Cognitive Development in Infancy and Early Childhood: Piaget’s Theory and Beyond

Chapter Four: The Emergence of Thought and Language

Overview

This chapter explores the foundations of cognitive development in infancy and early childhood, focusing on Piaget’s influential theory and subsequent research extensions. Key concepts include the development of mental structures, stages of cognitive growth, and the emergence of language.

Piaget’s Account of Cognitive Development

Basic Principles of Cognitive Development

Piaget proposed that children are active scientists, constructing knowledge through interaction with their environment. Their understanding evolves through the creation and refinement of mental categories called schemes.

• Schemes: Mental categories of related events, objects, and knowledge. Schemes progress from physical (e.g., grasping) to functional, conceptual, and abstract forms as children develop.

• Children adapt by refining existing schemes and adding new ones.

Assimilation and Accommodation

These two processes are central to how children learn and adapt:

• Assimilation: Integrating new experiences into existing schemes. This is necessary for benefiting from experience.

• Accommodation: Modifying schemes in response to new experiences, allowing children to handle novel information.

Equilibration

Equilibration refers to the balance between assimilation and accommodation. When children encounter information that does not fit their current schemes, they experience disequilibrium, prompting them to reorganize their thinking.

• Equilibrium: A state of cognitive balance.

• Disequilibrium: Conflict between new information and existing concepts.

• Equilibration: The process of reorganizing schemes, leading to more advanced cognitive structures. This occurs three times during development, resulting in four qualitatively different stages.

Periods of Cognitive Development

Piaget identified four major stages of cognitive development:

• Sensorimotor period (Birth–2 years): Infancy

• Preoperational period (2–7 years): Preschool and early elementary school

• Concrete operational period (7–11 years): Middle and late elementary school

• Formal operational period (11 years & up): Adolescence and adulthood

Sensorimotor Thinking

Key Features

During the sensorimotor stage, infants learn through direct interaction with their environment.

• Deliberate, means-ends behavior: Purposeful actions to achieve goals (emerges around 8 months).

• Object permanence: Understanding that objects continue to exist even when out of sight. Not fully developed until about 18 months.

• Using symbols: By 18–24 months, infants begin to anticipate consequences and use symbols (e.g., gestures) to represent objects and actions.

Preoperational Thinking

Characteristics

In the preoperational stage, children’s thinking is marked by several limitations:

• Egocentrism: Difficulty seeing the world from another’s perspective.

• Animism: Attributing life and lifelike properties to inanimate objects.

• Centration: Focusing on one aspect of a problem while neglecting others, which interferes with understanding concepts like conservation.

Appearance is Reality

Children in this stage often assume that things are exactly as they appear. For example, they may believe fictional characters (like Shrek) are real.

Summary Table: Piaget’s Stages of Cognitive Development

Stage	Age Range	Main Features
Sensorimotor	Birth–2 years	Object permanence, means-ends behavior, use of symbols
Preoperational	2–7 years	Egocentrism, animism, centration, appearance is reality
Concrete Operational	7–11 years	Logical thinking about concrete objects, conservation, reversibility
Formal Operational	11 years & up	Abstract reasoning, hypothetical thinking

Key Terms and Definitions

• Scheme: A mental structure for organizing knowledge.

• Assimilation: Incorporating new experiences into existing schemes.

• Accommodation: Changing schemes in response to new information.

• Equilibration: The process of balancing assimilation and accommodation to create stable understanding.

• Object permanence: The understanding that objects exist even when not visible.

• Egocentrism: The inability to see things from another person’s perspective.

• Animism: Belief that inanimate objects have lifelike qualities.

• Centration: Focusing on one aspect of a situation and neglecting others.

Example Applications

• Object permanence: Playing peek-a-boo with an infant demonstrates their developing understanding of object permanence.

• Egocentrism: A child may cover their eyes and believe others cannot see them, illustrating egocentric thought.

• Animism: A child may insist that their stuffed animal feels sad when left alone.

Additional info: Later sections of the chapter (not shown in these images) cover criticisms of Piaget’s theory, extensions by contemporary researchers, and the emergence of language. These are important for a full understanding of cognitive development in early childhood.