normative approach, imagine two new mothers, Louisa and Kimberly, who are close friends and have children around the same age. Louisa’s daughter is 14 months old, and Kimberly’s son is 12 months old. According to the normative approach, the average age a child starts to walk is 12 months. However, at 14 months Louisa’s daughter still isn’t walking. She tells Kimberly she is worried that something might be wrong with her baby. Kimberly is surprised because her son started walking when he was only 10 months old. Should Louisa be worried? Should she be concerned if her daughter is not walking by 15 months or 18 months?

Link to Learning

Issues in developmental psychology, is development continuous or discontinuous.

Continuous development views development as a cumulative process, gradually improving on existing skills (Figure 2). With this type of development, there is gradual change. Consider, for example, a child’s physical growth: adding inches to her height year by year. In contrast, theorists who view development as discontinuous  believe that development takes place in unique stages: It occurs at specific times or ages. With this type of development, the change is more sudden, such as an infant’s ability to conceive object permanence.

Continuous and Discontinuous development are shown side by side using two separate pictures. The first picture is a triangle labeled “Continuous Development” which slopes upward from Infancy to Adulthood in a straight line. The second picture is 4 bars side by side labeled “Discontinuous Development” which get higher from Infancy to Adulthood. These bars resemble a staircase.

Is There One Course of Development or Many?

Is development essentially the same, or universal, for all children (i.e., there is one course of development) or does development follow a different course for each child, depending on the child’s specific genetics and environment (i.e., there are many courses of development)? Do people across the world share more similarities or more differences in their development? How much do culture and genetics influence a child’s behavior?

Stage theories hold that the sequence of development is universal. For example, in cross-cultural studies of language development, children from around the world reach language milestones in a similar sequence (Gleitman & Newport, 1995). Infants in all cultures coo before they babble. They begin babbling at about the same age and utter their first word around 12 months old. Yet we live in diverse contexts that have a unique effect on each of us. For example, researchers once believed that motor development follows one course for all children regardless of culture. However, child care practices vary by culture, and different practices have been found to accelerate or inhibit achievement of developmental milestones such as sitting, crawling, and walking (Karasik, Adolph, Tamis-LeMonda, & Bornstein, 2010).

For instance, let’s look at the Aché society in Paraguay. They spend a significant amount of time foraging in forests. While foraging, Aché mothers carry their young children, rarely putting them down in order to protect them from getting hurt in the forest. Consequently, their children walk much later: They walk around 23–25 months old, in comparison to infants in Western cultures who begin to walk around 12 months old. However, as Aché children become older, they are allowed more freedom to move about, and by about age 9, their motor skills surpass those of U.S. children of the same age: Aché children are able to climb trees up to 25 feet tall and use machetes to chop their way through the forest (Kaplan & Dove, 1987). As you can see, our development is influenced by multiple contexts, so the timing of basic motor functions may vary across cultures. However, the functions themselves are present in all societies (Figure 3).

Photograph A shows two children wearing inner tubes playing in the shallow water at the beach. Photograph B shows two children playing in the sand at a beach.

How Do Nature and Nurture Influence Development?

Are we who we are because of nature (biology and genetics), or are we who we are because of nurture (our environment and culture)? This longstanding question is known in psychology as the nature versus nurture debate. It seeks to understand how our personalities and traits are the product of our genetic makeup and biological factors, and how they are shaped by our environment, including our parents, peers, and culture. For instance, why do biological children sometimes act like their parents—is it because of genetics or because of early childhood environment and what the child has learned from the parents? What about children who are adopted—are they more like their biological families or more like their adoptive families? And how can siblings from the same family be so different?

We are all born with specific genetic traits inherited from our parents, such as eye color, height, and certain personality traits. Beyond our basic genotype, however, there is a deep interaction between our genes and our environment: Our unique experiences in our environment influence whether and how particular traits are expressed, and at the same time, our genes influence how we interact with our environment (Diamond, 2009; Lobo, 2008). This module will show that there is a reciprocal interaction between nature and nurture as they both shape who we become, but the debate continues as to the relative contributions of each.

Dig Deeper: The Achievement Gap: How Does Socioeconomic Status Affect Development?

The achievement gap refers to the persistent difference in grades, test scores, and graduation rates that exist among students of different ethnicities, races, and—in certain subjects—sexes (Winerman, 2011). Research suggests that these achievement gaps are strongly influenced by differences in socioeconomic factors that exist among the families of these children. While the researchers acknowledge that programs aimed at reducing such socioeconomic discrepancies would likely aid in equalizing the aptitude and performance of children from different backgrounds, they recognize that such large-scale interventions would be difficult to achieve. Therefore, it is recommended that programs aimed at fostering aptitude and achievement among disadvantaged children may be the best option for dealing with issues related to academic achievement gaps (Duncan & Magnuson, 2005).

Low-income children perform significantly more poorly than their middle- and high-income peers on a number of educational variables: They have significantly lower standardized test scores, graduation rates, and college entrance rates, and they have much higher school dropout rates. There have been attempts to correct the achievement gap through state and federal legislation, but what if the problems start before the children even enter school?

Psychologists Betty Hart and Todd Risley (2006) spent their careers looking at early language ability and progression of children in various income levels. In one longitudinal study, they found that although all the parents in the study engaged and interacted with their children, middle- and high-income parents interacted with their children differently than low-income parents. After analyzing 1,300 hours of parent-child interactions, the researchers found that middle- and high-income parents talk to their children significantly more, starting when the children are infants. By 3 years old, high-income children knew almost double the number of words known by their low-income counterparts, and they had heard an estimated total of 30 million more words than the low-income counterparts (Hart & Risley, 2003). And the gaps only become more pronounced. Before entering kindergarten, high-income children score 60% higher on achievement tests than their low-income peers (Lee & Burkam, 2002).

There are solutions to this problem. At the University of Chicago, experts are working with low-income families, visiting them at their homes, and encouraging them to speak more to their children on a daily and hourly basis. Other experts are designing preschools in which students from diverse economic backgrounds are placed in the same classroom. In this research, low-income children made significant gains in their language development, likely as a result of attending the specialized preschool (Schechter & Byeb, 2007). What other methods or interventions could be used to decrease the achievement gap? What types of activities could be implemented to help the children of your community or a neighboring community?

Think It Over

  • How are you different today from the person you were at 6 years old? What about at 16 years old? How are you the same as the person you were at those ages?
  • Your 3-year-old daughter is not yet potty trained. Based on what you know about the normative approach, should you be concerned? Why or why not?

Lifespan Theories

  • Define Freud’s theory of psychosexual development
  • Describe the major tasks of child and adult psychosocial development according to Erikson
  • Discuss Piaget’s view of cognitive development and apply the stages to understanding childhood cognition
  • Describe Kohlberg’s theory of moral development
  • Compare and contrast the strengths and weaknesses of major developmental theories

Psychosexual Theory of Development

Sigmund Freud (1856–1939) believed that personality develops during early childhood. For Freud, childhood experiences shape our personalities and behavior as adults. Freud viewed development as discontinuous; he believed that each of us must pass through a serious of stages during childhood, and that if we lack proper nurturance and parenting during a stage, we may become stuck, or fixated, in that stage. Freud’s stages are called the stages of psychosexual development . According to Freud, children’s pleasure-seeking urges are focused on a different area of the body, called an erogenous zone, at each of the five stages of development: oral, anal, phallic, latency, and genital.

While most of Freud’s ideas have not found support in modern research, we cannot discount the contributions that Freud has made to the field of psychology. Psychologists today dispute Freud’s psychosexual stages as a legitimate explanation for how one’s personality develops, but what we can take away from Freud’s theory is that personality is shaped, in some part, by experiences we have in childhood. These stages are discussed in detail in the personality chapter in OpenStax .

Psychosocial Theory of Development

Erik Erikson (1902–1994) (Figure 4), another stage theorist, took Freud’s theory and modified it as psychosocial theory. Erikson’s psychosocial development  emphasizes the social nature of our development rather than its sexual nature. While Freud believed that personality is shaped only in childhood, Erikson proposed that personality development takes place all through the lifespan. Erikson suggested that how we interact with others is what affects our sense of self, or what he called the ego identity.

A photograph depicts Erik Erikson in his later years.

Erikson proposed that we are motivated by a need to achieve competence in certain areas of our lives. According to psychosocial theory, we experience eight stages of development over our lifespan, from infancy through late adulthood. At each stage there is a conflict, or task, that we need to resolve. Successful completion of each developmental task results in a sense of competence and a healthy personality. Failure to master these tasks leads to feelings of inadequacy.

According to Erikson (1963), trust is the basis of our development during infancy (birth to 12 months). Therefore, the primary task of this stage is trust versus mistrust. Infants are dependent upon their caregivers, so caregivers who are responsive and sensitive to their infant’s needs help their baby to develop a sense of trust; their baby will see the world as a safe, predictable place. Unresponsive caregivers who do not meet their baby’s needs can engender feelings of anxiety, fear, and mistrust; their baby may see the world as unpredictable.

As toddlers (ages 1–3 years) begin to explore their world, they learn that they can control their actions and act on the environment to get results. They begin to show clear preferences for certain elements of the environment, such as food, toys, and clothing. A toddler’s main task is to resolve the issue of autonomy versus shame and doubt, by working to establish independence. This is the “me do it” stage. For example, we might observe a budding sense of autonomy in a 2-year-old child who wants to choose her clothes and dress herself. Although her outfits might not be appropriate for the situation, her input in such basic decisions has an effect on her sense of independence. If denied the opportunity to act on her environment, she may begin to doubt her abilities, which could lead to low self-esteem and feelings of shame.

Once children reach the preschool stage (ages 3–6 years), they are capable of initiating activities and asserting control over their world through social interactions and play. According to Erikson, preschool children must resolve the task of initiative versus guilt. By learning to plan and achieve goals while interacting with others, preschool children can master this task. Those who do will develop self-confidence and feel a sense of purpose. Those who are unsuccessful at this stage—with their initiative misfiring or stifled—may develop feelings of guilt. How might over-controlling parents stifle a child’s initiative?

During the elementary school stage (ages 6–12), children face the task of industry versus inferiority. Children begin to compare themselves to their peers to see how they measure up. They either develop a sense of pride and accomplishment in their schoolwork, sports, social activities, and family life, or they feel inferior and inadequate when they don’t measure up. What are some things parents and teachers can do to help children develop a sense of competence and a belief in themselves and their abilities?

In adolescence (ages 12–18), children face the task of identity versus role confusion. According to Erikson, an adolescent’s main task is developing a sense of self. Adolescents struggle with questions such as “Who am I?” and “What do I want to do with my life?” Along the way, most adolescents try on many different selves to see which ones fit. Adolescents who are successful at this stage have a strong sense of identity and are able to remain true to their beliefs and values in the face of problems and other people’s perspectives. What happens to apathetic adolescents, who do not make a conscious search for identity, or those who are pressured to conform to their parents’ ideas for the future? These teens will have a weak sense of self and experience role confusion. They are unsure of their identity and confused about the future.

People in early adulthood (i.e., 20s through early 40s) are concerned with intimacy versus isolation. After we have developed a sense of self in adolescence, we are ready to share our life with others. Erikson said that we must have a strong sense of self before developing intimate relationships with others. Adults who do not develop a positive self-concept in adolescence may experience feelings of loneliness and emotional isolation.

When people reach their 40s, they enter the time known as middle adulthood, which extends to the mid-60s. The social task of middle adulthood is generativity versus stagnation. Generativity involves finding your life’s work and contributing to the development of others, through activities such as volunteering, mentoring, and raising children. Those who do not master this task may experience stagnation, having little connection with others and little interest in productivity and self-improvement.

From the mid-60s to the end of life, we are in the period of development known as late adulthood. Erikson’s task at this stage is called integrity versus despair. He said that people in late adulthood reflect on their lives and feel either a sense of satisfaction or a sense of failure. People who feel proud of their accomplishments feel a sense of integrity, and they can look back on their lives with few regrets. However, people who are not successful at this stage may feel as if their life has been wasted. They focus on what “would have,” “should have,” and “could have” been. They face the end of their lives with feelings of bitterness, depression, and despair. Table 1 summarizes the stages of Erikson’s theory.

Cognitive Theory of Development

Jean Piaget (1896–1980) is another stage theorist who studied childhood development (Figure 5). Instead of approaching development from a psychoanalytical or psychosocial perspective, Piaget focused on children’s cognitive growth. He believed that thinking is a central aspect of development and that children are naturally inquisitive. However, he said that children do not think and reason like adults (Piaget, 1930, 1932). His theory of cognitive development holds that our cognitive abilities develop through specific stages, which exemplifies the discontinuity approach to development. As we progress to a new stage, there is a distinct shift in how we think and reason.

A photograph depicts Jean Piaget in his later years.

Piaget said that children develop schemata, sometimes called schemas, to help them understand the world. Schemata  are concepts (mental models) that are used to help us categorize and interpret information. By the time children have reached adulthood, they have created schemata for almost everything. When children learn new information, they adjust their schemata through two processes: assimilation and accommodation. First, they assimilate new information or experiences in terms of their current schemata: assimilation is when they take in information that is comparable to what they already know. Accommodation  describes when they change their schemata based on new information. This process continues as children interact with their environment.

For example, 2-year-old Blake learned the schema for dogs because his family has a Labrador retriever. When Blake sees other dogs in his picture books, he says, “Look mommy, dog!” Thus, he has assimilated them into his schema for dogs. One day, Blake sees a sheep for the first time and says, “Look mommy, dog!” Having a basic schema that a dog is an animal with four legs and fur, Blake thinks all furry, four-legged creatures are dogs. When Blake’s mom tells him that the animal he sees is a sheep, not a dog, Blake must accommodate his schema for dogs to include more information based on his new experiences. Blake’s schema for dog was too broad, since not all furry, four-legged creatures are dogs. He now modifies his schema for dogs and forms a new one for sheep.

Like Freud and Erikson, Piaget thought development unfolds in a series of stages approximately associated with age ranges. He proposed a theory of cognitive development that unfolds in four stages: sensorimotor, preoperational, concrete operational, and formal operational.

The first stage is the sensorimotor stage, which lasts from birth to about 2 years old. During this stage, children learn about the world through their senses and motor behavior. Young children put objects in their mouths to see if the items are edible, and once they can grasp objects, they may shake or bang them to see if they make sounds. Between 5 and 8 months old, the child develops object permanence , which is the understanding that even if something is out of sight, it still exists (Bogartz, Shinskey, & Schilling, 2000). According to Piaget, young infants do not remember an object after it has been removed from sight. Piaget studied infants’ reactions when a toy was first shown to an infant and then hidden under a blanket. Infants who had already developed object permanence would reach for the hidden toy, indicating that they knew it still existed, whereas infants who had not developed object permanence would appear confused.

Please take a few minutes to view this brief video demonstrating different children’s ability to understand object permanence:

You can view the transcript for “Piaget – Stage 1 – Sensorimotor Stage : Object Permanence” here (opens in new window) .

In Piaget’s view, around the same time children develop object permanence, they also begin to exhibit stranger anxiety, which is a fear of unfamiliar people. Babies may demonstrate this by crying and turning away from a stranger, by clinging to a caregiver, or by attempting to reach their arms toward familiar faces such as parents. Stranger anxiety results when a child is unable to assimilate the stranger into an existing schema; therefore, she can’t predict what her experience with that stranger will be like, which results in a fear response.

Piaget’s second stage is the preoperational stage , which is from approximately 2 to 7 years old. In this stage, children can use symbols to represent words, images, and ideas, which is why children in this stage engage in pretend play. A child’s arms might become airplane wings as he zooms around the room, or a child with a stick might become a brave knight with a sword. Children also begin to use language in the preoperational stage, but they cannot understand adult logic or mentally manipulate information (the term operational refers to logical manipulation of information, so children at this stage are considered to be pre -operational). Children’s logic is based on their own personal knowledge of the world so far, rather than on conventional knowledge. For example, dad gave a slice of pizza to 10-year-old Keiko and another slice to her 3-year-old brother, Kenny. Kenny’s pizza slice was cut into five pieces, so Kenny told his sister that he got more pizza than she did. Children in this stage cannot perform mental operations because they have not developed an understanding of conservation , which is the idea that even if you change the appearance of something, it is still equal in size as long as nothing has been removed or added.

This video shows a 4.5-year-old boy in the preoperational stage as he responds to Piaget’s conservation tasks.

You can view the transcript for “A typical child on Piaget’s conservation tasks” here (opens in new window) .

During this stage, we also expect children to display egocentrism , which means that the child is not able to take the perspective of others. A child at this stage thinks that everyone sees, thinks, and feels just as they do. Let’s look at Kenny and Keiko again. Keiko’s birthday is coming up, so their mom takes Kenny to the toy store to choose a present for his sister. He selects an Iron Man action figure for her, thinking that if he likes the toy, his sister will too. An egocentric child is not able to infer the perspective of other people and instead attributes his own perspective. At some point during this stage and typically between 3 and 5 years old, children come to understand that people have thoughts, feelings, and beliefs that are different from their own. This is known as theory-of-mind  (TOM).

Piaget developed the Three-Mountain Task to determine the level of egocentrism displayed by children. Children view a 3-dimensional mountain scene from one viewpoint, and are asked what another person at a different viewpoint would see in the same scene. Watch the Three-Mountain Task in action in this short video from the University of Minnesota and the Science Museum of Minnesota.

You can view the transcript for “Piaget’s Mountains Task” here (opens in new window) .

Piaget’s third stage is the concrete operational stage , which occurs from about 7 to 11 years old. In this stage, children can think logically about real (concrete) events; they have a firm grasp on the use of numbers and start to employ memory strategies. They can perform mathematical operations and understand transformations, such as addition is the opposite of subtraction, and multiplication is the opposite of division. In this stage, children also master the concept of conservation: Even if something changes shape, its mass, volume, and number stay the same. For example, if you pour water from a tall, thin glass to a short, fat glass, you still have the same amount of water. Remember Keiko and Kenny and the pizza? How did Keiko know that Kenny was wrong when he said that he had more pizza?

Children in the concrete operational stage also understand the principle of reversibility , which means that objects can be changed and then returned back to their original form or condition. Take, for example, water that you poured into the short, fat glass: You can pour water from the fat glass back to the thin glass and still have the same amount (minus a couple of drops).

The fourth, and last, stage in Piaget’s theory is the formal operational stage , which is from about age 11 to adulthood. Whereas children in the concrete operational stage are able to think logically only about concrete events, children in the formal operational stage can also deal with abstract ideas and hypothetical situations. Children in this stage can use abstract thinking to problem solve, look at alternative solutions, and test these solutions. In adolescence, a renewed egocentrism occurs. For example, a 15-year-old with a very small pimple on her face might think it is huge and incredibly visible, under the mistaken impression that others must share her perceptions.

Beyond Formal Operational Thought

As with other major contributors of theories of development, several of Piaget’s ideas have come under criticism based on the results of further research. For example, several contemporary studies support a model of development that is more continuous than Piaget’s discrete stages (Courage & Howe, 2002; Siegler, 2005, 2006). Many others suggest that children reach cognitive milestones earlier than Piaget describes (Baillargeon, 2004; de Hevia & Spelke, 2010).

According to Piaget, the highest level of cognitive development is formal operational thought, which develops between 11 and 20 years old. However, many developmental psychologists disagree with Piaget, suggesting a fifth stage of cognitive development, known as the postformal stage (Basseches, 1984; Commons & Bresette, 2006; Sinnott, 1998). In postformal thinking, decisions are made based on situations and circumstances, and logic is integrated with emotion as adults develop principles that depend on contexts. One way that we can see the difference between an adult in postformal thought and an adolescent in formal operations is in terms of how they handle emotionally charged issues.

It seems that once we reach adulthood our problem solving abilities change: As we attempt to solve problems, we tend to think more deeply about many areas of our lives, such as relationships, work, and politics (Labouvie-Vief & Diehl, 1999). Because of this, postformal thinkers are able to draw on past experiences to help them solve new problems. Problem-solving strategies using postformal thought vary, depending on the situation. What does this mean? Adults can recognize, for example, that what seems to be an ideal solution to a problem at work involving a disagreement with a colleague may not be the best solution to a disagreement with a significant other.

Explain how you would use your understanding of one of the major developmental theories (psychosexual, psychosocial, or cognitive) to deal with each of the difficulties listed below:

  • Your infant daughter puts everything in her mouth, including the dog’s food.
  • Your eight-year-old son is failing math; all he cares about is baseball.
  • Your two-year-old daughter refuses to wear the clothes you pick for her every morning, which makes getting dressed a twenty-minute battle.
  • Your sixty-eight-year-old neighbor is chronically depressed and feels she has wasted her life.
  • Your 18-year-old daughter has decided not to go to college. Instead she’s moving to Colorado to become a ski instructor.
  • Your 11-year-old son is the class bully.

Theory of Moral Development

A major task beginning in childhood and continuing into adolescence is discerning right from wrong. Psychologist Lawrence Kohlberg (1927–1987) extended upon the foundation that Piaget built regarding cognitive development. Kohlberg believed that moral development, like cognitive development, follows a series of stages. To develop this theory, Kohlberg posed moral dilemmas to people of all ages, and then he analyzed their answers to find evidence of their particular stage of moral development. Before reading about the stages, take a minute to consider how you would answer one of Kohlberg’s best-known moral dilemmas, commonly known as the Heinz dilemma:

In Europe, a woman was near death from a special kind of cancer. There was one drug that the doctors thought might save her. It was a form of radium that a druggist in the same town had recently discovered. The drug was expensive to make, but the druggist was charging ten times what the drug cost him to make. He paid $200 for the radium and charged $2,000 for a small dose of the drug. The sick woman’s husband, Heinz, went to everyone he knew to borrow the money, but he could only get together about $1,000, which is half of what it cost. He told the druggist that his wife was dying and asked him to sell it cheaper or let him pay later. But the druggist said: “No, I discovered the drug and I’m going to make money from it.” So Heinz got desperate and broke into the man’s store to steal the drug for his wife. Should the husband have done that? (Kohlberg, 1969, p. 379)

How would you answer this dilemma? Kohlberg was not interested in whether you answer yes or no to the dilemma: Instead, he was interested in the reasoning behind your answer.

After presenting people with this and various other moral dilemmas, Kohlberg reviewed people’s responses and placed them in different [pb_glossary id="2815"]stages of moral reasoning (Figure 6). According to Kohlberg, an individual progresses from the capacity for pre-conventional morality (before age 9) to the capacity for conventional morality (early adolescence), and toward attaining post-conventional morality (once formal operational thought is attained), which only a few fully achieve. Kohlberg placed in the highest stage responses that reflected the reasoning that Heinz should steal the drug because his wife’s life is more important than the pharmacist making money. The value of a human life overrides the pharmacist’s greed.

Nine boxes are arranged in rows and columns of three. The top left box contains “Level 1, Pre-conventional Morality.” A line connects this box with another box to the right containing “Stage 1, Obedience and punishment: behavior driven by avoiding punishment.” To the right is another box connected by a line containing “Stage 2, Individual interest: behavior driven by self-interest and rewards.” The middle left box contains “Level 2, Conventional Morality.” A line connects this box with another box to the right containing “Stage 3, Interpersonal: behavior driven by social approval.” To the right is another box connected by a line containing “Stage 4, Authority: behavior driven by obeying authority and conforming to social order.” The lower left box contains “Level 3, Post-conventional Morality.” A line connects this box with another box to the right containing “Stage 5, Social contract: behavior driven by balance of social order and individual rights.” To the right is another box connected by a line containing “Stage 6, Universal ethics: behavior driven by internal moral principles.”

It is important to realize that even those people who have the most sophisticated, post-conventional reasons for some choices may make other choices for the simplest of pre-conventional reasons. Many psychologists agree with Kohlberg's theory of moral development but point out that moral reasoning is very different from moral behavior. Sometimes what we say we would do in a situation is not what we actually do in that situation. In other words, we might “talk the talk,” but not “walk the walk.”

How does this theory apply to males and females? Kohlberg (1969) felt that more males than females move past stage four in their moral development. He went on to note that women seem to be deficient in their moral reasoning abilities. These ideas were not well received by Carol Gilligan, a research assistant of Kohlberg, who consequently developed her own ideas of moral development. In her groundbreaking book, In a Different Voice: Psychological Theory and Women’s Development , Gilligan (1982) criticized her former mentor’s theory because it was based only on upper class white men and boys. She argued that women are not deficient in their moral reasoning—she proposed that males and females reason differently. Girls and women focus more on staying connected and the importance of interpersonal relationships. Therefore, in the Heinz dilemma, many girls and women respond that Heinz should not steal the medicine. Their reasoning is that if he steals the medicine, is arrested, and is put in jail, then he and his wife will be separated, and she could die while he is still in prison.

Development in Childhood

Think about the miraculous development that occurs during childhood in order for a tiny zygote to grow into a walking, talking, thinking child. Newborn infants only weigh about 7.5 pounds but their physical, cognitive, and psychosocial skills grow and change as they move through developmental stages. In this section, you'll learn about many of these changes.

  • Describe the stages of prenatal development and the significance of prenatal care
  • Define and differentiate between various infant reflexes
  • Explain the physical, cognitive, and emotional development that occurs from infancy through childhood

Prenatal Development

As discussed at the beginning of this chapter, developmental psychologists often divide our development into three areas: physical development, cognitive development, and psychosocial development. Mirroring Erikson’s stages, lifespan development is divided into different stages that are based on age. We will discuss prenatal, infant, child, adolescent, and adult development.

Germinal Stage (Weeks 1–2)

In the discussion of biopsychology earlier in the book, you learned about genetics and DNA. A mother and father’s DNA is passed on to the child at the moment of conception. Conception occurs when sperm fertilizes an egg and forms a zygote (Figure 7). A zygote begins as a one-cell structure that is created when a sperm and egg merge. The genetic makeup and sex of the baby are set at this point. During the first week after conception, the zygote divides and multiplies, going from a one-cell structure to two cells, then four cells, then eight cells, and so on. This process of cell division is called mitosis. Mitosis  is a fragile process, and fewer than one-half of all zygotes survive beyond the first two weeks (Hall, 2004). After 5 days of mitosis there are 100 cells, and after 9 months there are billions of cells. As the cells divide, they become more specialized, forming different organs and body parts. In the germinal stage, the mass of cells has yet to attach itself to the lining of the mother’s uterus. Once it does, the next stage begins.

A microscopic picture shows a single sperm fusing with the ovum.

Embryonic Stage (Weeks 3–8)

After the zygote divides for about 7–10 days and has 150 cells, it travels down the fallopian tubes and implants itself in the lining of the uterus. Upon implantation, this multi-cellular organism is called an embryo . Now blood vessels grow, forming the placenta. The placenta  is a structure connected to the uterus that provides nourishment and oxygen from the mother to the developing embryo via the umbilical cord. Basic structures of the embryo start to develop into areas that will become the head, chest, and abdomen. During the embryonic stage, the heart begins to beat and organs form and begin to function. The neural tube forms along the back of the embryo, developing into the spinal cord and brain.

Fetal Stage (Weeks 9–40)

When the organism is about nine weeks old, the embryo is called a fetus. At this stage, the fetus is about the size of a kidney bean and begins to take on the recognizable form of a human being as the “tail” begins to disappear.

From 9–12 weeks, the sex organs begin to differentiate. At about 16 weeks, the fetus is approximately 4.5 inches long. Fingers and toes are fully developed, and fingerprints are visible. By the time the fetus reaches the sixth month of development (24 weeks), it weighs up to 1.4 pounds. Hearing has developed, so the fetus can respond to sounds. The internal organs, such as the lungs, heart, stomach, and intestines, have formed enough that a fetus born prematurely at this point has a chance to survive outside of the mother’s womb. Throughout the fetal stage the brain continues to grow and develop, nearly doubling in size from weeks 16 to 28. Around 36 weeks, the fetus is almost ready for birth. It weighs about 6 pounds and is about 18.5 inches long, and by week 37 all of the fetus’s organ systems are developed enough that it could survive outside the mother’s uterus without many of the risks associated with premature birth. The fetus continues to gain weight and grow in length until approximately 40 weeks. By then, the fetus has very little room to move around and birth becomes imminent. The progression through the stages is shown in Figure 8.

The growth of a fetus is shown using nine pictures in different stages of development. For each stage, there is a picture of a fetus which gets progressively larger and more mature. The first stage is labeled “9 weeks; fetal stage begins.” The second stage is labeled “12 weeks; sex organs differentiate.” The third stage is labeled “16 weeks; fingers and toes develop.” The fourth stage is labeled “20 weeks; hearing begins.” The fifth stage is labeled “24 weeks; lungs begin to develop.” The sixth stage is labeled “28 weeks; brain grows rapidly.” The seventh stage is labeled “32 weeks; bones fully develop.” The eighth stage is labeled “36 weeks; muscles fully develop.” The ninth stage is labeled “40 weeks; full-term development.”

Prenatal Influences

During each prenatal stage, genetic and environmental factors can affect development. The developing fetus is completely dependent on the mother for life. It is important that the mother takes good care of herself and receives prenatal care , which is medical care during pregnancy that monitors the health of both the mother and the fetus. According to the National Institutes of Health ([NIH], 2013), routine prenatal care is important because it can reduce the risk of complications to the mother and fetus during pregnancy. In fact, women who are trying to become pregnant or who may become pregnant should discuss pregnancy planning with their doctor. They may be advised, for example, to take a vitamin containing folic acid, which helps prevent certain birth defects, or to monitor aspects of their diet or exercise routines.

A pregnant woman is lying on a table being examined by a doctor. The doctor's hands are on her belly.

Recall that when the zygote attaches to the wall of the mother’s uterus, the placenta is formed. The placenta provides nourishment and oxygen to the fetus. Most everything the mother ingests, including food, liquid, and even medication, travels through the placenta to the fetus, hence the common phrase “eating for two.” Anything the mother is exposed to in the environment affects the fetus; if the mother is exposed to something harmful, the child can show life-long effects.

A teratogen is any environmental agent—biological, chemical, or physical—that causes damage to the developing embryo or fetus. There are different types of teratogens. Alcohol and most drugs cross the placenta and affect the fetus. Alcohol is not safe to drink in any amount during pregnancy. Alcohol use during pregnancy has been found to be the leading preventable cause of mental retardation in children in the United States (Maier & West, 2001). Excessive maternal drinking while pregnant can cause fetal alcohol spectrum disorders with life-long consequences for the child ranging in severity from minor to major (Table 3). Fetal alcohol spectrum disorders (FASD) are a collection of birth defects associated with heavy consumption of alcohol during pregnancy. Physically, children with FASD may have a small head size and abnormal facial features. Cognitively, these children may have poor judgment, poor impulse control, higher rates of ADHD, learning issues, and lower IQ scores. These developmental problems and delays persist into adulthood (Streissguth et al., 2004). Based on studies conducted on animals, it also has been suggested that a mother’s alcohol consumption during pregnancy may predispose her child to like alcohol (Youngentob et al., 2007).

Smoking is also considered a teratogen because nicotine travels through the placenta to the fetus. When the mother smokes, the developing baby experiences a reduction in blood oxygen levels. According to the Centers for Disease Control and Prevention (2013), smoking while pregnant can result in premature birth, low-birth-weight infants, stillbirth, and sudden infant death syndrome (SIDS).

Heroin, cocaine, methamphetamine, almost all prescription medicines, and most over-the counter medications are also considered teratogens. Babies born with a heroin addiction need heroin just like an adult addict. The child will need to be gradually weaned from the heroin under medical supervision; otherwise, the child could have seizures and die. Other teratogens include radiation, viruses such as HIV and herpes, and rubella (German measles). Women in the United States are much less likely to be afflicted with rubella because most women received childhood immunizations or vaccinations that protect the body from disease.

Each organ of the fetus develops during a specific period in the pregnancy, called the critical or sensitive period (Figure 9). For example, research with primate models of FASD has demonstrated that the time during which a developing fetus is exposed to alcohol can dramatically affect the appearance of facial characteristics associated with fetal alcohol syndrome. Specifically, this research suggests that alcohol exposure that is limited to day 19 or 20 of gestation can lead to significant facial abnormalities in the offspring (Ashley, Magnuson, Omnell, & Clarren, 1999). Given regions of the brain also show sensitive periods during which they are most susceptible to the teratogenic effects of alcohol (Tran & Kelly, 2003).

Dig Deeper:  Should Women Who Use Drugs During Pregnancy Be Arrested and Jailed?

As you now know, women who use drugs or alcohol during pregnancy can cause serious lifelong harm to their child. Some people have advocated mandatory screenings for women who are pregnant and have a history of drug abuse, and if the women continue using, to arrest, prosecute, and incarcerate them (Figdor & Kaeser, 1998). This policy was tried in Charleston, South Carolina, as recently as 20 years ago. The policy was called the Interagency Policy on Management of Substance Abuse During Pregnancy, and had disastrous results.

The Interagency Policy applied to patients attending the obstetrics clinic at MUSC, which primarily serves patients who are indigent or on Medicaid. It did not apply to private obstetrical patients. The policy required patient education about the harmful effects of substance abuse during pregnancy. . . . [A] statement also warned patients that protection of unborn and newborn children from the harms of illegal drug abuse could involve the Charleston police, the Solicitor of the Ninth Judicial Court, and the Protective Services Division of the Department of Social Services (DSS). (Jos, Marshall, & Perlmutter, 1995, pp. 120–121)

This policy seemed to deter women from seeking prenatal care, deterred them from seeking other social services, and was applied solely to low-income women, resulting in lawsuits. The program was canceled after 5 years, during which 42 women were arrested. A federal agency later determined that the program involved human experimentation without the approval and oversight of an institutional review board (IRB). What were the flaws in the program and how would you correct them? What are the ethical implications of charging pregnant women with child abuse?

Infancy through Childhood

The average newborn weighs approximately 7.5 pounds. Although small, a newborn is not completely helpless because his reflexes and sensory capacities help him interact with the environment from the moment of birth. All healthy babies are born with newborn reflexes : inborn automatic responses to particular forms of stimulation. Reflexes help the newborn survive until it is capable of more complex behaviors—these reflexes are crucial to survival. They are present in babies whose brains are developing normally and usually disappear around 4–5 months old. Let’s take a look at some of these newborn reflexes. The rooting reflex is the newborn’s response to anything that touches her cheek: When you stroke a baby’s cheek, she naturally turns her head in that direction and begins to suck. The sucking reflex is the automatic, unlearned, sucking motions that infants do with their mouths. Several other interesting newborn reflexes can be observed. For instance, if you put your finger into a newborn’s hand, you will witness the grasping reflex , in which a baby automatically grasps anything that touches his palms. The Moro reflex is the newborn’s response when she feels like she is falling. The baby spreads her arms, pulls them back in, and then (usually) cries. How do you think these reflexes promote survival in the first months of life?

Take a few minutes to view this brief video clip illustrating several newborn reflexes .

If you are interested in learning more about human development in babies, watch  this TED talk by Alison Gopnik . Recent discoveries reveal that babies are probably smarter than we think.

What can young infants see, hear, and smell? Newborn infants’ sensory abilities are significant, but their senses are not yet fully developed. Many of a newborn’s innate preferences facilitate interaction with caregivers and other humans. Although vision is their least developed sense, newborns already show a preference for faces. Babies who are just a few days old also prefer human voices, they will listen to voices longer than sounds that do not involve speech (Vouloumanos & Werker, 2004), and they seem to prefer their mother’s voice over a stranger’s voice (Mills & Melhuish, 1974). In an interesting experiment, 3-week-old babies were given pacifiers that played a recording of the infant’s mother’s voice and of a stranger’s voice. When the infants heard their mother’s voice, they sucked more strongly at the pacifier (Mills & Melhuish, 1974). Newborns also have a strong sense of smell. For instance, newborn babies can distinguish the smell of their own mother from that of others. In a study by MacFarlane (1978), 1-week-old babies who were being breastfed were placed between two gauze pads. One gauze pad was from the bra of a nursing mother who was a stranger, and the other gauze pad was from the bra of the infant’s own mother. More than two-thirds of the week-old babies turned toward the gauze pad with their mother’s scent.

Physical Development

In infancy, toddlerhood, and early childhood, the body’s physical development is rapid (Figure 10). On average, newborns weigh between 5 and 10 pounds, and a newborn’s weight typically doubles in six months and triples in one year. By 2 years old the weight will have quadrupled, so we can expect that a 2 year old should weigh between 20 and 40 pounds. The average length of a newborn is 19.5 inches, increasing to 29.5 inches by 12 months and 34.4 inches by 2 years old (WHO Multicentre Growth Reference Study Group, 2006).

A collage of four photographs depicting babies is shown. From left to right they get progressively older. The far left photograph is a bundled up sleeping newborn. To the right is a picture of a toddler next to a toy giraffe. To the right is a baby blowing out a single candle. To the far right is a child on a swing set.

During infancy and childhood, growth does not occur at a steady rate (Carel, Lahlou, Roger, & Chaussain, 2004). Growth slows between 4 and 6 years old: During this time children gain 5–7 pounds and grow about 2–3 inches per year. Once girls reach 8–9 years old, their growth rate outpaces that of boys due to a pubertal growth spurt. This growth spurt continues until around 12 years old, coinciding with the start of the menstrual cycle. By 10 years old, the average girl weighs 88 pounds, and the average boy weighs 85 pounds.

We are born with all of the brain cells that we will ever have—about 100–200 billion neurons (nerve cells) whose function is to store and transmit information (Huttenlocher & Dabholkar, 1997). However, the nervous system continues to grow and develop. Each neural pathway forms thousands of new connections during infancy and toddlerhood. This period of rapid neural growth is called blooming. Neural pathways continue to develop through puberty. The blooming period of neural growth is then followed by a period of pruning, where neural connections are reduced. It is thought that pruning causes the brain to function more efficiently, allowing for mastery of more complex skills (Hutchinson, 2011). Blooming occurs during the first few years of life, and pruning continues through childhood and into adolescence in various areas of the brain.

The size of our brains increases rapidly. For example, the brain of a 2-year-old is 55% of its adult size, and by 6 years old the brain is about 90% of its adult size (Tanner, 1978). During early childhood (ages 3–6), the frontal lobes grow rapidly. Recalling our discussion of the 4 lobes of the brain earlier in this book, the frontal lobes are associated with planning, reasoning, memory, and impulse control. Therefore, by the time children reach school age, they are developmentally capable of controlling their attention and behavior. Through the elementary school years, the frontal, temporal, occipital, and parietal lobes all grow in size. The brain growth spurts experienced in childhood tend to follow Piaget’s sequence of cognitive development, so that significant changes in neural functioning account for cognitive advances (Kolb & Whishaw, 2009; Overman, Bachevalier, Turner, & Peuster, 1992).

Motor development occurs in an orderly sequence as infants move from reflexive reactions (e.g., sucking and rooting) to more advanced motor functioning. For instance, babies first learn to hold their heads up, then to sit with assistance, and then to sit unassisted, followed later by crawling and then walking.

Motor skills refer to our ability to move our bodies and manipulate objects. Fine motor skills focus on the muscles in our fingers, toes, and eyes, and enable coordination of small actions (e.g., grasping a toy, writing with a pencil, and using a spoon). Gross motor skills focus on large muscle groups that control our arms and legs and involve larger movements (e.g., balancing, running, and jumping).

As motor skills develop, there are certain developmental milestones that young children should achieve (Table 4). For each milestone there is an average age, as well as a range of ages in which the milestone should be reached. An example of a developmental milestone is sitting. On average, most babies sit alone at 7 months old. Sitting involves both coordination and muscle strength, and 90% of babies achieve this milestone between 5 and 9 months old. In another example, babies on average are able to hold up their head at 6 weeks old, and 90% of babies achieve this between 3 weeks and 4 months old. If a baby is not holding up his head by 4 months old, he is showing a delay. If the child is displaying delays on several milestones, that is reason for concern, and the parent or caregiver should discuss this with the child’s pediatrician. Some developmental delays can be identified and addressed through early intervention.

Cognitive Development

In addition to rapid physical growth, young children also exhibit significant development of their cognitive abilities. Piaget thought that children’s ability to understand objects—such as learning that a rattle makes a noise when shaken—was a cognitive skill that develops slowly as a child matures and interacts with the environment. Today, developmental psychologists think Piaget was incorrect. Researchers have found that even very young children understand objects and how they work long before they have experience with those objects (Baillargeon, 1987; Baillargeon, Li, Gertner, & Wu, 2011). For example, children as young as 3 months old demonstrated knowledge of the properties of objects that they had only viewed and did not have prior experience with them. In one study, 3-month-old infants were shown a truck rolling down a track and behind a screen. The box, which appeared solid but was actually hollow, was placed next to the track. The truck rolled past the box as would be expected. Then the box was placed on the track to block the path of the truck. When the truck was rolled down the track this time, it continued unimpeded. The infants spent significantly more time looking at this impossible event (Figure 11). Baillargeon (1987) concluded that they knew solid objects cannot pass through each other. Baillargeon’s findings suggest that very young children have an understanding of objects and how they work, which Piaget (1954) would have said is beyond their cognitive abilities due to their limited experiences in the world.

Image A shows a toy truck coasting along a track unobstructed. Image B shows a toy truck coasting along a track with a box in the background. Image C shows a truck coasting along a track and going through what appears to be an obstruction.

Just as there are physical milestones that we expect children to reach, there are also cognitive milestones. It is helpful to be aware of these milestones as children gain new abilities to think, problem solve, and communicate. For example, infants shake their head “no” around 6–9 months, and they respond to verbal requests to do things like “wave bye-bye” or “blow a kiss” around 9–12 months. Remember Piaget’s ideas about object permanence? We can expect children to grasp the concept that objects continue to exist even when they are not in sight by around 8 months old. Because toddlers (i.e., 12–24 months old) have mastered object permanence, they enjoy games like hide and seek, and they realize that when someone leaves the room they will come back (Loop, 2013). Toddlers also point to pictures in books and look in appropriate places when you ask them to find objects.

Preschool-age children (i.e., 3–5 years old) also make steady progress in cognitive development. Not only can they count, name colors, and tell you their name and age, but they can also make some decisions on their own, such as choosing an outfit to wear. Preschool-age children understand basic time concepts and sequencing (e.g., before and after), and they can predict what will happen next in a story. They also begin to enjoy the use of humor in stories. Because they can think symbolically, they enjoy pretend play and inventing elaborate characters and scenarios. One of the most common examples of their cognitive growth is their blossoming curiosity. Preschool-age children love to ask “Why?”

An important cognitive change occurs in children this age. Recall that Piaget described 2–3 year olds as egocentric, meaning that they do not have an awareness of others’ points of view. Between 3 and 5 years old, children come to understand that people have thoughts, feelings, and beliefs that are different from their own. This is known as theory-of-mind (TOM). Children can use this skill to tease others, persuade their parents to purchase a candy bar, or understand why a sibling might be angry. When children develop TOM, they can recognize that others have false beliefs (Dennett, 1987; Callaghan et al., 2005).

False-belief tasks are useful in determining a child’s acquisition of theory-of-mind (TOM). Take a look at this video clip showing a false-belief task involving a box of crayons.

You can view the transcript for "The "False Belief" Test: Theory of Mind" here (opens in new window) .

Cognitive skills continue to expand in middle and late childhood (6–11 years old). Thought processes become more logical and organized when dealing with concrete information (Figure 12). Children at this age understand concepts such as the past, present, and future, giving them the ability to plan and work toward goals. Additionally, they can process complex ideas such as addition and subtraction and cause-and-effect relationships. However, children’s attention spans tend to be very limited until they are around 11 years old. After that point, it begins to improve through adulthood.

A photograph of children playing baseball is shown. Five children are in the picture, two on one team, and three on the other.

One well-researched aspect of cognitive development is language acquisition. As mentioned earlier, the order in which children learn language structures is consistent across children and cultures (Hatch, 1983). You’ve also learned that some psychological researchers have proposed that children possess a biological predisposition for language acquisition.

Starting before birth, babies begin to develop language and communication skills. At birth, babies apparently recognize their mother’s voice and can discriminate between the language(s) spoken by their mothers and foreign languages, and they show preferences for faces that are moving in synchrony with audible language (Blossom & Morgan, 2006; Pickens, 1994; Spelke & Cortelyou, 1981).

Children communicate information through gesturing long before they speak, and there is some evidence that gesture usage predicts subsequent language development (Iverson & Goldin-Meadow, 2005). In terms of producing spoken language, babies begin to coo almost immediately. Cooing is a one-syllable combination of a consonant and a vowel sound (e.g., coo or ba). Interestingly, babies replicate sounds from their own languages. A baby whose parents speak French will coo in a different tone than a baby whose parents speak Spanish or Urdu. After cooing, the baby starts to babble. Babbling begins with repeating a syllable, such as ma-ma, da-da, or ba-ba. When a baby is about 12 months old, we expect her to say her first word for meaning, and to start combining words for meaning at about 18 months.

At about 2 years old, a toddler uses between 50 and 200 words; by 3 years old they have a vocabulary of up to 1,000 words and can speak in sentences. During the early childhood years, children's vocabulary increases at a rapid pace. This is sometimes referred to as the “vocabulary spurt” and has been claimed to involve an expansion in vocabulary at a rate of 10–20 new words per week. Recent research may indicate that while some children experience these spurts, it is far from universal (as discussed in Ganger & Brent, 2004). It has been estimated that, 5 year olds understand about 6,000 words, speak 2,000 words, and can define words and question their meanings. They can rhyme and name the days of the week. Seven year olds speak fluently and use slang and clichés (Stork & Widdowson, 1974).

What accounts for such dramatic language learning by children? Behaviorist B. F. Skinner thought that we learn language in response to reinforcement or feedback, such as through parental approval or through being understood. For example, when a two-year-old child asks for juice, he might say, “me juice,” to which his mother might respond by giving him a cup of apple juice. Noam Chomsky (1957) criticized Skinner’s theory and proposed that we are all born with an innate capacity to learn language. Chomsky called this mechanism a language acquisition device (LAD). Who is correct? Both Chomsky and Skinner are right. Remember that we are a product of both nature and nurture. Researchers now believe that language acquisition is partially inborn and partially learned through our interactions with our linguistic environment (Gleitman & Newport, 1995; Stork & Widdowson, 1974).

Everyday Connection: The Importance of Play and Recess

According to the American Academy of Pediatrics (2007), unstructured play is an integral part of a child’s development. It builds creativity, problem solving skills, and social relationships. Play also allows children to develop a theory-of-mind as they imaginatively take on the perspective of others.

Outdoor play allows children the opportunity to directly experience and sense the world around them. While doing so, they may collect objects that they come across and develop lifelong interests and hobbies. They also benefit from increased exercise, and engaging in outdoor play can actually increase how much they enjoy physical activity. This helps support the development of a healthy heart and brain. Unfortunately, research suggests that today’s children are engaging in less and less outdoor play (Clements, 2004). Perhaps, it is no surprise to learn that lowered levels of physical activity in conjunction with easy access to calorie-dense foods with little nutritional value are contributing to alarming levels of childhood obesity (Karnik & Kanekar, 2012).

Despite the adverse consequences associated with reduced play, some children are over scheduled and have little free time to engage in unstructured play. In addition, some schools have taken away recess time for children in a push for students to do better on standardized tests, and many schools commonly use loss of recess as a form of punishment. Do you agree with these practices? Why or why not?

Psychosocial development occurs as children form relationships, interact with others, and understand and manage their feelings. In social and emotional development, forming healthy attachments is very important and is the major social milestone of infancy. Attachment  is a long-standing connection or bond with others. Developmental psychologists are interested in how infants reach this milestone. They ask such questions as: How do parent and infant attachment bonds form? How does neglect affect these bonds? What accounts for children’s attachment differences?

Building on the work of Harlow and others, John Bowlby developed the concept of attachment theory. He defined attachment as the affectional bond or tie that an infant forms with the mother (Bowlby, 1969). An infant must form this bond with a primary caregiver in order to have normal social and emotional development. In addition, Bowlby proposed that this attachment bond is very powerful and continues throughout life. He used the concept of secure base to define a healthy attachment between parent and child (1988). A secure base is a parental presence that gives the child a sense of safety as he explores his surroundings. Bowlby said that two things are needed for a healthy attachment: The caregiver must be responsive to the child’s physical, social, and emotional needs; and the caregiver and child must engage in mutually enjoyable interactions (Bowlby, 1969) (Figure 13).

A person is shown holding an infant.

While Bowlby thought attachment was an all-or-nothing process, Mary Ainsworth’s (1970) research showed otherwise. Ainsworth wanted to know if children differ in the ways they bond, and if so, why. To find the answers, she used the Strange Situation procedure to study attachment between mothers and their infants (1970). In the Strange Situation, the mother (or primary caregiver) and the infant (age 12-18 months) are placed in a room together. There are toys in the room, and the caregiver and child spend some time alone in the room. After the child has had time to explore her surroundings, a stranger enters the room. The mother then leaves her baby with the stranger. After a few minutes, she returns to comfort her child.

Based on how the infants/toddlers responded to the separation and reunion, Ainsworth identified three types of parent-child attachments: secure, avoidant, and resistant (Ainsworth & Bell, 1970). A fourth style, known as disorganized attachment, was later described (Main & Solomon, 1990). The most common type of attachment—also considered the healthiest—is called secure attachment (Figure 14). In this type of attachment, the toddler prefers his parent over a stranger. The attachment figure is used as a secure base to explore the environment and is sought out in times of stress. Securely attached children were distressed when their caregivers left the room in the Strange Situation experiment, but when their caregivers returned, the securely attached children were happy to see them. Securely attached children have caregivers who are sensitive and responsive to their needs.

A photograph shows a person squatting down next to a small child who is standing up.

With avoidant attachment   (sometimes called insecure or anxious-avoidant), the child is unresponsive to the parent, does not use the parent as a secure base, and does not care if the parent leaves. The toddler reacts to the parent the same way she reacts to a stranger. When the parent does return, the child is slow to show a positive reaction. Ainsworth theorized that these children were most likely to have a caregiver who was insensitive and inattentive to their needs (Ainsworth, Blehar, Waters, & Wall, 1978).

In cases of resistant attachment (also called ambivalent or anxious-ambivalent/resistant), children tend to show clingy behavior, but then they reject the attachment figure’s attempts to interact with them (Ainsworth & Bell, 1970). These children do not explore the toys in the room, as they are too fearful. During separation in the Strange Situation, they became extremely disturbed and angry with the parent. When the parent returns, the children are difficult to comfort. Resistant attachment is the result of the caregivers’ inconsistent level of response to their child.

Finally, children with disorganized attachment  behaved oddly in the Strange Situation. They freeze, run around the room in an erratic manner, or try to run away when the caregiver returns (Main & Solomon, 1990). This type of attachment is seen most often in kids who have been abused. Research has shown that abuse disrupts a child’s ability to regulate their emotions.

While Ainsworth’s research has found support in subsequent studies, it has also met criticism. Some researchers have pointed out that a child’s temperament may have a strong influence on attachment (Gervai, 2009; Harris, 2009), and others have noted that attachment varies from culture to culture, a factor not accounted for in Ainsworth’s research (Rothbaum, Weisz, Pott, Miyake, & Morelli, 2000; van Ijzendoorn & Sagi-Schwartz, 2008).

Watch this video to view a clip of the Strange Situation. Try to identify which type of attachment baby Lisa exhibits.

You can view the transcript for "The Strange Situation - Mary Ainsworth" here (opens in new window) .

Self-Concept

Just as attachment is the main psychosocial milestone of infancy, the primary psychosocial milestone of childhood is the development of a positive sense of self. How does self-awareness develop? Infants don’t have a self-concept, which is an understanding of who they are. If you place a baby in front of a mirror, she will reach out to touch her image, thinking it is another baby. However, by about 18 months a toddler will recognize that the person in the mirror is herself. How do we know this? In a well-known experiment, a researcher placed a red dot of paint on children’s noses before putting them in front of a mirror (Amsterdam, 1972). Commonly known as the mirror test, this behavior is demonstrated by humans and a few other species and is considered evidence of self-recognition (Archer, 1992). At 18 months old they would touch their own noses when they saw the paint, surprised to see a spot on their faces. By 24–36 months old children can name and/or point to themselves in pictures, clearly indicating self-recognition.

Children from 2–4 years old display a great increase in social behavior once they have established a self-concept. They enjoy playing with other children, but they have difficulty sharing their possessions. Also, through play children explore and come to understand their gender roles and can label themselves as a girl or boy (Chick, Heilman-Houser, & Hunter, 2002). By 4 years old, children can cooperate with other children, share when asked, and separate from parents with little anxiety. Children at this age also exhibit autonomy, initiate tasks, and carry out plans. Success in these areas contributes to a positive sense of self. Once children reach 6 years old, they can identify themselves in terms of group memberships: “I’m a first grader!” School-age children compare themselves to their peers and discover that they are competent in some areas and less so in others (recall Erikson’s task of industry versus inferiority). At this age, children recognize their own personality traits as well as some other traits they would like to have. For example, 10-year-old Layla says, “I’m kind of shy. I wish I could be more talkative like my friend Alexa.”

Development of a positive self-concept is important to healthy development. Children with a positive self-concept tend to be more confident, do better in school, act more independently, and are more willing to try new activities (Maccoby, 1980; Ferrer & Fugate, 2003). Formation of a positive self-concept begins in Erikson’s toddlerhood stage, when children establish autonomy and become confident in their abilities. Development of self-concept continues in elementary school, when children compare themselves to others. When the comparison is favorable, children feel a sense of competence and are motivated to work harder and accomplish more. Self-concept is re-evaluated in Erikson’s adolescence stage, as teens form an identity. They internalize the messages they have received regarding their strengths and weaknesses, keeping some messages and rejecting others. Adolescents who have achieved identity formation are capable of contributing positively to society (Erikson, 1968).

What can parents do to nurture a healthy self-concept? Diana Baumrind (1971, 1991) thinks parenting style may be a factor. The way we parent is an important factor in a child’s socioemotional growth. Baumrind developed and refined a theory describing four parenting styles: authoritative, authoritarian, permissive, and uninvolved. With the authoritative style , the parent gives reasonable demands and consistent limits, expresses warmth and affection, and listens to the child’s point of view. Parents set rules and explain the reasons behind them. They are also flexible and willing to make exceptions to the rules in certain cases—for example, temporarily relaxing bedtime rules to allow for a nighttime swim during a family vacation. Of the four parenting styles, the authoritative style is the one that is most encouraged in modern American society. American children raised by authoritative parents tend to have high self-esteem and social skills. However, effective parenting styles vary as a function of culture and, as Small (1999) points out, the authoritative style is not necessarily preferred or appropriate in all cultures.

In authoritarian style , the parent places high value on conformity and obedience. The parents are often strict, tightly monitor their children, and express little warmth. In contrast to the authoritative style, authoritarian parents probably would not relax bedtime rules during a vacation because they consider the rules to be set, and they expect obedience. This style can create anxious, withdrawn, and unhappy kids. However, it is important to point out that authoritarian parenting is as beneficial as the authoritative style in some ethnic groups (Russell, Crockett, & Chao, 2010). For instance, first-generation Chinese American children raised by authoritarian parents did just as well in school as their peers who were raised by authoritative parents (Russell et al., 2010).

For parents who employ the permissive style  of parenting, the kids run the show and anything goes. Permissive parents make few demands and rarely use punishment. They tend to be very nurturing and loving, and may play the role of friend rather than parent. In terms of our example of vacation bedtimes, permissive parents might not have bedtime rules at all—instead they allow the child to choose his bedtime whether on vacation or not. Not surprisingly, children raised by permissive parents tend to lack self-discipline, and the permissive parenting style is negatively associated with grades (Dornbusch, Ritter, Leiderman, Roberts, & Fraleigh, 1987). The permissive style may also contribute to other risky behaviors such as alcohol abuse (Bahr & Hoffman, 2010), risky sexual behavior especially among female children (Donenberg, Wilson, Emerson, & Bryant, 2002), and increased display of disruptive behaviors by male children (Parent et al., 2011). However, there are some positive outcomes associated with children raised by permissive parents. They tend to have higher self-esteem, better social skills, and report lower levels of depression (Darling, 1999).

With the uninvolved style  of parenting, the parents are indifferent, uninvolved, and sometimes referred to as neglectful. They don’t respond to the child’s needs and make relatively few demands. This could be because of severe depression or substance abuse, or other factors such as the parents’ extreme focus on work. These parents may provide for the child’s basic needs, but little else. The children raised in this parenting style are usually emotionally withdrawn, fearful, anxious, perform poorly in school, and are at an increased risk of substance abuse (Darling, 1999).

As you can see, parenting styles influence childhood adjustment, but could a child’s temperament likewise influence parenting? Temperament refers to innate traits that influence how one thinks, behaves, and reacts with the environment. Children with easy temperaments demonstrate positive emotions, adapt well to change, and are capable of regulating their emotions. Conversely, children with difficult temperaments demonstrate negative emotions and have difficulty adapting to change and regulating their emotions. Difficult children are much more likely to challenge parents, teachers, and other caregivers (Thomas, 1984). Therefore, it’s possible that easy children (i.e., social, adaptable, and easy to soothe) tend to elicit warm and responsive parenting, while demanding, irritable, withdrawn children evoke irritation in their parents or cause their parents to withdraw (Sanson & Rothbart, 1995).

Development in Adolescence and Adulthood

Changes in development during childhood are rapid and more obvious than the changes that come later on in life, but before you reach adulthood, there is one more large transition: adolescence. Adolescence brings the physical development of puberty, as well as cognitive, social, and emotional changes. Following adolescence, transitions are less obvious, but still significant throughout emerging adulthood and adulthood. Finally, growing older means confronting many psychological, emotional, and social issues that come with entering the last phase of life.

Watch this video from a few of the world's oldest people for some advice on how you can also live a fulfilling life until the very end.

You can view the transcript for "How to Be the Oldest Person Alive" here (opens in new window) .

  • Describe physical, cognitive, and emotional development that occurs during adolescence
  • Describe physical, cognitive, and emotional development that occurs in adulthood
  • Differentiate between fluid and crystallized intelligence

Adolescence

Adolescence is a socially constructed concept. In pre-industrial society, children were considered adults when they reached physical maturity, but today we have an extended time between childhood and adulthood called adolescence. Adolescence is the period of development that begins at puberty and ends at emerging adulthood, or into the mid- to late 20s. In the United States, adolescence is seen as a time to develop independence from parents while remaining connected to them (Figure 15). The typical age range of adolescence is from 12 to 18 years, and this stage of development also has some predictable physical, cognitive, and psychosocial milestones.

Several people are congregated by the beach. There is a net in the background.

As noted above, adolescence begins with puberty. While the sequence of physical changes in puberty is predictable, the onset and pace of puberty vary widely. Several physical changes occur during puberty, such as adrenarche and gonadarche, the maturing of the adrenal glands and sex glands, respectively. Also during this time, primary and secondary sexual characteristics develop and mature. Primary sexual characteristics are organs specifically needed for reproduction, like the uterus and ovaries in females and testes in males. Secondary sexual characteristics are physical signs of sexual maturation that do not directly involve sex organs, such as development of breasts and hips in girls, and development of facial hair and a deepened voice in boys. Girls experience menarche, the beginning of menstrual periods, usually around 12–13 years old, and boys experience spermarche, the first ejaculation, around 13–14 years old.

During puberty, both sexes experience a rapid increase in height (i.e., growth spurt). For girls this begins between 8 and 13 years old, with adult height reached between 10 and 16 years old. Boys begin their growth spurt slightly later, usually between 10 and 16 years old, and reach their adult height between 13 and 17 years old. Both nature (i.e., genes) and nurture (e.g., nutrition, medications, and medical conditions) can influence height.

Because rates of physical development vary so widely among teenagers, puberty can be a source of pride or embarrassment. Early maturing boys tend to be stronger, taller, and more athletic than their later maturing peers. They are usually more popular, confident, and independent, but they are also at a greater risk for substance abuse and early sexual activity (Flannery, Rowe, & Gulley, 1993; Kaltiala-Heino, Rimpela, Rissanen, & Rantanen, 2001). Early maturing girls may be teased or overtly admired, which can cause them to feel self-conscious about their developing bodies. These girls are at a higher risk for depression, substance abuse, and eating disorders (Ge, Conger, & Elder, 2001; Graber, Lewinsohn, Seeley, & Brooks-Gunn, 1997; Striegel-Moore & Cachelin, 1999). Late blooming boys and girls (i.e., they develop more slowly than their peers) may feel self-conscious about their lack of physical development. Negative feelings are particularly a problem for late maturing boys, who are at a higher risk for depression and conflict with parents (Graber et al., 1997) and more likely to be bullied (Pollack & Shuster, 2000).

The adolescent brain also remains under development. Recall from your earlier study, that the brain consists of six regions: temporal lobe, brain stem, cerebellum, occipital lobe (includes the visual cortex), parietal lobe, and the frontal lobe. The frontal lobe consists of the prefrontal cortex, premotor cortex, and motor cortex. The prefrontal lobe lies just behind the forehead. Up until puberty, brain cells continue to bloom in the frontal region. Adolescents engage in increased risk-taking behaviors and emotional outbursts possibly because the frontal lobes of their brains are still developing (Figure 16). Recall that this area is often called the "CEO of the brain", as it is responsible for judgment, impulse control, and planning. It is still maturing into early adulthood, up until around age 25 (Casey, Tottenham, Liston, & Durston, 2005).

An illustration of a brain is shown with the frontal lobe labeled.

Brain maturity occurs when there is growth of new neural connections and the pruning of unused neurons and connections. According to recent research, the brain regions tend to develop from the back to the front of the brain. Also, myelin continues to grow around axons and neurons helping to speed transmission between the various regions of the brain.

Psychosocial Development

Adolescents continue to refine their sense of self as they relate to others. Erikson referred to the task of the adolescent as one of identity versus role confusion. Thus, in Erikson’s view, an adolescent’s main questions are “Who am I?” and “Who do I want to be?” Some adolescents adopt the values and roles that their parents expect for them. Other teens develop identities that are in opposition to their parents but align with a peer group. This is common as peer relationships become a central focus in adolescents’ lives.

As adolescents work to form their identities, they pull away from their parents, and the peer group becomes very important (Shanahan, McHale, Osgood, & Crouter, 2007). Despite spending less time with their parents, most teens report positive feelings toward them (Moore, Guzman, Hair, Lippman, & Garrett, 2004). Warm and healthy parent-child relationships have been associated with positive child outcomes, such as better grades and fewer school behavior problems, in the United States as well as in other countries (Hair et al., 2005).

It appears that most teens don’t experience adolescent storm and stress to the degree once famously suggested by G. Stanley Hall, a pioneer in the study of adolescent development. Only small numbers of teens have major conflicts with their parents (Steinberg & Morris, 2001), and most disagreements are minor. For example, in a study of over 1,800 parents of adolescents from various cultural and ethnic groups, Barber (1994) found that conflicts occurred over day-to-day issues such as homework, money, curfews, clothing, chores, and friends. These types of arguments tend to decrease as teens develop (Galambos & Almeida, 1992).

Emerging Adulthood

The next stage of development is emerging adulthood . This is a relatively newly defined period of lifespan development spanning from 18 years old to the mid-20s, characterized as an in-between time where identity exploration is focused on work and love.

When does a person become an adult? There are many ways to answer this question. In the United States, you are legally considered an adult at 18 years old. But other definitions of adulthood vary widely; in sociology, for example, a person may be considered an adult when she becomes self-supporting, chooses a career, gets married, or starts a family. The ages at which we achieve these milestones vary from person to person as well as from culture to culture. For example, in the African country of Malawi, 15-year-old Njemile was married at 14 years old and had her first child at 15 years old. In her culture she is considered an adult. Children in Malawi take on adult responsibilities such as marriage and work (e.g., carrying water, tending babies, and working fields) as early as 10 years old. In stark contrast, independence in Western cultures is taking longer and longer, effectively delaying the onset of adult life.

Why is it taking twenty-somethings so long to grow up? It seems that emerging adulthood is a product of both Western culture and our current times (Arnett, 2000). People in developed countries are living longer, allowing the freedom to take an extra decade to start a career and family. Changes in the workforce also play a role. For example, 50 years ago, a young adult with a high school diploma could immediately enter the work force and climb the corporate ladder. That is no longer the case. Bachelor’s and even graduate degrees are required more and more often—even for entry-level jobs (Arnett, 2000). In addition, many students are taking longer (five or six years) to complete a college degree as a result of working and going to school at the same time. After graduation, many young adults return to the family home because they have difficulty finding a job. Changing cultural expectations may be the most important reason for the delay in entering adult roles. Young people are spending more time exploring their options, so they are delaying marriage and work as they change majors and jobs multiple times, putting them on a much later timetable than their parents (Arnett, 2000).

Adulthood begins around 20 years old and has three distinct stages: early, middle, and late. Each stage brings its own set of rewards and challenges.

By the time we reach early adulthood (20 to early 40s), our physical maturation is complete, although our height and weight may increase slightly. In young adulthood, our physical abilities are at their peak, including muscle strength, reaction time, sensory abilities, and cardiac functioning. Most professional athletes are at the top of their game during this stage. Many women have children in the young adulthood years, so they may see additional weight gain and breast changes.

Middle adulthood extends from the 40s to the 60s (Figure 18). Physical decline is gradual. The skin loses some elasticity, and wrinkles are among the first signs of aging. Visual acuity decreases during this time. Women experience a gradual decline in fertility as they approach the onset of menopause, the end of the menstrual cycle, around 50 years old. Both men and women tend to gain weight: in the abdominal area for men and in the hips and thighs for women. Hair begins to thin and turn gray.

Late adulthood is considered to extend from the 60s on. This is the last stage of physical change. The skin continues to lose elasticity, reaction time slows further, and muscle strength diminishes. Smell, taste, hearing, and vision, so sharp in our twenties, decline significantly. The brain may also no longer function at optimal levels, leading to problems like memory loss, dementia, and Alzheimer’s disease in later years.

Because we spend so many years in adulthood (more than any other stage), cognitive changes are numerous. In fact, research suggests that adult cognitive development is a complex, ever changing process that may be even more active than cognitive development in infancy and early childhood (Fischer, Yan, & Stewart, 2003).

Researchers have identified areas of both losses and gains in cognition in older age. Cognitive ability and intelligence are often measured using standardized tests and validated measures. The psychometric approach has identified two categories of intelligence that show different rates of change across the life span (Schaie & Willis, 1996). Fluid intelligence  refers to information processing abilities, such as logical reasoning, remembering lists, spatial ability, and reaction time. Crystallized intelligence  encompasses abilities that draw upon experience and knowledge. Measures of crystallized intelligence include vocabulary tests, solving number problems, and understanding texts.

Photograph of an older man holding a cane while getting off of his moped.

With age, systematic declines are observed on cognitive tasks requiring self-initiated, effortful processing, without the aid of supportive memory cues (Park, 2000). Older adults tend to perform poorer than young adults on memory tasks that involve recall of information, where individuals must retrieve information they learned previously without the help of a list of possible choices. For example, older adults may have more difficulty recalling facts such as names or contextual details about where or when something happened (Craik, 2000). What might explain these deficits as we age? As we age, working memory, or our ability to simultaneously store and use information, becomes less efficient (Craik & Bialystok, 2006). The ability to process information quickly also decreases with age. This slowing of processing speed may explain age differences on many different cognitive tasks (Salthouse, 2004). Some researchers have argued that inhibitory functioning, or the ability to focus on certain information while suppressing attention to less pertinent information, declines with age and may explain age differences in performance on cognitive tasks (Hasher & Zacks, 1988). Finally, it is well established that our hearing and vision decline as we age. Longitudinal research has proposed that deficits in sensory functioning explain age differences in a variety of cognitive abilities (Baltes & Lindenberger, 1997).

Fewer age differences are observed when memory cues are available, such as for recognition memory tasks, or when individuals can draw upon acquired knowledge or experience. For example, older adults often perform as well if not better than young adults on tests of word knowledge or vocabulary. With age often comes expertise, and research has pointed to areas where aging experts perform as well or better than younger individuals. For example, older typists were found to compensate for age-related declines in speed by looking farther ahead at printed text (Salthouse, 1984). Compared to younger players, older chess experts are able to focus on a smaller set of possible moves, leading to greater cognitive efficiency (Charness, 1981). Accrued knowledge of everyday tasks, such as grocery prices, can help older adults to make better decisions than young adults (Tentori, Osheron, Hasher, & May, 2001).

How do changes or maintenance of cognitive ability affect older adults’ everyday lives? Researchers have studied cognition in the context of several different everyday activities. One example is driving. Although older adults often have more years of driving experience, cognitive declines related to reaction time or attentional processes may pose limitations under certain circumstances (Park & Gutchess, 2000). Research on interpersonal problem solving suggested that older adults use more effective strategies than younger adults to navigate through social and emotional problems (Blanchard-Fields, 2007). In the context of work, researchers rarely find that older individuals perform poorer on the job (Park & Gutchess, 2000). Similar to everyday problem solving, older workers may develop more efficient strategies and rely on expertise to compensate for cognitive decline.

How can we delay the onset of cognitive decline? Mental and physical activity seems to play a part (Figure 20). Research has found adults who engage in mentally and physically stimulating activities experience less cognitive decline and have a reduced incidence of mild cognitive impairment and dementia (Hertzog, Kramer, Wilson, & Lindenberger, 2009; Larson et al., 2006; Podewils et al., 2005).

There are many theories about the social and emotional aspects of aging. Some aspects of healthy aging include activities, social connectedness, and the role of a person’s culture. According to many theorists, including George Vaillant (2002), who studied and analyzed over 50 years of data, we need to have and continue to find meaning throughout our lives. For those in early and middle adulthood, meaning is found through work (Sterns & Huyck, 2001) and family life (Markus, Ryff, Curan, & Palmersheim, 2004). These areas relate to the tasks that Erikson referred to as intimacy versus isolation in early adulthood and  generativity versus stagnation  in middle adulthood. As mentioned previously, adults tend to define themselves by what they do—their careers. Earnings peak during this time, yet job satisfaction is more closely tied to work that involves contact with other people, is interesting, provides opportunities for advancement, and allows some independence (Mohr & Zoghi, 2006) than it is to salary (Iyengar, Wells, & Schwartz, 2006). How might being unemployed or being in a dead-end job challenge adult well-being?

As people enter the final stages of life, they have what Erik Erikson described as a crisis over integrity versus despair. In other words, they review the events of their lives and try to come to terms with the mark (or lack thereof) that they have made on the world. People who believe they have had a positive impact on the world through their contributions live the end of life with a sense of integrity. Those who feel they have not measured up to certain standards—either their own or others'—develop a sense of despair.

Positive relationships with significant others in our adult years have been found to contribute to a state of well-being (Ryff & Singer, 2009). Most adults in the United States identify themselves through their relationships with family—particularly with spouses, children, and parents (Markus et al., 2004). While raising children can be stressful, especially when they are young, research suggests that parents reap the rewards down the road, as adult children tend to have a positive effect on parental well-being (Umberson, Pudrovska, & Reczek, 2010). Having a stable marriage has also been found to contribute to well-being throughout adulthood (Vaillant, 2002).

Another aspect of positive aging is believed to be social connectedness and social support. As we get older, socioemotional selectivity theory suggests that our social support and friendships dwindle in number, but remain as close, if not more close than in our earlier years (Carstensen, 1992) (Figure 21).

Putting It Together: Lifespan Development

In this chapter, you learned to

  • compare and contrast theories lifespan development theories
  • explain the physical, cognitive, and emotional development that occurs from infancy through childhood
  • describe physical, cognitive, and emotional development in adolescence and adulthood

Our understanding of human nature has come a long way since the belief that children were just little adults in need of instruction. Through ongoing research, we now know that children hit certain milestones that enable them to take another viewpoint or understand the law of conservation, that babies can understand enough about the world around them to make moral judgments, and that issues of physical, social, and cognitive importance change across the lifespan.

Adolescence is one of the time periods of interest to psychologists, especially due to the focus on identity formation, which often involves a period of exploration followed by commitments to particular identities. Adolescence is characterized by risky behavior, which is made more likely by changes in the brain in which reward-processing centers develop more rapidly than cognitive control systems, making adolescents more sensitive to rewards than to possible negative consequences.

Marcia (1966) described identify formation during adolescence as involving both decision points and commitments with respect to ideologies (e.g., religion, politics) and occupations. He described four identity statuses: foreclosure, identity diffusion, moratorium, and identity achievement.

  • Foreclosure occurs when an individual commits to an identity without exploring options.
  • Identity diffusion occurs when adolescents neither explore nor commit to any identities.
  • Moratorium is a state in which adolescents are actively exploring options but have not yet made commitments.
  • Identity achievement occurs when individuals have explored different options and then made identity commitments.

Think about your own adolescent experience (you may consider yourself still in this life stage). Which identity status best fits with your own experience? Do you feel committed to your current identity, or do you feel as though you are still developing? Regardless of your answer, you can rest assured that human development does not end with adolescence, and research proves that people can continue to learn, grow, and even change as long as they would like.

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  • How to Be the Oldest Person Alive. Authored by : Glamour Magazine. License : Other. License Terms : Standard YouTube License .  Located at : https://www.youtube.com/watch?v=I62njq9gsaI .

study of development using norms, or average ages, when most children reach specific developmental milestones

all of the beliefs, customs, art, and traditions of a particular society

view that development is a cumulative process: gradually improving on existing skills

view that development takes place in unique stages, which happen at specific times or ages

process proposed by Freud in which pleasure-seeking urges focus on different erogenous zones of the body as humans move through five stages of life

domain of lifespan development that examines emotions, personality, and social relationships from infancy through adulthood, proposed by Erikson

(plural = schemata) mental construct consisting of a cluster or collection of related concepts

adjustment of a schema by adding information similar to what is already known

adjustment of a schema by changing a scheme to accommodate new information different from what was already known

idea that even if something is out of sight, it still exists

second stage in Piaget’s theory of cognitive development; from ages 2 to 7, children learn to use symbols and language but do not understand mental operations and often think illogically

idea that even if you change the appearance of something, it is still equal in size, volume, or number as long as nothing is added or removed

preoperational child’s difficulty in taking the perspective of others

third stage in Piaget’s theory of cognitive development; from about 7 to 11 years old, children can think logically about real (concrete) events

principle that objects can be changed, but then returned back to their original form or condition

structure created when a sperm and egg merge at conception; begins as a single cell and rapidly divides to form the embryo and placenta

multi-cellular organism in its early stages of development

structure connected to the uterus that provides nourishment and oxygen to the developing baby

medical care during pregnancy that monitors the health of both the mother and the fetus

time during fetal growth when specific parts or organs develop

inborn automatic response to a particular form of stimulation that all healthy babies are born with

ability to move our body and manipulate objects

use of muscles in fingers, toes, and eyes to coordinate small actions

use of large muscle groups to control arms and legs for large body movements

long-standing connection or bond with others

parental presence that gives the infant/toddler a sense of safety as they explore their surroundings

characterized by the child using the parent as a secure base from which to explore

characterized by child’s unresponsiveness to parent, does not use the parent as a secure base, and does not care if parent leaves

characterized by the child’s tendency to show clingy behavior and rejection of the parent when they attempt to interact with the child

characterized by the child’s odd behavior when faced with the parent; type of attachment seen most often with kids that are abused

parents give children reasonable demands and consistent limits, express warmth and affection, and listen to the child’s point of view

parents place a high value on conformity and obedience, are often rigid, and express little warmth to the child

parents make few demands and rarely use punishment

parents are indifferent, uninvolved, and sometimes referred to as neglectful; they don’t respond to the child’s needs and make relatively few demands

period of development that begins at puberty and ends at early adulthood

newly defined period of lifespan development from 18 years old to the mid-20s; young people are taking longer to complete college, get a job, get married, and start a family

information processing abilities, such as logical reasoning, remembering lists, spatial ability, and reaction time

intelligence that draw upon experience and knowledge. Measures include vocabulary tests, solving number problems, and understanding texts

Psychological Science: Understanding Human Behavior Copyright © by Karenna Malavanti is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License , except where otherwise noted.

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Cognitive Development in Adulthood

Cognitive development in early adulthood.

A woman shown at her desk, deep in thought with a notebook open in front of her

We have learned about cognitive development from infancy through adolescence, ending with Piaget’s stage of formal operations. Does that mean that cognitive development stops with adolescence? Couldn’t there be different ways of thinking in adulthood that come after (or “post”) formal operations?

In this section, we will learn about these types of postformal operational thought and consider research done by William Perry related to types of thought and advanced thinking. We will also look at education in early adulthood, the relationship between education and work, and some tools used by young adults to choose their careers.

Beyond Formal Operational Thought: Postformal Thought

College students presenting at a conference.

Figure 1 . As young adults gain more experience, they think increasingly more in the abstract and are able to understand different perspectives and complexities.

In the adolescence module, we discussed Piaget’s formal operational thought. The hallmark of this type of thinking is the ability to think abstractly or to consider possibilities and ideas about circumstances never directly experienced. Thinking abstractly is only one characteristic of adult thought, however. If you compare a 14-year-old with someone in their late 30s, you would probably find that the later considers not only what is possible, but also what is likely. Why the change? The young adult has gained experience and understands why possibilities do not always become realities. This difference in adult and adolescent thought can spark arguments between the generations.

Here is an example. A student in her late 30s relayed such an argument she was having with her 14-year-old son. The son had saved a considerable amount of money and wanted to buy an old car and store it in the garage until he was old enough to drive. He could sit in it, pretend he was driving, clean it up, and show it to his friends. It sounded like a perfect opportunity. The mother, however, had practical objections. The car would just sit for several years while deteriorating. The son would probably change his mind about the type of car he wanted by the time he was old enough to drive and they would be stuck with a car that would not run. She was also concerned that having a car nearby would be too much temptation and the son might decide to sneak it out for a quick ride before he had a permit or license.

Piaget’s theory of cognitive development ended with formal operations, but it is possible that other ways of thinking may develop after (or “post”) formal operations in adulthood (even if this thinking does not constitute a separate “stage” of development). Postformal thought is practical, realistic and more individualistic, but also characterized by understanding the complexities of various perspectives. As a person approaches the late 30s, chances are they make decisions out of necessity or because of prior experience and are less influenced by what others think. Of course, this is particularly true in individualistic cultures such as the United States. Postformal thought is often described as more flexible, logical, willing to accept moral and intellectual complexities, and dialectical than previous stages in development.

Perry’s Scheme

One of the first theories of cognitive development in early adulthood originated with William Perry (1970), who studied undergraduate students at Harvard University.  Perry noted that over the course of students’ college years, cognition tended to shift from dualism (absolute, black and white, right and wrong type of thinking) to multiplicity (recognizing that some problems are solvable and some answers are not yet known) to relativism (understanding the importance of the specific context of knowledge—it’s all relative to other factors). Similar to Piaget’s formal operational thinking in adolescence, this change in thinking in early adulthood is affected by educational experiences.

Video 1. Perry’s Scheme of Intellectual Development. 

Dialectical Thought

In addition to moving toward more practical considerations, thinking in early adulthood may also become more flexible and balanced. Abstract ideas that the adolescent believes in firmly may become standards by which the individual evaluates reality. As Perry’s research pointed out, adolescents tend to think in dichotomies or absolute terms; ideas are true or false; good or bad; right or wrong and there is no middle ground. However, with education and experience, the young adult comes to recognize that there is some right and some wrong in each position. Such thinking is more realistic because very few positions, ideas, situations, or people are completely right or wrong.

Some adults may move even beyond the relativistic or contextual thinking described by Perry; they may be able to bring together important aspects of two opposing viewpoints or positions, synthesize them, and come up with new ideas. This is referred to as  dialectical thought  and is considered one of the most advanced aspects of postformal thinking (Basseches, 1984). There isn’t just one theory of postformal thought; there are variations, with emphasis on adults’ ability to tolerate ambiguity or to accept contradictions or find new problems, rather than solve problems, etc. (as well as relativism and dialecticism that we just learned about). What they all have in common is the proposition that the way we think may change during adulthood with education and experience.

Schaie and Willis’ Stage Theory of Cognition

Another perspective on post-formal cognitive development focuses less on the development of cognitive skills and instead discerns the changes in the use of intellect. Shaie and Willis’ stage theory of cognition proposed several stages of adult cognitive development.

personal essay about cognitive development

During childhood and adolescence, cognition is about the acquisition of new knowledge and skills. These young people may not yet know how they will use these acquired skills. In early adulthood, people switch their focus from the acquisition to the application of knowledge, as they use what they know to pursue careers and develop their families. This is called the  achieving stage. It represents most prominently the application of intelligence in situations that have profound consequences for achieving long-term goals. The kind of intelligence exhibited in such situations is similar to that employed in educational tasks, but it requires careful attention to the possible consequences of the problem-solving process.

Adults who have mastered the cognitive skills required for monitoring their own behavior and, as a consequence, have attained a certain degree of personal independence will next move into a stage that requires the application of cognitive skills in situations involving social responsibility. Typically, the responsible stage occurs when a family is established and the needs of a spouse and offspring must be met. Similar extensions of adult cognitive skills are required as responsibilities for others are acquired on the job and in the community.

Some individualsʼ responsibilities become exceedingly complex. Such individuals-presidents of business firms, deans of academic institutions, officials of churches, and a number of other positions-need to understand the structure and the dynamic forces of organizations. They must monitor organizational activities not only on a temporal dimension (past, present, and future), but also up and down the hierarchy that defines the organization. They need to know not only the future plans of the organization but also whether policy decisions are being adequately translated into action at lower levels of responsibility. Attainment of the executive stage, as a variation on the responsibility stage, depends on exposure to opportunities that allow the development and practice of the relevant skills (Avolio, 1991; Smith, Staudinger, & Baltes, 1994).

In the later years of life, beyond the age of 60 or 65, the need to acquire knowledge declines even more, and executive monitoring is less important because frequently the individual has retired from the position that required such an application of intelligence. This stage, reintegration , corresponds in its position in the life course to Eriksonʼs stage of ego integrity. The information that elderly people acquire and the knowledge they apply becomes a function of their interests, attitudes, and values. It requires, in fact, the reintegration of all of these. The elderly are less likely to “waste time” on tasks that are meaningless to them. They are unlikely to expend much effort to solve a problem unless that problem is one that they face frequently in their lives. This stage frequently includes a selective reduction of interpersonal networks in the interest of reintegrating oneʼs concern in a more self-directed and supportive manner (cf. Carstensen, 1993; Carstensen, Gross, & Fung, 1997). In addition, efforts must be directed towards planning how oneʼs resources will last for the remaining 15 to 30 years of post-retirement life that are now characteristic for most individuals in industrialized societies. These efforts include active planning for that time when dependence upon others may be required to maintain a high quality of life in the face of increasing frailty. Such efforts may involve changes in oneʼs housing arrangements, or even oneʼs place of residence, as well as making certain of the eventual availability of both familial and extra-familial support systems. The activities involved in this context include making or changing oneʼs will, drawing up advanced medical directives and durable powers of attorney, as well as creating trusts or other financial arrangements that will protect resources for use during the final years of life or for the needs of other family members.

Although some of these activities involve the same cognitive characteristics of the responsible stage, these objectives involved are far more centered upon current and future needs of the individual rather than the needs of their family or of an organizational entity. Efforts must now be initiated to reorganize oneʼs time and resources to substitute a meaningful environment, often found in leisure activities, volunteerism, and involvement with a larger kinship network. Eventually, however, activities are also engaged in maximizing the quality of life during the final years, often with the additional objective of not becoming a burden for the next generation. The unique objective of these demands upon the individual represent an almost universal process occurring at least in the industrialized societies, and designation of a separate reorganizational stage is therefore warranted. The skills required for the reorganizational stage require the maintenance of reasonably high levels of cognitive competence. In addition, maintenance of flexible cognitive styles are needed to be able to restructure the context and content of life after retirement, to relinquish control of resources to others and to accept the partial surrender of oneʼs independence (Schaie, 1984; 2005).

Many older persons reach advanced old age in relative comfort and often with a clear mind albeit a frail body. Once the reintegrative efforts described above have been successfully completed, yet one other stage is frequently observed. This last stage is concerned with cognitive activities by many of the very old that occur in anticipation of the end of their life. This is a legacy stage t ha t is part of the cognitive development of many, if not all, older persons. This stage often begins by the effort to conduct a life review (Butler, Lewis, & Sunderland, 1998). For the highly literate and those successful in public or professional life this will often include writing or revising an autobiography (Birren, Kenyon, Ruth, Schroots, & Swensson, 1995; Birren & Schroots, 2006). There are also many other more mundane legacies to be left. Women, in particular, often wish to put their remaining effects in order and often distribute many of their prized possessions to friends and relatives, or create elaborate instructions for distributing them. It is not uncommon for many very old people to make a renewed effort at providing an oral history or to explain family pictures and heirloom to the next generation. Last, but not least, directions may be given for funeral arrangements, occasionally including the donation of oneʼs body for scientific research, and there may be a final revision of oneʼs will.

Education and Work

Education in early adulthood.

According to the U.S. Census Bureau (2017), 90 percent of the American population 25 and older have completed high school or higher level of education—compare this to just 24 percent in 1940! Each generation tends to earn (and perhaps need) increased levels of formal education. As we can see in the graph, approximately one-third of the American adult population has a bachelor’s degree or higher, as compared with less than 5 percent in 1940. Educational attainment rates vary by gender and race. All races combined, women are slightly more likely to have graduated from college than men; that gap widens with graduate and professional degrees. However, wide racial disparities still exist. For example, 23 percent of African-Americans have a college degree and only 16.4 percent of Hispanic Americans have a college degree, compared to 37 percent of non-Hispanic white Americans. The college graduation rates of African-Americans and Hispanic Americans have been growing in recent years, however (the rate has doubled since 1991 for African-Americans and it has increased 60 percent in the last two decades for Hispanic-Americans).

Line graph showing highest educational attainment levels since 1940. In 1940 4.6% of adults over 25 had a bachelor's degree and then 33.4% in 2016.

Figure 2.  Since 1940, there has been a significant rise in educational attainment for adults over age 25.

Education and the Workplace

With the rising costs of higher education, various news headlines have asked if a college education is worth the cost. One way to address this question is in terms of the earning potential associated with various levels of educational achievement. In 2016, the average earnings for Americans 25 and older with only a high school education was $35,615, compared with $65,482 for those with a bachelor’s degree, compared with $92,525 for those with more advanced degrees. Average earnings vary by gender, race, and geographical location in the United States.

Of concern in recent years is the relationship between higher education and the workplace. In 2005, American educator and then Harvard University President, Derek Bok, called for a closer alignment between the goals of educators and the demands of the economy. Companies outsource much of their work, not only to save costs but to find workers with the skills they need. What is required to do well in today’s economy? Colleges and universities, he argued, need to promote global awareness, critical thinking skills, the ability to communicate, moral reasoning, and responsibility in their students. Regional accrediting agencies and state organizations provide similar guidelines for educators. Workers need skills in listening, reading, writing, speaking, global awareness, critical thinking, civility, and computer literacy—all skills that enhance success in the workplace.

More than a decade later, the question remains: does formal education prepare young adults for the workplace? It depends on whom you ask. In an article referring to information from the National Association of Colleges and Employers’ 2018 Job Outlook Survey, Bauer-Wolf (2018) explains that employers perceive gaps in students’ competencies but many graduating college seniors are overly confident. The biggest difference was in perceived professionalism and work ethic (only 43 percent of employers thought that students are competent in this area compared to 90 percent of the students). Similar differences were also found in terms of oral communication, written communication, and critical thinking skills. Only in terms of digital technology skills were more employers confident about students’ competencies than were the students (66 percent compared to 60 percent).

It appears that students need to learn what some call “soft skills,” as well as the particular knowledge and skills within their college major. As education researcher Loni Bordoloi Pazich (2018) noted, most American college students today are enrolling in business or other pre-professional programs and to be effective and successful workers and leaders, they would benefit from the communication, teamwork, and critical thinking skills, as well as the content knowledge, gained from liberal arts education. In fact, two-thirds of children starting primary school now will be employed in jobs in the future that currently do not exist. Therefore, students cannot learn every single skill or fact that they may need to know, but they can learn how to learn, think, research, and communicate well so that they are prepared to continually learn new things and adapt effectively in their careers and lives since the economy, technology, and global markets will continue to evolve.

Career Choices in Early Adulthood

Hopefully, we are each becoming lifelong learners, particularly since we are living longer and will most likely change jobs multiple times during our lives. However, for many, our job changes will be within the same general occupational field, so our initial career choice is still significant. We’ve seen with Erikson that identity largely involves occupation and, as we will learn in the next section, Levinson found that young adults typically form a dream about work (though females may have to choose to focus relatively more on work or family initially with “split” dreams). The American School Counselor Association recommends that school counselors aid students in their career development beginning as early as kindergarten and continue this development throughout their education.

One of the most well-known theories about career choice is from John Holland (1985), who proposed that there are six personality types (realistic, investigative, artistic, social, enterprising, and conventional), as well as varying types of work environments. The better matched one’s personality is to the workplace characteristics, the more satisfied and successful one is predicted to be with that career or vocational choice. Research support has been mixed and we should note that there is more to satisfaction and success in a career than one’s personality traits or likes and dislikes. For instance, education, training, and abilities need to match the expectations and demands of the job, plus the state of the economy, availability of positions, and salary rates may play practical roles in choices about work.

Link to Learning: What’s Your Right Career?

To complete a free online career questionnaire and identify potential careers based on your preferences, go to:

Career One Stop Questionnaire

Did you find out anything intere sting? Think of this activity as a starting point to your career exploration.  Other great ways for young adults to research careers include informational interviewing, job shadowing, volunteering, practicums, and internships. Once you have a few careers in mind that you want to find out more about, go to the  Occupational Outlook Handbook from the U.S. Bureau of Labor Statistics to learn about job tasks, required education, average pay, and projected outlook for the future.

  • Introduction to Cognitive Development in Early Adulthood. Authored by : Margaret Clark-Plaskie for Lumen Learning. Provided by : Lumen Learning. License : CC BY: Attribution
  • Modification, adaptation, and original content. Authored by : Margaret Clark-Plaskie. Provided by : Lumen Learning. License : CC BY: Attribution
  • Young Woman. Authored by : Karolina Grabowska. Located at : https://pixabay.com/images/id-791849/ . License : CC0: No Rights Reserved
  • Psyc 200 Lifespan Psychology. Authored by : Laura Overstreet. Located at : http://opencourselibrary.org/econ-201/ . License : CC BY: Attribution
  • Millennials Jam Workshop: Youth and ICTs beyond 2015. Authored by : ITU Pictures. Located at : https://www.flickr.com/photos/itupictures/9024333319 . License : CC BY: Attribution
  • Summary of Perry's research. Provided by : Wikipedia. Located at : https://en.wikipedia.org/wiki/William_G._Perry . License : CC BY: Attribution
  • Postformal thought. Provided by : Wikipedia. Located at : https://en.wikipedia.org/wiki/Postformal_thought . License : CC BY-SA: Attribution-ShareAlike
  • Perry's Scheme of Intellectual Development. Authored by : Eric Landrum. Located at : https://www.youtube.com/watch?v=XkEJIXvwROs . License : Other . License Terms : Standard YouTube License
  • Highest Educational Levels Reached by Adults in the U.S. Since 1940. Provided by : U.S. Census Bureau. Located at : https://www.census.gov/library/visualizations/2017/comm/cb17-51_educational_attainment.html . License : All Rights Reserved

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Social Sci LibreTexts

7.7: Cognitive Development during Adolescence

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Learning Outcomes

  • Explain Piaget’s theory on formal operational thought
  • Describe cognitive abilities and changes during adolescence

three adolescent boys look at a note together

Adolescence is a time of rapid cognitive development. Biological changes in brain structure and connectivity in the brain interact with increased experience, knowledge, and changing social demands to produce rapid cognitive growth. These changes generally begin at puberty or shortly thereafter, and some skills continue to develop as an adolescent ages. Development of executive functions, or cognitive skills that enable the control and coordination of thoughts and behavior, are generally associated with the prefrontal cortex area of the brain. The thoughts, ideas, and concepts developed at this period of life greatly influence one’s future life and play a major role in character and personality formation.

Perspectives and Advancements in Adolescent Thinking

There are two perspectives on adolescent thinking: constructivist and information-processing. The constructivist perspective , based on the work of Piaget, takes a quantitative, stage-theory approach. This view hypothesizes that adolescents’ cognitive improvement is relatively sudden and drastic. The information-processing perspective derives from the study of artificial intelligence and explains cognitive development in terms of the growth of specific components of the overall process of thinking.

Improvements in basic thinking abilities generally occur in five areas during adolescence:

  • Attention . Improvements are seen in selective attention (the process by which one focuses on one stimulus while tuning out another), as well as divided attention (the ability to pay attention to two or more stimuli at the same time).
  • Memory . Improvements are seen in working memory and long-term memory.
  • Processing Speed. Adolescents think more quickly than children. Processing speed improves sharply between age five and middle adolescence, levels off around age 15, and does not appear to change between late adolescence and adulthood.
  • Organization . Adolescents are more aware of their own thought processes and can use mnemonic devices and other strategies to think and remember information more efficiently.
  • Metacognition . Adolescents can think about thinking itself. This often involves monitoring one’s own cognitive activity during the thinking process. Metacognition provides the ability to plan ahead, see the future consequences of an action, and provide alternative explanations of events.

Formal Operational Thought

In the last of the Piagetian stages, a child becomes able to reason not only about tangible objects and events, but also about hypothetical or abstract ones. Hence it has the name formal operational stage—the period when the individual can “operate” on “forms” or representations. This allows an individual to think and reason with a wider perspective. This stage of cognitive development, termed by Piaget as formal operational thought , marks a movement from an ability to think and reason from concrete visible events to an ability to think hypothetically and entertain what-if possibilities about the world. An individual can solve problems through abstract concepts and utilize hypothetical and deductive reasoning. Adolescents use trial and error to solve problems, and the ability to systematically solve a problem in a logical and methodical way emerges.

This video explains some of the cognitive development consistent with formal operational thought.

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A YouTube element has been excluded from this version of the text. You can view it online here: http://pb.libretexts.org/lsdm/?p=276

You can view the transcript for “Formal operational stage – Intro to Psychology” here (opens in new window) .

Formal Operational Thinking in the Classroom

School is a main contributor in guiding students towards formal operational thought. With students at this level, the teacher can pose hypothetical (or contrary-to-fact) problems: “What if the world had never discovered oil?” or “What if the first European explorers had settled first in California instead of on the East Coast of the United States?” To answer such questions, students must use hypothetical reasoning , meaning that they must manipulate ideas that vary in several ways at once, and do so entirely in their minds.

The hypothetical reasoning that concerned Piaget primarily involved scientific problems. His studies of formal operational thinking therefore often look like problems that middle or high school teachers pose in science classes. In one problem, for example, a young person is presented with a simple pendulum, to which different amounts of weight can be hung (Inhelder & Piaget, 1958). The experimenter asks: “What determines how fast the pendulum swings: the length of the string holding it, the weight attached to it, or the distance that it is pulled to the side?” The young person is not allowed to solve this problem by trial-and-error with the materials themselves, but must reason a way to the solution mentally. To do so systematically, he or she must imagine varying each factor separately, while also imagining the other factors that are held constant. This kind of thinking requires facility at manipulating mental representations of the relevant objects and actions—precisely the skill that defines formal operations.

As you might suspect, students with an ability to think hypothetically have an advantage in many kinds of school work: by definition, they require relatively few “props” to solve problems. In this sense they can in principle be more self-directed than students who rely only on concrete operations—certainly a desirable quality in the opinion of most teachers. Note, though, that formal operational thinking is desirable but not sufficient for school success, and that it is far from being the only way that students achieve educational success. Formal thinking skills do not insure that a student is motivated or well-behaved, for example, nor does it guarantee other desirable skills. The fourth stage in Piaget’s theory is really about a particular kind of formal thinking, the kind needed to solve scientific problems and devise scientific experiments. Since many people do not normally deal with such problems in the normal course of their lives, it should be no surprise that research finds that many people never achieve or use formal thinking fully or consistently, or that they use it only in selected areas with which they are very familiar (Case & Okomato, 1996). For teachers, the limitations of Piaget’s ideas suggest a need for additional theories about development—ones that focus more directly on the social and interpersonal issues of childhood and adolescence.

Hypothetical and abstract thinking

One of the major premises of formal operational thought is the capacity to think of possibility, not just reality. Adolescents’ thinking is less bound to concrete events than that of children; they can contemplate possibilities outside the realm of what currently exists. One manifestation of the adolescent’s increased facility with thinking about possibilities is the improvement of skill in deductive reasoning (also called top-down reasoning), which leads to the development of hypothetical thinking . This provides the ability to plan ahead, see the future consequences of an action and to provide alternative explanations of events. It also makes adolescents more skilled debaters, as they can reason against a friend’s or parent’s assumptions. Adolescents also develop a more sophisticated understanding of probability.

This appearance of more systematic, abstract thinking allows adolescents to comprehend the sorts of higher-order abstract logic inherent in puns, proverbs, metaphors, and analogies. Their increased facility permits them to appreciate the ways in which language can be used to convey multiple messages, such as satire, metaphor, and sarcasm. (Children younger than age nine often cannot comprehend sarcasm at all). This also permits the application of advanced reasoning and logical processes to social and ideological matters such as interpersonal relationships, politics, philosophy, religion, morality, friendship, faith, fairness, and honesty.

Metacognition

Metacognition refers to “thinking about thinking.” It is relevant in social cognition as it results in increased introspection, self-consciousness, and intellectualization. Adolescents are much better able to understand that people do not have complete control over their mental activity. Being able to introspect may lead to forms of egocentrism, or self-focus, in adolescence. Adolescent egocentrism is a term that David Elkind used to describe the phenomenon of adolescents’ inability to distinguish between their perception of what others think about them and what people actually think in reality. Elkind’s theory on adolescent egocentrism is drawn from Piaget’s theory on cognitive developmental stages, which argues that formal operations enable adolescents to construct imaginary situations and abstract thinking.

Accordingly, adolescents are able to conceptualize their own thoughts and conceive of other people’s thoughts. However, Elkind pointed out that adolescents tend to focus mostly on their own perceptions, especially on their behaviors and appearance, because of the “physiological metamorphosis” they experience during this period. This leads to adolescents’ belief that other people are as attentive to their behaviors and appearance as they are of themselves. According to Elkind, adolescent egocentrism results in two distinct problems in thinking: the imaginary audience and the personal fable . These likely peak at age fifteen, along with self-consciousness in general.

Imaginary audience is a term that Elkind used to describe the phenomenon that an adolescent anticipates the reactions of other people to him/herself in actual or impending social situations. Elkind argued that this kind of anticipation could be explained by the adolescent’s preoccupation that others are as admiring or as critical of them as they are of themselves. As a result, an audience is created, as the adolescent believes that they will be the focus of attention.

However, more often than not the audience is imaginary because in actual social situations individuals are not usually the sole focus of public attention. Elkind believed that the construction of imaginary audiences would partially account for a wide variety of typical adolescent behaviors and experiences; and imaginary audiences played a role in the self-consciousness that emerges in early adolescence. However, since the audience is usually the adolescent’s own construction, it is privy to his or her own knowledge of him/herself. According to Elkind, the notion of imaginary audience helps to explain why adolescents usually seek privacy and feel reluctant to reveal themselves–it is a reaction to the feeling that one is always on stage and constantly under the critical scrutiny of others.

Elkind also addressed that adolescents have a complex set of beliefs that their own feelings are unique and they are special and immortal. Personal fable is the term Elkind created to describe this notion, which is the complement of the construction of imaginary audience. Since an adolescent usually fails to differentiate their own perceptions and those of others, they tend to believe that they are of importance to so many people (the imaginary audiences) that they come to regard their feelings as something special and unique. They may feel that only they have experienced strong and diverse emotions, and therefore others could never understand how they feel. This uniqueness in one’s emotional experiences reinforces the adolescent’s belief of invincibility, especially to death.

This adolescent belief in personal uniqueness and invincibility becomes an illusion that they can be above some of the rules, disciplines and laws that apply to other people; even consequences such as death (called the invincibility fable ) . This belief that one is invincible removes any impulse to control one’s behavior (Lin, 2016). [1] Therefore, adolescents will engage in risky behaviors, such as drinking and driving or unprotected sex, and feel they will not suffer any negative consequences.

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Intuitive and Analytic Thinking

Piaget emphasized the sequence of thought throughout four stages. Others suggest that thinking does not develop in sequence, but instead, that advanced logic in adolescence may be influenced by intuition. Cognitive psychologists often refer to intuitive and analytic thought as the dual-process model ; the notion that humans have two distinct networks for processing information (Kuhn, 2013.) [2] Intuitive thought is automatic, unconscious, and fast, and it is more experiential and emotional.

In contrast, a nalytic thought is deliberate, conscious, and rational (logical). While these systems interact, they are distinct (Kuhn, 2013). Intuitive thought is easier, quicker, and more commonly used in everyday life. As discussed in the adolescent brain development section earlier in this module, the discrepancy between the maturation of the limbic system and the prefrontal cortex, may make teens more prone to emotional intuitive thinking than adults. As adolescents develop, they gain in logic/analytic thinking ability and sometimes regress, with social context, education, and experiences becoming major influences. Simply put, being “smarter” as measured by an intelligence test does not advance cognition as much as having more experience, in school and in life (Klaczynski & Felmban, 2014). [3]

Risk-taking

Because most injuries sustained by adolescents are related to risky behavior (alcohol consumption and drug use, reckless or distracted driving, and unprotected sex), a great deal of research has been done on the cognitive and emotional processes underlying adolescent risk-taking. In addressing this question, it is important to distinguish whether adolescents are more likely to engage in risky behaviors (prevalence), whether they make risk-related decisions similarly or differently than adults (cognitive processing perspective), or whether they use the same processes but value different things and thus arrive at different conclusions. The behavioral decision-making theory proposes that adolescents and adults both weigh the potential rewards and consequences of an action. However, research has shown that adolescents seem to give more weight to rewards, particularly social rewards, than do adults. Adolescents value social warmth and friendship, and their hormones and brains are more attuned to those values than to long-term consequences (Crone & Dahl, 2012). [4]

Four teenagers gathered around a table attempting to figure out a logic problem together.

Some have argued that there may be evolutionary benefits to an increased propensity for risk-taking in adolescence. For example, without a willingness to take risks, teenagers would not have the motivation or confidence necessary to leave their family of origin. In addition, from a population perspective, there is an advantage to having a group of individuals willing to take more risks and try new methods, counterbalancing the more conservative elements more typical of the received knowledge held by older adults.

Relativistic Thinking

Adolescents are more likely to engage in relativistic thinking —in other words, they are more likely to question others’ assertions and less likely to accept information as absolute truth. Through experience outside the family circle, they learn that rules they were taught as absolute are actually relativistic. They begin to differentiate between rules crafted from common sense (don’t touch a hot stove) and those that are based on culturally relative standards (codes of etiquette). This can lead to a period of questioning authority in all domains.

As we continue through this module, we will discuss how this influences moral reasoning, as well as psychosocial and emotional development. These more abstract developmental dimensions (cognitive, moral, emotional, and social dimensions) are not only more subtle and difficult to measure, but these developmental areas are also difficult to tease apart from one another due to the inter-relationships among them. For instance, our cognitive maturity will influence the way we understand a particular event or circumstance, which will in turn influence our moral judgments about it, and our emotional responses to it. Similarly, our moral code and emotional maturity influence the quality of our social relationships with others.

[glossary-page] [glossary-term]adolescent egocentrism: [/glossary-term] [glossary-definition]a characteristic of adolescent thinking that leads young people (ages 10-13) to focus on themselves to the exclusion of others (according to David Elkind)[/glossary-definition]

[glossary-term]analytic thought:[/glossary-term] [glossary-definition]thought that results from analysis, such as a systematic ranking of pros and cons, risks and consequences, possibilities and facts. Analytic thought depends on logic and rationality[/glossary-definition]

[glossary-term]behavioral decision-making theory:[/glossary-term] [glossary-definition]proposes that adolescents and adults both weigh the potential rewards and consequences of an action. However, research has shown that adolescents seem to give more weight to rewards, particularly social rewards, than do adults[/glossary-definition]

[glossary-term]constructivist perspective:[/glossary-term] [glossary-definition]based on the work of Piaget, a quantitative, stage-theory approach. This view hypothesizes that adolescents’ cognitive improvement is relatively sudden and drastic, as adolescents learn by acting on their environment and they actively construct knowledge[/glossary-definition]

[glossary-term]deductive reasoning:[/glossary-term] [glossary-definition]reasoning from a general statement, premise, or principle, though logical steps to figure out (deduce) specifics. Also called top-down processing[/glossary-definition]

[glossary-term]divided attention:[/glossary-term] [glossary-definition]the ability to pay attention to two or more stimuli at the same time; this ability improves during adolescence[/glossary-definition]

[glossary-term]dual process model/dual processing:[/glossary-term] [glossary-definition]the notion that two networks exist within the human brain, one for emotional processing of stimuli and one for analytic reasoning[/glossary-definition]

[glossary-term]formal operational thought:[/glossary-term] [glossary-definition]the fourth and final stage of Piaget’s theory of cognitive development, characterized by more systematic logical thinking and by the ability to understand and systematically manipulate abstract concepts[/glossary-definition]

[glossary-term]hypothetical thought:[/glossary-term] [glossary-definition]reasoning that includes propositions and possibilities that may not reflect reality[/glossary-definition]

[glossary-term]imaginary audience:[/glossary-term] [glossary-definition]the other people who, in an adolescent’s egocentric belief, are watching and taking note of his or her appearance, ideas, and behavior. This belief makes many adolescents very self-conscious[/glossary-definition]

[glossary-term]information-processing perspective:[/glossary-term] [glossary-definition]derives from the study of artificial intelligence and explains cognitive development in terms of the growth of specific components of the overall process of thinking[/glossary-definition]

[glossary-term]intuitive thought:[/glossary-term] [glossary-definition]thoughts that arises from an emotion or a hunch, beyond rational explanation, and is influenced by past experiences and cultural assumptions[/glossary-definition]

[glossary-term]invincibility fable:[/glossary-term] [glossary-definition]an adolescent’s egocentric conviction that he or she cannot be overcome or even harmed by anything that might defeat a normal mortal, such as unprotected sex, drug abuse, or high-speed driving[/glossary-definition]

[glossary-term]metacognition:[/glossary-term] [glossary-definition]refers to “thinking about thinking” and it is relevant in social cognition and results in increased introspection, self-consciousness, and intellectualization during adolescence[/glossary-definition]

[glossary-term]mnemonic devices:[/glossary-term] [glossary-definition]mental strategies to help learn and remember information more efficiently; improves during adolescence[/glossary-definition]

[glossary-term]personal fable:[/glossary-term] [glossary-definition]an aspect of adolescent egocentrism characterized by an adolescent’s belief that his or her thoughts, feelings, and experiences are unique, more wonderful, or more awful than anyone else’s[/glossary-definition]

[glossary-term]relativistic thinking:[/glossary-term] [glossary-definition]thinking that understands the relative, or situational, nature of circumstances[/glossary-definition]

[glossary-term]selective attention:[/glossary-term] [glossary-definition]the process by which one focuses on one stimulus while tuning out another; this ability improves during adolescence[/glossary-definition] [/glossary-page]

  • Linn, P. (2016). Risky behaviors: Integrating adolescent egocentrism with the theory of planned behavior. Review of General Psychology, 20 (4), 392-398. ↵
  • Kuhn, D. (2013). Reasoning. In Philip D. Zelazo (Ed.), The Oxford handbook of developmental psychology (Vol. 1, pp. 744-764). New York: NY: Oxford University Press. ↵
  • Klaczynski, P.A. & Felmban, W.S. (2014). Heuristics and biases during adolescence: Developmental reversals and individual differences. In Henry Markovitz (Ed.), The developmental psychology of reasoning and decision making (pp. 84-111). New York, NY: Psychology Press. ↵
  • Crone, E.A., & Dahl, R.E. (2012). Understanding adolescence as a period of social-affective engagement and goal flexibility. Nature Reviews Neuroscience, 13 (9), 636-650. ↵

Contributors and Attributions

  • Adolescent development; cognitive development. Authored by : Jennifer Lansford. Provided by : Duke University. Located at : http://nobaproject.com/modules/adolescent-development?r=LDE2MjU3 . Project : The Noba Project. License : CC BY-NC-SA: Attribution-NonCommercial-ShareAlike
  • Stages of Development. Authored by : OpenStax College. Located at : http://cnx.org/contents/[email protected]:1/Psychology . License : CC BY: Attribution . License Terms : Download for free at http://cnx.org/content/col11629/latest/ .
  • Adolescence. Provided by : Boundless. Located at : https://courses.lumenlearning.com/boundless-psychology/chapter/adolescence/ . License : CC BY-SA: Attribution-ShareAlike
  • Adolescent egocentrism. Located at : https://en.Wikipedia.org/wiki/Adolescent_egocentrism#cite_note-Elkindeia-1 . License : CC BY-SA: Attribution-ShareAlike
  • adolescent boys. Authored by : An Min. Provided by : Pxhere. Located at : https://pxhere.com/en/photo/1515959 . License : CC0: No Rights Reserved
  • Adolescence. Provided by : Wikipedia. Located at : https://en.Wikipedia.org/wiki/Adolescence . License : CC BY-SA: Attribution-ShareAlike
  • Educational Psychology. Authored by : Kelvin Seifert. Provided by : OpenStax. Located at : https://cnx.org/contents/[email protected]:9u2dcFad@2/Cognitive-development-the-theory-of-Jean-Piaget . License : CC BY: Attribution . License Terms : Download for free at http://cnx.org/contents/[email protected] .
  • Formal operational stage - Intro to Psychology. Provided by : Udacity. Located at : https://www.youtube.com/watch?v=hvq7tq2fx1Y . License : Other . License Terms : Standard YouTube License

Piaget’s Theory and Stages of Cognitive Development

Saul Mcleod, PhD

Editor-in-Chief for Simply Psychology

BSc (Hons) Psychology, MRes, PhD, University of Manchester

Saul Mcleod, PhD., is a qualified psychology teacher with over 18 years of experience in further and higher education. He has been published in peer-reviewed journals, including the Journal of Clinical Psychology.

Learn about our Editorial Process

Olivia Guy-Evans, MSc

Associate Editor for Simply Psychology

BSc (Hons) Psychology, MSc Psychology of Education

Olivia Guy-Evans is a writer and associate editor for Simply Psychology. She has previously worked in healthcare and educational sectors.

On This Page:

Key Takeaways

  • Jean Piaget is famous for his theories regarding changes in cognitive development that occur as we move from infancy to adulthood.
  • Cognitive development results from the interplay between innate capabilities (nature) and environmental influences (nurture).
  • Children progress through four distinct stages , each representing varying cognitive abilities and world comprehension: the sensorimotor stage (birth to 2 years), the preoperational stage (2 to 7 years), the concrete operational stage (7 to 11 years), and the formal operational stage (11 years and beyond).
  • A child’s cognitive development is not just about acquiring knowledge, the child has to develop or construct a mental model of the world, which is referred to as a schema .
  • Piaget emphasized the role of active exploration and interaction with the environment in shaping cognitive development, highlighting the importance of assimilation and accommodation in constructing mental schemas.

Stages of Development

Jean Piaget’s theory of cognitive development suggests that children move through four different stages of intellectual development which reflect the increasing sophistication of children’s thought

Each child goes through the stages in the same order (but not all at the same rate), and child development is determined by biological maturation and interaction with the environment.

At each stage of development, the child’s thinking is qualitatively different from the other stages, that is, each stage involves a different type of intelligence.

Although no stage can be missed out, there are individual differences in the rate at which children progress through stages, and some individuals may never attain the later stages.

Piaget did not claim that a particular stage was reached at a certain age – although descriptions of the stages often include an indication of the age at which the average child would reach each stage.

The Sensorimotor Stage

Ages: Birth to 2 Years

The first stage is the sensorimotor stage , during which the infant focuses on physical sensations and learning to coordinate its body.

sensorimotor play 1

Major Characteristics and Developmental Changes:

  • The infant learns about the world through their senses and through their actions (moving around and exploring their environment).
  • During the sensorimotor stage, a range of cognitive abilities develop. These include: object permanence; self-recognition (the child realizes that other people are separate from them); deferred imitation; and representational play.
  • They relate to the emergence of the general symbolic function, which is the capacity to represent the world mentally
  • At about 8 months, the infant will understand the permanence of objects and that they will still exist even if they can’t see them and the infant will search for them when they disappear.

During the beginning of this stage, the infant lives in the present. It does not yet have a mental picture of the world stored in its memory therefore it does not have a sense of object permanence.

If it cannot see something, then it does not exist. This is why you can hide a toy from an infant, while it watches, but it will not search for the object once it has gone out of sight.

The main achievement during this stage is object permanence – knowing that an object still exists, even if it is hidden. It requires the ability to form a mental representation (i.e., a schema) of the object.

Towards the end of this stage the general symbolic function begins to appear where children show in their play that they can use one object to stand for another. Language starts to appear because they realise that words can be used to represent objects and feelings.

The child begins to be able to store information that it knows about the world, recall it, and label it.

Individual Differences

  • Cultural Practices : In some cultures, babies are carried on their mothers’ backs throughout the day. This constant physical contact and varied stimuli can influence how a child perceives their environment and their sense of object permanence.
  • Gender Norms : Toys assigned to babies can differ based on gender expectations. A boy might be given more cars or action figures, while a girl might receive dolls or kitchen sets. This can influence early interactions and sensory explorations.

Learn More: The Sensorimotor Stage of Cognitive Development

The Preoperational Stage

Ages: 2 – 7 Years

Piaget’s second stage of intellectual development is the preoperational stage . It takes place between 2 and 7 years. At the beginning of this stage, the child does not use operations, so the thinking is influenced by the way things appear rather than logical reasoning.

A child cannot conserve which means that the child does not understand that quantity remains the same even if the appearance changes.

Furthermore, the child is egocentric; he assumes that other people see the world as he does. This has been shown in the three mountains study.

As the preoperational stage develops, egocentrism declines, and children begin to enjoy the participation of another child in their games, and let’s pretend play becomes more important.

pretend play

Toddlers often pretend to be people they are not (e.g. superheroes, policemen), and may play these roles with props that symbolize real-life objects. Children may also invent an imaginary playmate.

  • Toddlers and young children acquire the ability to internally represent the world through language and mental imagery.
  • During this stage, young children can think about things symbolically. This is the ability to make one thing, such as a word or an object, stand for something other than itself.
  • A child’s thinking is dominated by how the world looks, not how the world is. It is not yet capable of logical (problem-solving) type of thought.
  • Moreover, the child has difficulties with class inclusion; he can classify objects but cannot include objects in sub-sets, which involves classifying objects as belonging to two or more categories simultaneously.
  • Infants at this stage also demonstrate animism. This is the tendency for the child to think that non-living objects (such as toys) have life and feelings like a person’s.

By 2 years, children have made some progress toward detaching their thoughts from the physical world. However, have not yet developed logical (or “operational”) thought characteristics of later stages.

Thinking is still intuitive (based on subjective judgments about situations) and egocentric (centered on the child’s own view of the world).

  • Cultural Storytelling : Different cultures have unique stories, myths, and folklore. Children from diverse backgrounds might understand and interpret symbolic elements differently based on their cultural narratives.
  • Race & Representation : A child’s racial identity can influence how they engage in pretend play. For instance, a lack of diverse representation in media and toys might lead children of color to recreate scenarios that don’t reflect their experiences or background.

Learn More: The Preoperational Stage of Cognitive Development

The Concrete Operational Stage

Ages: 7 – 11 Years

By the beginning of the concrete operational stage , the child can use operations (a set of logical rules) so they can conserve quantities, realize that people see the world in a different way (decentring), and demonstrate improvement in inclusion tasks. Children still have difficulties with abstract thinking.

concrete operational stage

  • During this stage, children begin to think logically about concrete events.
  • Children begin to understand the concept of conservation; understanding that, although things may change in appearance, certain properties remain the same.
  • During this stage, children can mentally reverse things (e.g., picture a ball of plasticine returning to its original shape).
  • During this stage, children also become less egocentric and begin to think about how other people might think and feel.

The stage is called concrete because children can think logically much more successfully if they can manipulate real (concrete) materials or pictures of them.

Piaget considered the concrete stage a major turning point in the child’s cognitive development because it marks the beginning of logical or operational thought. This means the child can work things out internally in their head (rather than physically try things out in the real world).

Children can conserve number (age 6), mass (age 7), and weight (age 9). Conservation is the understanding that something stays the same in quantity even though its appearance changes.

But operational thought is only effective here if the child is asked to reason about materials that are physically present. Children at this stage will tend to make mistakes or be overwhelmed when asked to reason about abstract or hypothetical problems.

  • Cultural Context in Conservation Tasks : In a society where resources are scarce, children might demonstrate conservation skills earlier due to the cultural emphasis on preserving and reusing materials.
  • Gender & Learning : Stereotypes about gender abilities, like “boys are better at math,” can influence how children approach logical problems or classify objects based on perceived gender norms.

Learn More: The Concrete Operational Stage of Development

The Formal Operational Stage

Ages: 12 and Over

The formal operational period begins at about age 11. As adolescents enter this stage, they gain the ability to think in an abstract manner, the ability to combine and classify items in a more sophisticated way, and the capacity for higher-order reasoning.

abstract thinking

Adolescents can think systematically and reason about what might be as well as what is (not everyone achieves this stage). This allows them to understand politics, ethics, and science fiction, as well as to engage in scientific reasoning.

Adolescents can deal with abstract ideas: e.g. they can understand division and fractions without having to actually divide things up, and solve hypothetical (imaginary) problems.

  • Concrete operations are carried out on things whereas formal operations are carried out on ideas. Formal operational thought is entirely freed from physical and perceptual constraints.
  • During this stage, adolescents can deal with abstract ideas (e.g. no longer needing to think about slicing up cakes or sharing sweets to understand division and fractions).
  • They can follow the form of an argument without having to think in terms of specific examples.
  • Adolescents can deal with hypothetical problems with many possible solutions. E.g. if asked ‘What would happen if money were abolished in one hour’s time? they could speculate about many possible consequences.

From about 12 years children can follow the form of a logical argument without reference to its content. During this time, people develop the ability to think about abstract concepts, and logically test hypotheses.

This stage sees the emergence of scientific thinking, formulating abstract theories and hypotheses when faced with a problem.

  • Culture & Abstract Thinking : Cultures emphasize different kinds of logical or abstract thinking. For example, in societies with a strong oral tradition, the ability to hold complex narratives might develop prominently.
  • Gender & Ethics : Discussions about morality and ethics can be influenced by gender norms. For instance, in some cultures, girls might be encouraged to prioritize community harmony, while boys might be encouraged to prioritize individual rights.

Learn More: The Formal Operational Stage of Development

Piaget’s Theory

  • Piaget’s theory places a strong emphasis on the active role that children play in their own cognitive development.
  • According to Piaget, children are not passive recipients of information; instead, they actively explore and interact with their surroundings.
  • This active engagement with the environment is crucial because it allows them to gradually build their understanding of the world.

1. How Piaget Developed the Theory

Piaget was employed at the Binet Institute in the 1920s, where his job was to develop French versions of questions on English intelligence tests. He became intrigued with the reasons children gave for their wrong answers to the questions that required logical thinking.

He believed that these incorrect answers revealed important differences between the thinking of adults and children.

Piaget branched out on his own with a new set of assumptions about children’s intelligence:

  • Children’s intelligence differs from an adult’s in quality rather than in quantity. This means that children reason (think) differently from adults and see the world in different ways.
  • Children actively build up their knowledge about the world . They are not passive creatures waiting for someone to fill their heads with knowledge.
  • The best way to understand children’s reasoning is to see things from their point of view.

Piaget did not want to measure how well children could count, spell or solve problems as a way of grading their I.Q. What he was more interested in was the way in which fundamental concepts like the very idea of number , time, quantity, causality , justice , and so on emerged.

Piaget studied children from infancy to adolescence using naturalistic observation of his own three babies and sometimes controlled observation too. From these, he wrote diary descriptions charting their development.

He also used clinical interviews and observations of older children who were able to understand questions and hold conversations.

2. Piaget’s Theory Differs From Others In Several Ways:

Piaget’s (1936, 1950) theory of cognitive development explains how a child constructs a mental model of the world. He disagreed with the idea that intelligence was a fixed trait, and regarded cognitive development as a process that occurs due to biological maturation and interaction with the environment.

Children’s ability to understand, think about, and solve problems in the world develops in a stop-start, discontinuous manner (rather than gradual changes over time).

  • It is concerned with children, rather than all learners.
  • It focuses on development, rather than learning per se, so it does not address learning of information or specific behaviors.
  • It proposes discrete stages of development, marked by qualitative differences, rather than a gradual increase in number and complexity of behaviors, concepts, ideas, etc.

The goal of the theory is to explain the mechanisms and processes by which the infant, and then the child, develops into an individual who can reason and think using hypotheses.

To Piaget, cognitive development was a progressive reorganization of mental processes as a result of biological maturation and environmental experience.

Children construct an understanding of the world around them, then experience discrepancies between what they already know and what they discover in their environment.

Piaget claimed that knowledge cannot simply emerge from sensory experience; some initial structure is necessary to make sense of the world.

According to Piaget, children are born with a very basic mental structure (genetically inherited and evolved) on which all subsequent learning and knowledge are based.

Schemas are the basic building blocks of such cognitive models, and enable us to form a mental representation of the world.

Piaget (1952, p. 7) defined a schema as: “a cohesive, repeatable action sequence possessing component actions that are tightly interconnected and governed by a core meaning.”

In more simple terms, Piaget called the schema the basic building block of intelligent behavior – a way of organizing knowledge. Indeed, it is useful to think of schemas as “units” of knowledge, each relating to one aspect of the world, including objects, actions, and abstract (i.e., theoretical) concepts.

Wadsworth (2004) suggests that schemata (the plural of schema) be thought of as “index cards” filed in the brain, each one telling an individual how to react to incoming stimuli or information.

When Piaget talked about the development of a person’s mental processes, he was referring to increases in the number and complexity of the schemata that a person had learned.

When a child’s existing schemas are capable of explaining what it can perceive around it, it is said to be in a state of equilibrium, i.e., a state of cognitive (i.e., mental) balance.

Operations are more sophisticated mental structures which allow us to combine schemas in a logical (reasonable) way.

As children grow they can carry out more complex operations and begin to imagine hypothetical (imaginary) situations.

Apart from the schemas we are born with schemas and operations are learned through interaction with other people and the environment.

piaget operations

Piaget emphasized the importance of schemas in cognitive development and described how they were developed or acquired.

A schema can be defined as a set of linked mental representations of the world, which we use both to understand and to respond to situations. The assumption is that we store these mental representations and apply them when needed.

Examples of Schemas

A person might have a schema about buying a meal in a restaurant. The schema is a stored form of the pattern of behavior which includes looking at a menu, ordering food, eating it and paying the bill.

This is an example of a schema called a “script.” Whenever they are in a restaurant, they retrieve this schema from memory and apply it to the situation.

The schemas Piaget described tend to be simpler than this – especially those used by infants. He described how – as a child gets older – his or her schemas become more numerous and elaborate.

Piaget believed that newborn babies have a small number of innate schemas – even before they have had many opportunities to experience the world. These neonatal schemas are the cognitive structures underlying innate reflexes. These reflexes are genetically programmed into us.

For example, babies have a sucking reflex, which is triggered by something touching the baby’s lips. A baby will suck a nipple, a comforter (dummy), or a person’s finger. Piaget, therefore, assumed that the baby has a “sucking schema.”

Similarly, the grasping reflex which is elicited when something touches the palm of a baby’s hand, or the rooting reflex, in which a baby will turn its head towards something which touches its cheek, are innate schemas. Shaking a rattle would be the combination of two schemas, grasping and shaking.

4. The Process of Adaptation

Piaget also believed that a child developed as a result of two different influences: maturation, and interaction with the environment. The child develops mental structures (schemata) which enables him to solve problems in the environment.

Adaptation is the process by which the child changes its mental models of the world to match more closely how the world actually is.

Adaptation is brought about by the processes of assimilation (solving new experiences using existing schemata) and accommodation (changing existing schemata in order to solve new experiences).

The importance of this viewpoint is that the child is seen as an active participant in its own development rather than a passive recipient of either biological influences (maturation) or environmental stimulation.

When our existing schemas can explain what we perceive around us, we are in a state of equilibration . However, when we meet a new situation that we cannot explain it creates disequilibrium, this is an unpleasant sensation which we try to escape, and this gives us the motivation to learn.

According to Piaget, reorganization to higher levels of thinking is not accomplished easily. The child must “rethink” his or her view of the world. An important step in the process is the experience of cognitive conflict.

In other words, the child becomes aware that he or she holds two contradictory views about a situation and they both cannot be true. This step is referred to as disequilibrium .

piaget adaptation2

Jean Piaget (1952; see also Wadsworth, 2004) viewed intellectual growth as a process of adaptation (adjustment) to the world. This happens through assimilation, accommodation, and equilibration.

To get back to a state of equilibration, we need to modify our existing schemas to learn and adapt to the new situation.

This is done through the processes of accommodation and assimilation . This is how our schemas evolve and become more sophisticated. The processes of assimilation and accommodation are continuous and interactive.

5. Assimilation

Piaget defined assimilation as the cognitive process of fitting new information into existing cognitive schemas, perceptions, and understanding. Overall beliefs and understanding of the world do not change as a result of the new information.

Assimilation occurs when the new experience is not very different from previous experiences of a particular object or situation we assimilate the new situation by adding information to a previous schema.

This means that when you are faced with new information, you make sense of this information by referring to information you already have (information processed and learned previously) and trying to fit the new information into the information you already have.

  • Imagine a young child who has only ever seen small, domesticated dogs. When the child sees a cat for the first time, they might refer to it as a “dog” because it has four legs, fur, and a tail – features that fit their existing schema of a dog.
  • A person who has always believed that all birds can fly might label penguins as birds that can fly. This is because their existing schema or understanding of birds includes the ability to fly.
  • A 2-year-old child sees a man who is bald on top of his head and has long frizzy hair on the sides. To his father’s horror, the toddler shouts “Clown, clown” (Siegler et al., 2003).
  • If a baby learns to pick up a rattle he or she will then use the same schema (grasping) to pick up other objects.

6. Accommodation

Accommodation: when the new experience is very different from what we have encountered before we need to change our schemas in a very radical way or create a whole new schema.

Psychologist Jean Piaget defined accommodation as the cognitive process of revising existing cognitive schemas, perceptions, and understanding so that new information can be incorporated.

This happens when the existing schema (knowledge) does not work, and needs to be changed to deal with a new object or situation.

In order to make sense of some new information, you actually adjust information you already have (schemas you already have, etc.) to make room for this new information.

  • A baby tries to use the same schema for grasping to pick up a very small object. It doesn’t work. The baby then changes the schema by now using the forefinger and thumb to pick up the object.
  • A child may have a schema for birds (feathers, flying, etc.) and then they see a plane, which also flies, but would not fit into their bird schema.
  • In the “clown” incident, the boy’s father explained to his son that the man was not a clown and that even though his hair was like a clown’s, he wasn’t wearing a funny costume and wasn’t doing silly things to make people laugh. With this new knowledge, the boy was able to change his schema of “clown” and make this idea fit better to a standard concept of “clown”.
  • A person who grew up thinking all snakes are dangerous might move to an area where garden snakes are common and harmless. Over time, after observing and learning, they might accommodate their previous belief to understand that not all snakes are harmful.

7. Equilibration

Piaget believed that all human thought seeks order and is uncomfortable with contradictions and inconsistencies in knowledge structures. In other words, we seek “equilibrium” in our cognitive structures.

Equilibrium occurs when a child’s schemas can deal with most new information through assimilation. However, an unpleasant state of disequilibrium occurs when new information cannot be fitted into existing schemas (assimilation).

Piaget believed that cognitive development did not progress at a steady rate, but rather in leaps and bounds. Equilibration is the force which drives the learning process as we do not like to be frustrated and will seek to restore balance by mastering the new challenge (accommodation).

Once the new information is acquired the process of assimilation with the new schema will continue until the next time we need to make an adjustment to it.

Equilibration is a regulatory process that maintains a balance between assimilation and accommodation to facilitate cognitive growth. Think of it this way: We can’t merely assimilate all the time; if we did, we would never learn any new concepts or principles.

Everything new we encountered would just get put in the same few “slots” we already had. Neither can we accommodate all the time; if we did, everything we encountered would seem new; there would be no recurring regularities in our world. We’d be exhausted by the mental effort!

Jean Piaget

Applications to Education

Think of old black and white films that you’ve seen in which children sat in rows at desks, with ink wells, would learn by rote, all chanting in unison in response to questions set by an authoritarian old biddy like Matilda!

Children who were unable to keep up were seen as slacking and would be punished by variations on the theme of corporal punishment. Yes, it really did happen and in some parts of the world still does today.

Piaget is partly responsible for the change that occurred in the 1960s and for your relatively pleasurable and pain-free school days!

raked classroom1937

“Children should be able to do their own experimenting and their own research. Teachers, of course, can guide them by providing appropriate materials, but the essential thing is that in order for a child to understand something, he must construct it himself, he must re-invent it. Every time we teach a child something, we keep him from inventing it himself. On the other hand that which we allow him to discover by himself will remain with him visibly”. Piaget (1972, p. 27)

Plowden Report

Piaget (1952) did not explicitly relate his theory to education, although later researchers have explained how features of Piaget’s theory can be applied to teaching and learning.

Piaget has been extremely influential in developing educational policy and teaching practice. For example, a review of primary education by the UK government in 1966 was based strongly on Piaget’s theory. The result of this review led to the publication of the Plowden Report (1967).

In the 1960s the Plowden Committee investigated the deficiencies in education and decided to incorporate many of Piaget’s ideas into its final report published in 1967, even though Piaget’s work was not really designed for education.

The report makes three Piaget-associated recommendations:
  • Children should be given individual attention and it should be realized that they need to be treated differently.
  • Children should only be taught things that they are capable of learning
  • Children mature at different rates and the teacher needs to be aware of the stage of development of each child so teaching can be tailored to their individual needs.

“The report’s recurring themes are individual learning, flexibility in the curriculum, the centrality of play in children’s learning, the use of the environment, learning by discovery and the importance of the evaluation of children’s progress – teachers should “not assume that only what is measurable is valuable.”

Discovery learning – the idea that children learn best through doing and actively exploring – was seen as central to the transformation of the primary school curriculum.

How to teach

Within the classroom learning should be student-centered and accomplished through active discovery learning. The role of the teacher is to facilitate learning, rather than direct tuition.

Because Piaget’s theory is based upon biological maturation and stages, the notion of “readiness” is important. Readiness concerns when certain information or concepts should be taught.

According to Piaget’s theory, children should not be taught certain concepts until they have reached the appropriate stage of cognitive development.

According to Piaget (1958), assimilation and accommodation require an active learner, not a passive one, because problem-solving skills cannot be taught, they must be discovered.

Therefore, teachers should encourage the following within the classroom:
  • Educational programs should be designed to correspond to Piaget’s stages of development. Children in the concrete operational stage should be given concrete means to learn new concepts e.g. tokens for counting.
  • Devising situations that present useful problems, and create disequilibrium in the child.
  • Focus on the process of learning, rather than the end product of it. Instead of checking if children have the right answer, the teacher should focus on the student’s understanding and the processes they used to get to the answer.
  • Child-centered approach. Learning must be active (discovery learning). Children should be encouraged to discover for themselves and to interact with the material instead of being given ready-made knowledge.
  • Accepting that children develop at different rates so arrange activities for individual children or small groups rather than assume that all the children can cope with a particular activity.
  • Using active methods that require rediscovering or reconstructing “truths.”
  • Using collaborative, as well as individual activities (so children can learn from each other).
  • Evaluate the level of the child’s development so suitable tasks can be set.
  • Adapt lessons to suit the needs of the individual child (i.e. differentiated teaching).
  • Be aware of the child’s stage of development (testing).
  • Teach only when the child is ready. i.e. has the child reached the appropriate stage.
  • Providing support for the “spontaneous research” of the child.
  • Using collaborative, as well as individual activities.
  • Educators may use Piaget’s stages to design age-appropriate assessment tools and strategies.

Classroom Activities

Sensorimotor stage (0-2 years):.

Although most kids in this age range are not in a traditional classroom setting, they can still benefit from games that stimulate their senses and motor skills.

  • Object Permanence Games : Play peek-a-boo or hide toys under a blanket to help babies understand that objects still exist even when they can’t see them.
  • Sensory Play : Activities like water play, sand play, or playdough encourage exploration through touch.
  • Imitation : Children at this age love to imitate adults. Use imitation as a way to teach new skills.

Preoperational Stage (2-7 years):

  • Role Playing : Set up pretend play areas where children can act out different scenarios, such as a kitchen, hospital, or market.
  • Use of Symbols : Encourage drawing, building, and using props to represent other things.
  • Hands-on Activities : Children should interact physically with their environment, so provide plenty of opportunities for hands-on learning.
  • Egocentrism Activities : Use exercises that highlight different perspectives. For instance, having two children sit across from each other with an object in between and asking them what the other sees.

Concrete Operational Stage (7-11 years):

  • Classification Tasks : Provide objects or pictures to group, based on various characteristics.
  • Hands-on Experiments : Introduce basic science experiments where they can observe cause and effect, like a simple volcano with baking soda and vinegar.
  • Logical Games : Board games, puzzles, and logic problems help develop their thinking skills.
  • Conservation Tasks : Use experiments to showcase that quantity doesn’t change with alterations in shape, such as the classic liquid conservation task using different shaped glasses.

Formal Operational Stage (11 years and older):

  • Hypothesis Testing : Encourage students to make predictions and test them out.
  • Abstract Thinking : Introduce topics that require abstract reasoning, such as algebra or ethical dilemmas.
  • Problem Solving : Provide complex problems and have students work on solutions, integrating various subjects and concepts.
  • Debate and Discussion : Encourage group discussions and debates on abstract topics, highlighting the importance of logic and evidence.
  • Feedback and Questioning : Use open-ended questions to challenge students and promote higher-order thinking. For instance, rather than asking, “Is this the right answer?”, ask, “How did you arrive at this conclusion?”

While Piaget’s stages offer a foundational framework, they are not universally experienced in the same way by all children.

Social identities play a critical role in shaping cognitive development, necessitating a more nuanced and culturally responsive approach to understanding child development.

Piaget’s stages may manifest differently based on social identities like race, gender, and culture:
  • Race & Teacher Interactions : A child’s race can influence teacher expectations and interactions. For example, racial biases can lead to children of color being perceived as less capable or more disruptive, influencing their cognitive challenges and supports.
  • Racial and Cultural Stereotypes : These can affect a child’s self-perception and self-efficacy . For instance, stereotypes about which racial or cultural groups are “better” at certain subjects can influence a child’s self-confidence and, subsequently, their engagement in that subject.
  • Gender & Peer Interactions : Children learn gender roles from their peers. Boys might be mocked for playing “girl games,” and girls might be excluded from certain activities, influencing their cognitive engagements.
  • Language : Multilingual children might navigate the stages differently, especially if their home language differs from their school language. The way concepts are framed in different languages can influence cognitive processing. Cultural idioms and metaphors can shape a child’s understanding of concepts and their ability to use symbolic representation, especially in the pre-operational stage.

Curriculum Development

According to Piaget, children’s cognitive development is determined by a process of maturation which cannot be altered by tuition so education should be stage-specific.

For example, a child in the concrete operational stage should not be taught abstract concepts and should be given concrete aid such as tokens to count with.

According to Piaget children learn through the process of accommodation and assimilation so the role of the teacher should be to provide opportunities for these processes to occur such as new material and experiences that challenge the children’s existing schemas.

Furthermore, according to this theory, children should be encouraged to discover for themselves and to interact with the material instead of being given ready-made knowledge.

Curricula need to be developed that take into account the age and stage of thinking of the child. For example there is no point in teaching abstract concepts such as algebra or atomic structure to children in primary school.

Curricula also need to be sufficiently flexible to allow for variations in the ability of different students of the same age. In Britain, the National Curriculum and Key Stages broadly reflect the stages that Piaget laid down.

For example, egocentrism dominates a child’s thinking in the sensorimotor and preoperational stages. Piaget would therefore predict that using group activities would not be appropriate since children are not capable of understanding the views of others.

However, Smith et al. (1998), point out that some children develop earlier than Piaget predicted and that by using group work children can learn to appreciate the views of others in preparation for the concrete operational stage.

The national curriculum emphasizes the need to use concrete examples in the primary classroom.

Shayer (1997), reported that abstract thought was necessary for success in secondary school (and co-developed the CASE system of teaching science). Recently the National curriculum has been updated to encourage the teaching of some abstract concepts towards the end of primary education, in preparation for secondary courses. (DfEE, 1999).

Child-centered teaching is regarded by some as a child of the ‘liberal sixties.’ In the 1980s the Thatcher government introduced the National Curriculum in an attempt to move away from this and bring more central government control into the teaching of children.

So, although the British National Curriculum in some ways supports the work of Piaget, (in that it dictates the order of teaching), it can also be seen as prescriptive to the point where it counters Piaget’s child-oriented approach.

However, it does still allow for flexibility in teaching methods, allowing teachers to tailor lessons to the needs of their students.

Social Media (Digital Learning)

Jean Piaget could not have anticipated the expansive digital age we now live in.

Today, knowledge dissemination and creation are democratized by the Internet, with platforms like blogs, wikis, and social media allowing for vast collaboration and shared knowledge. This development has prompted a reimagining of the future of education.

Classrooms, traditionally seen as primary sites of learning, are being overshadowed by the rise of mobile technologies and platforms like MOOCs (Passey, 2013).

The millennial generation, defined as the first to grow up with cable TV, the internet, and cell phones, relies heavily on technology.

They view it as an integral part of their identity, with most using it extensively in their daily lives, from keeping in touch with loved ones to consuming news and entertainment (Nielsen, 2014).

Social media platforms offer a dynamic environment conducive to Piaget’s principles. These platforms allow for interactions that nurture knowledge evolution through cognitive processes like assimilation and accommodation.

They emphasize communal interaction and shared activity, fostering both cognitive and socio-cultural constructivism. This shared activity promotes understanding and exploration beyond individual perspectives, enhancing social-emotional learning (Gehlbach, 2010).

A standout advantage of social media in an educational context is its capacity to extend beyond traditional classroom confines. As the material indicates, these platforms can foster more inclusive learning, bridging diverse learner groups.

This inclusivity can equalize learning opportunities, potentially diminishing biases based on factors like race or socio-economic status, resonating with Kegan’s (1982) concept of “recruitability.”

However, there are challenges. While the potential of social media in learning is vast, its practical application necessitates intention and guidance. Cuban, Kirkpatrick, and Peck (2001) note that certain educators and students are hesitant about integrating social media into educational contexts.

This hesitancy can stem from technological complexities or potential distractions. Yet, when harnessed effectively, social media can provide a rich environment for collaborative learning and interpersonal development, fostering a deeper understanding of content.

In essence, the rise of social media aligns seamlessly with constructivist philosophies. Social media platforms act as tools for everyday cognition, merging daily social interactions with the academic world, and providing avenues for diverse, interactive, and engaging learning experiences.

Applications to Parenting

Parents can use Piaget’s stages to have realistic developmental expectations of their children’s behavior and cognitive capabilities.

For instance, understanding that a toddler is in the pre-operational stage can help parents be patient when the child is egocentric.

Play Activities

Recognizing the importance of play in cognitive development, many parents provide toys and games suited for their child’s developmental stage.

Parents can offer activities that are slightly beyond their child’s current abilities, leveraging Vygotsky’s concept of the “Zone of Proximal Development,” which complements Piaget’s ideas.

  • Peek-a-boo : Helps with object permanence.
  • Texture Touch : Provide different textured materials (soft, rough, bumpy, smooth) for babies to touch and feel.
  • Sound Bottles : Fill small bottles with different items like rice, beans, bells, and have children shake and listen to the different sounds.
  • Memory Games : Using cards with pictures, place them face down, and ask students to find matching pairs.
  • Role Playing and Pretend Play : Let children act out roles or stories that enhance symbolic thinking. Encourage symbolic play with dress-up clothes, playsets, or toy cash registers. Provide prompts or scenarios to extend their imagination.
  • Story Sequencing : Give children cards with parts of a story and have them arranged in the correct order.
  • Number Line Jumps : Create a number line on the floor with tape. Ask students to jump to the correct answer for math problems.
  • Classification Games : Provide a mix of objects and ask students to classify them based on different criteria (e.g., color, size, shape).
  • Logical Puzzle Games : Games that involve problem-solving using logic, such as simple Sudoku puzzles or logic grid puzzles.
  • Debate and Discussion : Provide a topic and let students debate on pros and cons. This promotes abstract thinking and logical reasoning.
  • Hypothesis Testing Games : Present a scenario and have students come up with hypotheses and ways to test them.
  • Strategy Board Games : Games like chess, checkers, or Settlers of Catan can help in developing strategic and forward-thinking skills.

Critical Evaluation

  • The influence of Piaget’s ideas on developmental psychology has been enormous. He changed how people viewed the child’s world and their methods of studying children.

He was an inspiration to many who came after and took up his ideas. Piaget’s ideas have generated a huge amount of research which has increased our understanding of cognitive development.

  • Piaget (1936) was one of the first psychologists to make a systematic study of cognitive development. His contributions include a stage theory of child cognitive development, detailed observational studies of cognition in children, and a series of simple but ingenious tests to reveal different cognitive abilities.
  • His ideas have been of practical use in understanding and communicating with children, particularly in the field of education (re: Discovery Learning). Piaget’s theory has been applied across education.
  • According to Piaget’s theory, educational programs should be designed to correspond to the stages of development.
  • Are the stages real? Vygotsky and Bruner would rather not talk about stages at all, preferring to see development as a continuous process. Others have queried the age ranges of the stages. Some studies have shown that progress to the formal operational stage is not guaranteed.

For example, Keating (1979) reported that 40-60% of college students fail at formal operation tasks, and Dasen (1994) states that only one-third of adults ever reach the formal operational stage.

The fact that the formal operational stage is not reached in all cultures and not all individuals within cultures suggests that it might not be biologically based.

  • According to Piaget, the rate of cognitive development cannot be accelerated as it is based on biological processes however, direct tuition can speed up the development which suggests that it is not entirely based on biological factors.
  • Because Piaget concentrated on the universal stages of cognitive development and biological maturation, he failed to consider the effect that the social setting and culture may have on cognitive development.

Cross-cultural studies show that the stages of development (except the formal operational stage) occur in the same order in all cultures suggesting that cognitive development is a product of a biological process of maturation.

However, the age at which the stages are reached varies between cultures and individuals which suggests that social and cultural factors and individual differences influence cognitive development.

Dasen (1994) cites studies he conducted in remote parts of the central Australian desert with 8-14-year-old Indigenous Australians. He gave them conservation of liquid tasks and spatial awareness tasks. He found that the ability to conserve came later in the Aboriginal children, between ages of 10 and 13 (as opposed to between 5 and 7, with Piaget’s Swiss sample).

However, he found that spatial awareness abilities developed earlier amongst the Aboriginal children than the Swiss children. Such a study demonstrates cognitive development is not purely dependent on maturation but on cultural factors too – spatial awareness is crucial for nomadic groups of people.

Vygotsky , a contemporary of Piaget, argued that social interaction is crucial for cognitive development. According to Vygotsky the child’s learning always occurs in a social context in cooperation with someone more skillful (MKO). This social interaction provides language opportunities and Vygotsky considered language the foundation of thought.

  • Piaget’s methods (observation and clinical interviews) are more open to biased interpretation than other methods. Piaget made careful, detailed naturalistic observations of children, and from these, he wrote diary descriptions charting their development. He also used clinical interviews and observations of older children who were able to understand questions and hold conversations.

Because Piaget conducted the observations alone the data collected are based on his own subjective interpretation of events. It would have been more reliable if Piaget conducted the observations with another researcher and compared the results afterward to check if they are similar (i.e., have inter-rater reliability).

Although clinical interviews allow the researcher to explore data in more depth, the interpretation of the interviewer may be biased.

For example, children may not understand the question/s, they have short attention spans, they cannot express themselves very well, and may be trying to please the experimenter. Such methods meant that Piaget may have formed inaccurate conclusions.

  • As several studies have shown Piaget underestimated the abilities of children because his tests were sometimes confusing or difficult to understand (e.g., Hughes , 1975).

Piaget failed to distinguish between competence (what a child is capable of doing) and performance (what a child can show when given a particular task). When tasks were altered, performance (and therefore competence) was affected. Therefore, Piaget might have underestimated children’s cognitive abilities.

For example, a child might have object permanence (competence) but still not be able to search for objects (performance). When Piaget hid objects from babies he found that it wasn’t till after nine months that they looked for it.

However, Piaget relied on manual search methods – whether the child was looking for the object or not.

Later, researchers such as Baillargeon and Devos (1991) reported that infants as young as four months looked longer at a moving carrot that didn’t do what it expected, suggesting they had some sense of permanence, otherwise they wouldn’t have had any expectation of what it should or shouldn’t do.

  • The concept of schema is incompatible with the theories of Bruner (1966) and Vygotsky (1978). Behaviorism would also refute Piaget’s schema theory because is cannot be directly observed as it is an internal process. Therefore, they would claim it cannot be objectively measured.
  • Piaget studied his own children and the children of his colleagues in Geneva to deduce general principles about the intellectual development of all children. His sample was very small and composed solely of European children from families of high socio-economic status. Researchers have, therefore, questioned the generalisability of his data.
  • For Piaget, language is considered secondary to action, i.e., thought precedes language. The Russian psychologist Lev Vygotsky (1978) argues that the development of language and thought go together and that the origin of reasoning has more to do with our ability to communicate with others than with our interaction with the material world.

Piaget’s Theory vs Vygotsky

Piaget maintains that cognitive development stems largely from independent explorations in which children construct knowledge of their own.

Whereas Vygotsky argues that children learn through social interactions, building knowledge by learning from more knowledgeable others such as peers and adults. In other words, Vygotsky believed that culture affects cognitive development.

These factors lead to differences in the education style they recommend: Piaget would argue for the teacher to provide opportunities that challenge the children’s existing schemas and for children to be encouraged to discover for themselves.

Alternatively, Vygotsky would recommend that teachers assist the child to progress through the zone of proximal development by using scaffolding.

However, both theories view children as actively constructing their own knowledge of the world; they are not seen as just passively absorbing knowledge.

They also agree that cognitive development involves qualitative changes in thinking, not only a matter of learning more things.

What is cognitive development?

Cognitive development is how a person’s ability to think, learn, remember, problem-solve, and make decisions changes over time.

This includes the growth and maturation of the brain, as well as the acquisition and refinement of various mental skills and abilities.

Cognitive development is a major aspect of human development, and both genetic and environmental factors heavily influence it. Key domains of cognitive development include attention, memory, language skills, logical reasoning, and problem-solving.

Various theories, such as those proposed by Jean Piaget and Lev Vygotsky, provide different perspectives on how this complex process unfolds from infancy through adulthood.

What are the 4 stages of Piaget’s theory?

Piaget divided children’s cognitive development into four stages; each of the stages represents a new way of thinking and understanding the world.

He called them (1) sensorimotor intelligence , (2) preoperational thinking , (3) concrete operational thinking , and (4) formal operational thinking . Each stage is correlated with an age period of childhood, but only approximately.

According to Piaget, intellectual development takes place through stages that occur in a fixed order and which are universal (all children pass through these stages regardless of social or cultural background).

Development can only occur when the brain has matured to a point of “readiness”.

What are some of the weaknesses of Piaget’s theory?

Cross-cultural studies show that the stages of development (except the formal operational stage) occur in the same order in all cultures suggesting that cognitive development is a product of a biological maturation process.

However, the age at which the stages are reached varies between cultures and individuals, suggesting that social and cultural factors and individual differences influence cognitive development.

What are Piaget’s concepts of schemas?

Schemas are mental structures that contain all of the information relating to one aspect of the world around us.

According to Piaget, we are born with a few primitive schemas, such as sucking, which give us the means to interact with the world.

These are physical, but as the child develops, they become mental schemas. These schemas become more complex with experience.

Baillargeon, R., & DeVos, J. (1991). Object permanence in young infants: Further evidence . Child development , 1227-1246.

Bruner, J. S. (1966). Toward a theory of instruction. Cambridge, Mass.: Belkapp Press.

Cuban, L., Kirkpatrick, H., & Peck, C. (2001). High access and low use of technologies in high school classrooms: Explaining an apparent paradox.  American Educational Research Journal ,  38 (4), 813-834.

Dasen, P. (1994). Culture and cognitive development from a Piagetian perspective. In W .J. Lonner & R.S. Malpass (Eds.), Psychology and culture (pp. 145–149). Boston, MA: Allyn and Bacon.

Gehlbach, H. (2010). The social side of school: Why teachers need social psychology.  Educational Psychology Review ,  22 , 349-362.

Hughes, M. (1975). Egocentrism in preschool children . Unpublished doctoral dissertation. Edinburgh University.

Inhelder, B., & Piaget, J. (1958). The growth of logical thinking from childhood to adolescence . New York: Basic Books.

Keating, D. (1979). Adolescent thinking. In J. Adelson (Ed.), Handbook of adolescent psychology (pp. 211-246). New York: Wiley.

Kegan, R. (1982).  The evolving self: Problem and process in human development . Harvard University Press.

Nielsen. 2014. “Millennials: Technology = Social Connection.” http://www.nielsen.com/content/corporate/us/en/insights/news/2014/millennials-technology-social-connecti on.html.

Passey, D. (2013).  Inclusive technology enhanced learning: Overcoming cognitive, physical, emotional, and geographic challenges . Routledge.

Piaget, J. (1932). The moral judgment of the child . London: Routledge & Kegan Paul.

Piaget, J. (1936). Origins of intelligence in the child. London: Routledge & Kegan Paul.

Piaget, J. (1945). Play, dreams and imitation in childhood . London: Heinemann.

Piaget, J. (1957). Construction of reality in the child. London: Routledge & Kegan Paul.

Piaget, J., & Cook, M. T. (1952). The origins of intelligence in children . New York, NY: International University Press.

Piaget, J. (1981).  Intelligence and affectivity: Their relationship during child development.(Trans & Ed TA Brown & CE Kaegi) . Annual Reviews.

Plowden, B. H. P. (1967). Children and their primary schools: A report (Research and Surveys). London, England: HM Stationery Office.

Siegler, R. S., DeLoache, J. S., & Eisenberg, N. (2003). How children develop . New York: Worth.

Vygotsky, L. S. (1978). Mind in society: The development of higher psychological processes . Cambridge, MA: Harvard University Press.

Wadsworth, B. J. (2004). Piaget’s theory of cognitive and affective development: Foundations of constructivism . New York: Longman.

Further Reading

  • BBC Radio Broadcast about the Three Mountains Study
  • Piagetian stages: A critical review
  • Bronfenbrenner’s Ecological Systems Theory

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Child cognitive development is a fascinating and complex process that entails the growth of a child’s mental abilities, including their ability to think, learn, and solve problems. This development occurs through a series of stages that can vary among individuals. As children progress through these stages, their cognitive abilities and skills are continuously shaped by a myriad of factors such as genetics, environment, and experiences. Understanding the nuances of child cognitive development is essential for parents, educators, and professionals alike, as it provides valuable insight into supporting the growth of the child’s intellect and overall well-being.

Throughout the developmental process, language and communication play a vital role in fostering a child’s cognitive abilities . As children acquire language skills, they also develop their capacity for abstract thought, reasoning, and problem-solving. It is crucial for parents and caregivers to be mindful of potential developmental delays, as early intervention can greatly benefit the child’s cognitive development. By providing stimulating environments, nurturing relationships, and embracing diverse learning opportunities, adults can actively foster healthy cognitive development in children.

Key Takeaways

  • Child cognitive development involves the growth of mental abilities and occurs through various stages.
  • Language and communication are significant factors in cognitive development , shaping a child’s ability for abstract thought and problem-solving.
  • Early intervention and supportive environments can play a crucial role in fostering healthy cognitive development in children.

Child Cognitive Development Stages

Child cognitive development is a crucial aspect of a child’s growth and involves the progression of their thinking, learning, and problem-solving abilities. Swiss psychologist Jean Piaget developed a widely recognized theory that identifies four major stages of cognitive development in children.

Sensorimotor Stage

The Sensorimotor Stage occurs from birth to about 2 years old. During this stage, infants and newborns learn to coordinate their senses (sight, sound, touch, etc.) with their motor abilities. Their understanding of the world begins to develop through their physical interactions and experiences. Some key milestones in this stage include object permanence, which is the understanding that an object still exists even when it’s not visible, and the development of intentional actions.

Preoperational Stage

The Preoperational Stage takes place between the ages of 2 and 7 years old. In this stage, children start to think symbolically, and their language capabilities rapidly expand. They also develop the ability to use mental images, words, and gestures to represent the world around them. However, their thinking is largely egocentric, which means they struggle to see things from other people’s perspectives. During this stage, children start to engage in pretend play and begin to grasp the concept of conservation, recognizing that certain properties of objects (such as quantity or volume) remain the same even if their appearance changes.

Concrete Operational Stage

The Concrete Operational Stage occurs between the ages of 7 and 12 years old. At this stage, children’s cognitive development progresses to more logical and organized ways of thinking. They can now consider multiple aspects of a problem and better understand the relationship between cause and effect . Furthermore, children become more adept at understanding other people’s viewpoints, and they can perform basic mathematical operations and understand the principles of classification and seriation.

Formal Operational Stage

Lastly, the Formal Operational Stage typically begins around 12 years old and extends into adulthood. In this stage, children develop the capacity for abstract thinking and can consider hypothetical situations and complex reasoning. They can also perform advanced problem-solving and engage in systematic scientific inquiry. This stage allows individuals to think about abstract concepts, their own thought processes, and understand the world in deeper, more nuanced ways.

By understanding these stages of cognitive development, you can better appreciate the complex growth process that children undergo as their cognitive abilities transform and expand throughout their childhood.

Key Factors in Cognitive Development

Genetics and brain development.

Genetics play a crucial role in determining a child’s cognitive development. A child’s brain development is heavily influenced by genetic factors, which also determine their cognitive potential , abilities, and skills. It is important to understand that a child’s genes do not solely dictate their cognitive development – various environmental and experiential factors contribute to shaping their cognitive abilities as they grow and learn.

Environmental Influences

The environment in which a child grows up has a significant impact on their cognitive development. Exposure to various experiences is essential for a child to develop essential cognitive skills such as problem-solving, communication, and critical thinking. Factors that can have a negative impact on cognitive development include exposure to toxins, extreme stress, trauma, abuse, and addiction issues, such as alcoholism in the family.

Nutrition and Health

Maintaining good nutrition and health is vital for a child’s cognitive development. Adequate nutrition is essential for the proper growth and functioning of the brain . Key micronutrients that contribute to cognitive development include iron, zinc, and vitamins A, C, D, and B-complex vitamins. Additionally, a child’s overall health, including physical fitness and immunity, ensures they have the energy and resources to engage in learning activities and achieve cognitive milestones effectively .

Emotional and Social Factors

Emotional well-being and social relationships can also greatly impact a child’s cognitive development. A supportive, nurturing, and emotionally healthy environment allows children to focus on learning and building cognitive skills. Children’s emotions and stress levels can impact their ability to learn and process new information. Additionally, positive social interactions help children develop important cognitive skills such as empathy, communication, and collaboration.

In summary, cognitive development in children is influenced by various factors, including genetics, environmental influences, nutrition, health, and emotional and social factors. Considering these factors can help parents, educators, and policymakers create suitable environments and interventions for promoting optimal child development.

Language and Communication Development

Language skills and milestones.

Children’s language development is a crucial aspect of their cognitive growth. They begin to acquire language skills by listening and imitating sounds they hear from their environment. As they grow, they start to understand words and form simple sentences.

  • Infants (0-12 months): Babbling, cooing, and imitating sounds are common during this stage. They can also identify their name by the end of their first year. Facial expressions play a vital role during this period, as babies learn to respond to emotions.
  • Toddlers (1-3 years): They rapidly learn new words and form simple sentences. They engage more in spoken communication, constantly exploring their language environment.
  • Preschoolers (3-5 years): Children expand their vocabulary, improve grammar, and begin participating in more complex conversations.

It’s essential to monitor children’s language development and inform their pediatrician if any delays or concerns arise.

Nonverbal Communication

Nonverbal communication contributes significantly to children’s cognitive development. They learn to interpret body language, facial expressions, and gestures long before they can speak. Examples of nonverbal communication in children include:

  • Eye contact: Maintaining eye contact while interacting helps children understand emotions and enhances communication.
  • Gestures: Pointing, waving goodbye, or using hand signs provide alternative ways for children to communicate their needs and feelings.
  • Body language: Posture, body orientation, and movement give clues about a child’s emotions and intentions.

Teaching children to understand and use nonverbal communication supports their cognitive and social development.

Parent and Caregiver Interaction

Supportive interaction from parents and caregivers plays a crucial role in children’s language and communication development. These interactions can improve children’s language skills and overall cognitive abilities . Some ways parents and caregivers can foster language development are:

  • Reading together: From an early age, reading books to children enhance their vocabulary and listening skills.
  • Encouraging communication: Ask open-ended questions and engage them in conversations to build their speaking skills.
  • Using rich vocabulary: Expose children to a variety of words and phrases, promoting language growth and understanding.

By actively engaging in children’s language and communication development, parents and caregivers can nurture cognitive, emotional, and social growth.

Cognitive Abilities and Skills

Cognitive abilities are the mental skills that children develop as they grow. These skills are essential for learning, adapting, and thriving in modern society. In this section, we will discuss various aspects of cognitive development, including reasoning and problem-solving, attention and memory, decision-making and executive function, as well as academic and cognitive milestones.

Reasoning and Problem Solving

Reasoning is the ability to think logically and make sense of the world around us. It’s essential for a child’s cognitive development, as it enables them to understand the concept of object permanence , recognize patterns, and classify objects. Problem-solving skills involve using these reasoning abilities to find solutions to challenges they encounter in daily life .

Children develop essential skills like:

  • Logical reasoning : The ability to deduce conclusions from available information.
  • Perception: Understanding how objects relate to one another in their environment.
  • Schemes: Organizing thoughts and experiences into mental categories.

Attention and Memory

Attention refers to a child’s ability to focus on specific tasks, objects, or information, while memory involves retaining and recalling information. These cognitive abilities play a critical role in children’s learning and academic performance . Working memory is a vital component of learning, as it allows children to hold and manipulate information in their minds while solving problems and engaging with new tasks.

  • Attention: Focuses on relevant tasks and information while ignoring distractions.
  • Memory: Retains and retrieves information when needed.

Decision-Making and Executive Function

Decision-making is the process of making choices among various alternatives, while executive function refers to the higher-order cognitive processes that enable children to plan, organize, and adapt in complex situations. Executive function encompasses components such as:

  • Inhibition: Self-control and the ability to resist impulses.
  • Cognitive flexibility: Adapting to new information or changing circumstances.
  • Planning: Setting goals and devising strategies to achieve them.

Academic and Cognitive Milestones

Children’s cognitive development is closely linked to their academic achievement. As they grow, they achieve milestones in various cognitive domains that form the foundation for their future learning. Some of these milestones include:

  • Language skills: Developing vocabulary, grammar, and sentence structure.
  • Reading and mathematics: Acquiring the ability to read and comprehend text, as well as understanding basic mathematical concepts and operations.
  • Scientific thinking: Developing an understanding of cause-and-effect relationships and forming hypotheses.

Healthy cognitive development is essential for a child’s success in school and life. By understanding and supporting the development of their cognitive abilities, we can help children unlock their full potential and prepare them for a lifetime of learning and growth.

Developmental Delays and Early Intervention

Identifying developmental delays.

Developmental delays in children can be identified by monitoring their progress in reaching cognitive, linguistic, physical, and social milestones. Parents and caregivers should be aware of developmental milestones that are generally expected to be achieved by children at different ages, such as 2 months, 4 months, 6 months, 9 months, 18 months, 1 year, 2 years, 3 years, 4 years, and 5 years. Utilizing resources such as the “Learn the Signs. Act Early.” program can help parents and caregivers recognize signs of delay early in a child’s life.

Resources and Support for Parents

There are numerous resources available for parents and caregivers to find information on developmental milestones and to learn about potential developmental delays, including:

  • Learn the Signs. Act Early : A CDC initiative that provides pdf checklists of milestones and resources for identifying delays.
  • Parental support groups : Local and online communities dedicated to providing resources and fostering connections between families experiencing similar challenges.

Professional Evaluations and Intervention Strategies

If parents or caregivers suspect a developmental delay, it is crucial to consult with healthcare professionals or specialists who can conduct validated assessments of the child’s cognitive and developmental abilities. Early intervention strategies, such as the ones used in broad-based early intervention programs , have shown significant positive impacts on children with developmental delays to improve cognitive development and outcomes.

Professional evaluations may include:

  • Pediatricians : Primary healthcare providers who can monitor a child’s development and recommend further assessments when needed.
  • Speech and language therapists : Professionals who assist children with language and communication deficits.
  • Occupational therapists : Experts in helping children develop or improve on physical and motor skills, as well as social and cognitive abilities.

Depending on the severity and nature of the delays, interventions may involve:

  • Individualized support : Tailored programs or therapy sessions specifically developed for the child’s needs.
  • Group sessions : Opportunities for children to learn from and interact with other children experiencing similar challenges.
  • Family involvement : Parents and caregivers learning support strategies to help the child in their daily life.

Fostering Healthy Cognitive Development

Play and learning opportunities.

Encouraging play is crucial for fostering healthy cognitive development in children . Provide a variety of age-appropriate games, puzzles, and creative activities that engage their senses and stimulate curiosity. For example, introduce building blocks and math games for problem-solving skills, and crossword puzzles to improve vocabulary and reasoning abilities.

Playing with others also helps children develop social skills and better understand facial expressions and emotions. Provide opportunities for cooperative play, where kids can work together to achieve a common goal, and open-ended play with no specific rules to boost creativity.

Supportive Home Environment

A nurturing and secure home environment encourages healthy cognitive growth. Be responsive to your child’s needs and interests, involving them in everyday activities and providing positive reinforcement. Pay attention to their emotional well-being and create a space where they feel safe to ask questions and explore their surroundings.

Promoting Independence and Decision-Making

Support independence by allowing children to make decisions about their playtime, activities, and daily routines. Encourage them to take age-appropriate responsibilities and make choices that contribute to self-confidence and autonomy. Model problem-solving strategies and give them opportunities to practice these skills during play, while also guiding them when necessary.

Healthy Lifestyle Habits

Promote a well-rounded lifestyle, including:

  • Sleep : Ensure children get adequate and quality sleep by establishing a consistent bedtime routine.
  • Hydration : Teach the importance of staying hydrated by offering water frequently, especially during play and physical activities.
  • Screen time : Limit exposure to electronic devices and promote alternative activities for toddlers and older kids.
  • Physical activity : Encourage children to engage in active play and exercise to support neural development and overall health .

Frequently Asked Questions

What are the key stages of child cognitive development.

Child cognitive development can be divided into several key stages based on Piaget’s theory of cognitive development . These stages include the sensorimotor stage (birth to 2 years), preoperational stage (2-7 years), concrete operational stage (7-11 years), and formal operational stage (11 years and beyond). Every stage represents a unique period of cognitive growth, marked by the development of new skills, thought processes, and understanding of the world.

What factors influence cognitive development in children?

Several factors contribute to individual differences in child cognitive development, such as genetic and environmental factors. Socioeconomic status, access to quality education, early home environment, and parental involvement all play a significant role in determining cognitive growth. In addition, children’s exposure to diverse learning experiences, adequate nutrition, and mental health also influence overall cognitive performance .

How do cognitive skills vary during early childhood?

Cognitive skills in early childhood evolve as children progress through various stages . During the sensorimotor stage, infants develop fundamental skills such as object permanence. The preoperational stage is characterized by the development of symbolic thought, language, and imaginative play. Children then enter the concrete operational stage, acquiring the ability to think logically and solve problems. Finally, in the formal operational stage, children develop abstract reasoning abilities, complex problem-solving skills and metacognitive awareness.

What are common examples of cognitive development?

Examples of cognitive development include the acquisition of language and vocabulary, the development of problem-solving skills, and the ability to engage in logical reasoning. Additionally, memory, attention, and spatial awareness are essential aspects of cognitive development. Children may demonstrate these skills through activities like puzzle-solving, reading, and mathematics.

How do cognitive development theories explain children’s learning?

Piaget’s cognitive development theory suggests that children learn through active exploration, constructing knowledge based on their experiences and interactions with the world. In contrast, Vygotsky’s sociocultural theory emphasizes the role of social interaction and cultural context in learning. Both theories imply that cognitive development is a dynamic and evolving process, influenced by various environmental and psychological factors.

Why is it essential to support cognitive development in early childhood?

Supporting cognitive development in early childhood is critical because it lays a strong foundation for future academic achievement, social-emotional development, and lifelong learning. By providing children with diverse and enriching experiences, caregivers and educators can optimize cognitive growth and prepare children to face the challenges of today’s complex world. Fostering cognitive development early on helps children develop resilience, adaptability, and critical thinking skills essential for personal and professional success.

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How to Create a Personal Development Plan: 3 Examples

Personal Development Plan

For successful change, it is vital that the client remains engaged, recognizing and identifying with the goals captured inside and outside sessions. A personal development plan (PDP) creates a focus for development while offering a guide for life and future success (Starr, 2021).

This article introduces and explores the value of personal development plans, offering tools, worksheets, and approaches to boost self-reflection and self-improvement.

Before you continue, we thought you might like to download our three Goal Achievement Exercises for free . These detailed, science-based exercises will help you or your clients create actionable goals and master techniques to create lasting behavior change.

This Article Contains

What is personal development 7 theories, coaching in personal development and growth, how to create a personal development plan, 3 examples of personal development plans, defining goals and objectives: 10 tips and tools, fostering personal development skills, 3 inspiring books to read on the topic, resources from positivepsychology.com, a take-home message, frequently asked questions.

Personal development is a fundamental concept in psychology and encompasses the lifelong process of self-improvement, self-awareness, and personal growth. Crucial to coaching and counseling, it aims to enhance various aspects of clients’ lives, including their emotional wellbeing, relationships, careers, and overall happiness (Cox, 2018; Starr, 2021).

Several psychological models underpin and support transformation. Together, they help us understand personal development in our clients and the mechanisms and approaches available to make positive life changes (Cox, 2018; Passmore, 2021).

The following psychological theories and frameworks underpin and influence the approach a mental health professional adopts.

1. Maslow’s hierarchy of needs

As a proponent of the humanistic or person-centered approach to helping people, Abraham Maslow (1970) suggested that individuals have a hierarchy of needs. Simply put, they begin with basic physiological and safety needs and progress through psychological and self-fulfillment needs.

Personal development is often found in or recognized by the pursuit of higher-level needs, such as self-esteem and self-actualization (Cox, 2018).

2. Erikson’s psychosocial development

Erik Erikson (1963) mapped out a series of eight psychosocial development stages that individuals go through across their lifespan.

Each one involves challenges and crises that once successfully navigated, contribute to personal growth and identity development.

3. Piaget’s cognitive development

The biologist and epistemologist Jean Piaget (1959) focused on cognitive development in children and how they construct their understanding of the world.

We can draw on insights from Piaget’s stages of cognitive development, including intellectual growth and adaptability, to inform our own and others’ personal development (Illeris, 2018).

4. Bandura’s social cognitive theory

Albert Bandura’s (1977) theory highlights the role of social learning and self-efficacy in personal development. It emphasizes that individuals can learn and grow through observation, imitation, and belief in their ability to effect change.

5. Self-determination theory

Ryan and Deci’s (2018) motivational self-determination theory recognizes the importance of autonomy, competence, and relatedness in personal development.

Their approach suggests that individuals are more likely to experience growth and wellbeing when such basic psychological needs are met.

6. Positive psychology

Positive psychology , developed by Martin Seligman (2011) and others, focuses on strengths, wellbeing, and the pursuit of happiness.

Seligman’s PERMA model offers a framework for personal development that emphasizes identifying and using our strengths while cultivating positive emotions and experiences (Lomas et al., 2014).

7. Cognitive-Behavioral Theory (CBT)

Developed by Aaron Beck (Beck & Haigh, 2014) and Albert Ellis (2000), CBT explores the relationship between thoughts, emotions, and behavior.

As such, the theory provides practical techniques for personal development, helping individuals identify and challenge negative thought patterns and behaviors (Beck, 2011).

Theories like the seven mentioned above offer valuable insights into many of the psychological processes underlying personal development. They provide a sound foundation for coaches and counselors to support their clients and help them better understand themselves, their motivations, and the paths they can take to foster positive change in their lives (Cox, 2018).

Coaching in Personal Development

The client–coach relationship is significant to successful growth and goal achievement.

Typically, the coach will focus on the following (Cox, 2018):

  • Actualizing tendency This supports a “universal human motivation resulting in growth, development and autonomy of the individual” (Cox, 2018, p. 53).
  • Building a relationship facilitating change Trust clients to find their own way while displaying empathy, congruence, and unconditional positive regard . The coach’s “outward responses consistently match their inner feelings towards a client,” and they display a warm acceptance that they are being how they need to be (Passmore, 2021, p. 162).
  • Adopting a positive psychological stance Recognize that the client has the potential and wish to become fully functioning (Cox, 2018).

Effective coaching for personal growth involves adopting and committing to a series of beliefs that remind the coach that the “coachee is responsible for the results they create” (Starr, 2021, p. 18) and help them recognize when they may be avoiding this idea.

The following principles are, therefore, helpful for coaching personal development and growth (Starr, 2021).

  • Stay committed to supporting the client. While initially strong, you may experience factors that reduce your sense of support for the individual’s challenges.
  • Coach nonjudgmentally. Our job is not to adopt a stance based on personal beliefs or judgment of others, but to help our clients form connections between behavior and results.
  • Maintain integrity, openness, and trust. The client must feel safe in your company and freely able to express themselves.
  • Responsibility does not equal blame. Clients who take on blame rather than responsibility will likely feel worse about something without acknowledging their influence on the situation.
  • The client can achieve better results. The client is always capable of doing and achieving more, especially in relation to their goals.
  • Focus on clients’ thoughts and experiences. Collaborative coaching is about supporting the growth and development of the client, getting them to where they want to go.
  • Clients can arrive at perfect solutions. “As a coach, you win when someone else does” (Starr, 2021, p. 34). The solution needs to be the client’s, not yours.
  • Coach as an equal partnership. Explore the way forward together collaboratively rather than from a parental or advisory perspective.

Creating a supportive and nonjudgmental environment helps clients explore their thoughts, feelings, and goals, creating an environment for personal development and flourishing (Passmore, 2021).

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A personal development plan is a powerful document “to create mutual clarity of the aims and focus of a coaching assignment” (Starr, 2021, p. 291). While it is valuable during coaching, it can also capture a client’s way forward once sessions have ended.

Crucially, it should have the following characteristics (Starr, 2021):

  • Short and succinct
  • Providing a quick reference or point of discussion
  • Current and fresh, regularly revised and updated

Key elements of a personal development plan include the following (Starr, 2021):

  • Area of development This is the general skill or competence to be worked on.
  • Development objectives or goals What does the client want to do? Examples might include reducing stress levels, improving diet, or managing work–life balance .
  • Behaviors to develop These comprise what the client will probably do more of when meeting their objectives, for example, practicing better coping mechanisms, eating more healthily, and better managing their day.
  • Actions to create progress What must the client do to action their objectives? For example, arrange a date to meet with their manager, sign up for a fitness class, or meet with a nutritionist.
  • Date to complete or review the objective Capture the dates for completing actions, meeting objectives, and checking progress.

Check out Lindsey Cooper’s excellent video for helpful guidance on action planning within personal development.

We can write and complete personal development plans in many ways. Ultimately, they should meet the needs of the client and leave them with a sense of connection to and ownership of their journey ahead (Starr, 2021).

  • Personal Development Plan – Areas of Development In this PDP , we draw on guidance from Starr (2021) to capture development opportunities and the behaviors and actions needed to achieve them.
  • Personal Development Plan – Opportunities for Development This template combines short- and long-term goal setting with a self-assessment of strengths, weaknesses, and development opportunities.
  • Personal Development Plan – Ideal Self In this PDP template , we focus on our vision of how our ideal self looks and setting goals to get there.
“The setting of a goal becomes the catalyst that drives the remainder of the coaching conversation.”

Passmore, 2021, p. 80

Defining goals and objectives is crucial to many coaching conversations and is usually seen as essential for personal development.

Check out this video on how you can design your life with your personal goals in mind.

The following coaching templates are helpful, containing a series of questions to complete Whitmore’s (2009) GROW model :

  • G stands for Goal : Where do you want to be?
  • R stands for Reality : Where are you right now with this goal?
  • O stands for Options : What are some options for reaching your goal?
  • W stands for Way forward : What is your first step forward?

Goal setting creates both direction and motivation for clients to work toward achieving something and meeting their objectives (Passmore, 2021).

The SMART goal-setting framework is another popular tool inside coaching and elsewhere.

S = Specific M = Measurable A = Attainable/ or Agreed upon R = Realistic T = Timely – allowing enough time for achievement

The SMART+ Goals Worksheet contains a series of prompts and spaces for answers to define goals and capture the steps toward achieving them.

We can summarize the five principles of goal setting (Passmore, 2021) as follows:

  • Goals must be clear and not open to interpretation.
  • Goals should be stretching yet achievable.
  • Clients must buy in to the goal from the outset.
  • Feedback is essential to keep the client on track.
  • Goals should be relatively straightforward. We can break down complex ones into manageable subgoals.

The following insightful articles are also helpful for setting and working toward goals.

  • What Is Goal Setting and How to Do it Well
  • The Science & Psychology of Goal-Setting 101

Fostering Personal Development Skills

1. People skills

Improving how we work with others benefits confidence, and with other’s support, we are more likely to achieve our objectives and goals. The following people skills can all be improved upon:

  • Developing rapport
  • Assertiveness and negotiation
  • Giving and receiving constructive criticism

2. Managing tasks and problem-solving

Inevitably, we encounter challenges on our path to development and growth. Managing our activities and time and solving issues as they surface are paramount.

Here are a few guidelines to help you manage:

  • Organize time and tasks effectively.
  • Learn fundamental problem-solving strategies.
  • Select and apply problem-solving strategies to tackle more complex tasks and challenges.
  • Develop planning skills, including identifying priorities, setting achievable targets, and finding practical solutions.
  • Acquire skills relevant to project management.
  • Familiarize yourself with concepts such as performance indicators and benchmarking.
  • Conduct self-audits to assess and enhance your personal competitiveness.

3. Cultivate confidence in your creative abilities

Confidence energizes our performance. Knowing we can perform creatively encourages us to develop novel solutions and be motivated to transform.

Consider the following:

  • Understand the fundamentals of how the mind works to enhance your thinking skills.
  • Explore a variety of activities to sharpen your creative thinking.
  • Embrace the belief that creativity is not limited to artists and performers but is crucial for problem-solving and task completion.
  • Learn to ignite the spark of creativity that helps generate innovative ideas when needed.
  • Apply creative thinking techniques to enhance your problem-solving and task completion abilities.
  • Recognize the role of creative thinking in finding the right ideas at the right time.

To aid you in building your confidence, we have a whole category of articles focused on Optimism and Mindset . Be sure to browse it for confidence-building inspiration.

With new techniques and technology, our understanding of the human brain continues to evolve. Identifying the vital elements involved in learning and connecting with others offers deep insights into how we function and develop as social beings. We handpicked a small but unique selection of books we believe you will enjoy.

1. The Coaching Manual: The Definitive Guide to the Process, Principles and Skills of Personal Coaching – Julie Starr

The Coaching Manual

This insightful book explores and explains the coaching journey from start to finish.

Starr’s book offers a range of free resources and gives clear guidance to support new and existing coaches in providing practical help to their clients.

Find the book on Amazon .

2. The Big Leap: Conquer Your Hidden Fear and Take Life to the Next Level – Gay Hendricks

The Big Leap

Delving into the “zone of genius” and the “zone of excellence,” Hendricks examines personal growth and our path to personal success.

This valuable book explores how we eliminate the barriers to reaching our goals that arise from false beliefs and fears.

3. The Gifts of Imperfection: Let Go of Who You Think You’re Supposed to Be and Embrace Who You Are – Brené Brown

The Gifts of Imperfection

Brown, a leading expert on shame, vulnerability, and authenticity, examines how we can engage with the world from a place of worthiness.

Use this book to learn how to build courage and compassion and realize the behaviors, skills, and mindset that lead to personal development.

We have many resources available for fostering personal development and supporting client transformation and growth.

Our free resources include:

  • Goal Planning and Achievement Tracker This is a valuable worksheet for capturing and reflecting on weekly goals while tracking emotions that surface.
  • Adopt a Growth Mindset Successful change is often accompanied by replacing a fixed mindset with a growth one .
  • FIRST Framework Questions Understanding a client’s developmental stage can help offer the most appropriate support for a career change.

More extensive versions of the following tools are available with a subscription to the Positive Psychology Toolkit© , but they are described briefly below:

  • Backward Goal Planning

Setting goals can build confidence and the skills for ongoing personal development.

Backward goal planning helps focus on the end goal, prevent procrastination, and decrease stress by ensuring we have enough time to complete each task.

Try out the following four simple steps:

  • Step one – Identify and visualize your end goal.
  • Step two – Reflect on and capture the steps required to reach the goal.
  • Step three – Focus on each step one by one.
  • Step four – Take action and record progress.
  • Boosting Motivation by Celebrating Micro Successes

Celebrating the small successes on our journey toward our goals is motivating and confidence building.

Practice the following:

  • Step one – Reflect momentarily on the goal you are working toward.
  • Step two – Consider each action being taken to reach that goal.
  • Step three – Record the completion of each action as a success.
  • Step four – Choose how to celebrate each success.

If you’re looking for more science-based ways to help others reach their goals, check out this collection of 17 validated motivation & goal achievement tools for practitioners. Use them to help others turn their dreams into reality by applying the latest science-based behavioral change techniques.

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17 Tools To Increase Motivation and Goal Achievement

These 17 Motivation & Goal Achievement Exercises [PDF] contain all you need to help others set meaningful goals, increase self-drive, and experience greater accomplishment and life satisfaction.

Created by Experts. 100% Science-based.

Personal development has a rich and long history. It is underpinned by various psychological theories and remains a vital aspect of creating fulfilling lives inside and outside coaching and counseling.

For many of us, self-improvement, self-awareness, and personal growth are vital aspects of who we are. Coaching can provide a vehicle to help clients along their journey, supporting their sense of autonomy and confidence and highlighting their potential (Cox, 2018).

Working with clients, therefore, requires an open, honest, and supportive relationship. The coach or counselor must believe the client can achieve better results and view them nonjudgmentally as equal partners.

Personal development plans become essential to that relationship and the overall coaching process. They capture areas for development, skills and behaviors required, and goals and objectives to work toward.

Use this article to recognize theoretical elements from psychology that underpin the process and use the skills, guidance, and worksheets to support personal development in clients, helping them remove obstacles along the way.

Ultimately, personal development is a lifelong process that boosts wellbeing and flourishing and creates a richer, more engaging environment for the individual and those around them.

We hope you enjoyed reading this article. Don’t forget to download our three Goal Achievement Exercises for free .

Personal development is vital, as it enables individuals to enhance various aspects of their lives, including emotional wellbeing, relationships, careers, and overall happiness.

It promotes self-awareness, self-improvement, and personal growth, helping individuals reach their full potential and lead fulfilling lives (Passmore, 2021; Starr, 2021).

Personal development is the journey we take to improve ourselves through conscious habits and activities and focusing on the goals that are important to us.

Personal development goals are specific objectives individuals set to improve themselves and their lives. Goals can encompass various areas, such as emotional intelligence, skill development, health, and career advancement, providing direction and motivation for personal growth (Cox, 2018; Starr, 2021).

A personal development plan typically comprises defining the area of development, setting development objectives, identifying behaviors to develop, planning actions for progress, and establishing completion dates. These five stages help individuals clarify their goals and track their progress (Starr, 2021).

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  • Beck, J. S. (2011). Cognitive behavior therapy: Basics and beyond . Guilford Press.
  • Cottrell, S. (2015). Skills for success: Personal development and employability . Bloomsbury Academic.
  • Cox, E. (2018). The complete handbook of coaching . SAGE.
  • Ellis, A. (2000). Can rational emotive behavior therapy (REBT) be effectively used with people who have devout beliefs in God and religion? Professional Psychology-Research and Practice , 31 (1), 29–33.
  • Erikson, E. H. (1963). Youth: Change and challenge . Basic Books.
  • Illeris, K. (2018). An overview of the history of learning theory. European Journal of Education , 53 (1), 86–101.
  • Lomas, T., Hefferon, K., & Ivtzan, I. (2014). Applied positive psychology: Integrated positive practice . SAGE.
  • Maslow, A. H. (1970). Motivation and personalit y (2nd ed.). Harper & Row.
  • Passmore, J. (Ed.). (2021). The coaches’ handbook: The complete practitioner guide for professional coaches . Routledge.
  • Piaget, J. (1959): The Psychology of intelligence . Routledge.
  • Rose, C. (2018). The personal development group: The students’ guide . Routledge.
  • Ryan, R. M., & Deci, E. L. (2018). Self-determination theory: Basic psychological needs in motivation, development, and wellness . Guilford Press.
  • Seligman, M. E. (2011). Authentic happiness using the new positive psychology to realize your potential for lasting fulfillment . Nicholas Brealey.
  • Starr, J. (2021). The coaching manual: The definitive guide to the process, principles and skills of personal coaching . Harlow: Pearson Education.
  • Whitmore, J. (2009). Coaching for performance . Nicholas Brealey.

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  1. Cognitive Development

    Cognitive development is concerned with how thinking processes flow from childhood through adolescence to adulthood by involving mental processes such as remembrance, problem solving, and decision-making. It therefore focuses on how people perceive, think, and evaluate their world by invoking the integration of genetic and learned factors.

  2. Understanding the Mind: A Journey into Cognitive Development

    This essay delves into the broad spectrum of general principles of development, shedding light on the physical, social, and personal aspects of human growth. The journey of development, much like a carefully scripted play, unfolds from conception to the final act of life. It encompasses physical, social, and cognitive facets, each playing a ...

  3. 10.4 Cognition in Adolescence and Adulthood

    Cognition in Adolescence. Figure 10.20. Adolescents practice their developing abstract and hypothetical thinking skills, coming up with alternative interpretations of information. Adolescence is a time of rapid cognitive development. Biological changes in brain structure and connectivity in the brain interact with increased experience ...

  4. Essay on Cognitive Development

    the first psychologist to create a study of cognitive development that researchers and scientists still use today. Piaget's Cognitive Theory includes the four stages of cognitive development from birth to adulthood: Sensorimotor, Preoperational, Concrete operational, and Formal operational. These stages include thought, judgement, and knowledge.

  5. What Is Cognitive Development? 3 Psychology Theories

    Cognitive development is how humans acquire, organize, and learn to use knowledge (Gauvain & Richert, 2016). In psychology, the focus of cognitive development has often been only on childhood. However, cognitive development continues through adolescence and adulthood. It involves acquiring language and knowledge, thinking, memory, decision ...

  6. Jean Piaget: Life and Theory of Cognitive Development

    The four stages of Piaget's theory are as follows: Sensorimotor stage: The first stage of development lasts from birth to approximately age 2. At this point in development, children know the world primarily through their senses and movements. Preoperational stage: The second stage of development lasts from the ages of 2 to 7 and is ...

  7. Cognitive Development

    This essay explores the intricate journey of cognitive growth during adolescence, examining the processes of abstract thinking, decision-making, identity development, and the role of social influences in shaping the minds of young individuals. Emergence of Abstract Thinking Adolescence witnesses a shift from concrete to abstract thinking.

  8. Cognitive Development Theory: What Are the Stages?

    The late Swiss psychologist Jean Piaget was a major figure in the study of cognitive development theory in children. He believed that it occurs in four stages—sensorimotor, preoperational, concrete operational, and formal operational. This article discusses Piaget's stages of cognitive development, including important concepts and principles.

  9. Reflection Of Jean Piaget's Theory Of Cognitive Development

    REFLECTION PAPER # 6. Jean Piaget, a cognitivist, believed children progressed through a series of four key stages of cognitive development. These four major stages, sensorimotor, preoperational, concrete operational, and formal operational, are marked by shifts in how people understand the world. Although the stages correspond with an ...

  10. Vygotsky's Theory of Cognitive Development

    Lev Vygotsky's theory of child development, known as the sociocultural theory, emphasizes the importance of social interaction and cultural context in learning and cognitive development. Vygotsky proposed the concept of the Zone of Proximal Development (ZPD), which is the gap between what a child can do independently and what they can achieve with guidance from a more knowledgeable person.

  11. Ch 3: Lifespan Development

    Across these three domains—physical, cognitive, and psychosocial—the normative approach to development is also discussed. This approach asks, "What is normal development?" In the early decades of the 20th century, normative psychologists studied large numbers of children at various ages to determine norms (i.e., average ages) of when most children reach specific developmental ...

  12. Cognitive Development in Early Adulthood

    Perry's Scheme. One of the first theories of cognitive development in early adulthood originated with William Perry (1970), who studied undergraduate students at Harvard University. Perry noted that over the course of students' college years, cognition tended to shift from dualism (absolute, black and white, right and wrong type of thinking ...

  13. 1 Reflections on Cognitive Development

    McCormack divides her chapter on the development of temporal cognition into two major sections, reflective of two basic ways in which time features in everyday thought and action, and in cognitive-developmental psychology. The first section addresses time as duration (i.e., time as a dimension of stimuli or events).

  14. 7.7: Cognitive Development during Adolescence

    Adolescents practice their developing abstract and hypothetical thinking skills, coming up with alternative interpretations of information. Adolescence is a time of rapid cognitive development. Biological changes in brain structure and connectivity in the brain interact with increased experience, knowledge, and changing social demands to ...

  15. Piaget's Stages: 4 Stages of Cognitive Development & Theory

    Piaget divided children's cognitive development into four stages; each of the stages represents a new way of thinking and understanding the world. He called them (1) sensorimotor intelligence, (2) preoperational thinking, (3) concrete operational thinking, and (4) formal operational thinking. Each stage is correlated with an age period of ...

  16. Child Cognitive Development: Essential Milestones and Strategies

    Child cognitive development is a fascinating and complex process that entails the growth of a child's mental abilities, including their ability to think, learn, and solve problems. This development occurs through a series of stages that can vary among individuals. As children progress through these stages, their cognitive abilities and skills ...

  17. Cognitive Development in Adolescents and Young Adults

    In conclusion, cognitive development in adolescents is one of the most important progresses in person's life. It is a progress of thinking from the way a child thinks & the way a young adult think. As stated in the paragraphs above, adolescents use more of the emotional area of the brain whereas; young adults use more of the logical part of the ...

  18. How to Create a Personal Development Plan: 3 Examples

    Bandura's social cognitive theory. Albert Bandura's (1977) theory highlights the role of social learning and self-efficacy in personal development. It emphasizes that individuals can learn and grow through observation, imitation, and belief in their ability to effect change. 5. Self-determination theory.

  19. Personal Development: Reflection and Growth

    Personal development is the process of improving oneself in various aspects of life through self-reflection, learning, and growth. It is an ongoing journey that requires continuous effort and dedication to achieve one's full potential. The purpose of this reflective essay is to identify and analyze key experiences, strengths and weaknesses ...

  20. Essay Examples on Personal Growth and Development

    Our free essays on Personal Growth and Development can be used as a template for writing your own article. All samples were written by the best students 👩🏿‍🎓👨‍🎓 just for you. ... alternating and developing. Founded of cognitive ability, a feeling of individuality greatly hinges on numerous life encounters. Important elements ...

  21. Cognitive Development in Early Childhood Essay

    Total Length: 2265 words ( 8 double-spaced pages) Total Sources: 7. Page 1 of 8. Abstract. This paper explores two fundamental theories that are considered to be worthy guides and reference points in different discourses of early childhood cognitive development and education. Scientists and scholars world over hold the principles established in ...