Piaget Cognitive Development Stages and Key Concepts

What are Piaget's key assumptions about cognitive development?

Children actively construct knowledge, learning is stage-like, and thinking changes qualitatively as children interact with the world.

What is a scheme?

A mental framework or 'category' used to organize and interpret information.

What is adaptation?

The process of adjusting thinking to fit new information, including assimilation and accommodation.

What is assimilation?

Fitting new information into existing schemes without changing them.

What is accommodation?

Changing or creating schemes when new information cannot fit existing ones.

How do schemes change through adaptation?

Through assimilation (adding info to existing schemes) and accommodation (modifying schemes), leading to more accurate understanding.

What is organization?

The process of combining existing schemes into more complex, interconnected systems.

How does organization differ from adaptation?

Adaptation changes schemes through experience; organization restructures and connects schemes internally.

What is cognitive equilibrium?

A state where existing knowledge fits new information smoothly.

What is cognitive disequilibrium?

A state of mental imbalance when new information does not fit existing schemes.

How do equilibrium and disequilibrium drive learning?

Disequilibrium pushes accommodation, leading to new equilibrium with stronger, more accurate schemes.

What is the sensorimotor stage?

The stage where infants learn through senses and motor actions.

What is a circular reaction?

Repeating actions that produce interesting effects.

What are primary circular reactions?

Repetitions involving the infant's own body (e.g., thumb sucking).

What are secondary circular reactions?

Repeating actions involving external objects (e.g., shaking a rattle).

What are tertiary circular reactions?

Experimenting with new actions to see different outcomes (trial-and-error learning).

What is object permanence?

Understanding that objects exist even when they cannot be seen.

How does object permanence develop?

Gradually—from no awareness, to partial awareness, to fully understanding hidden objects still exist.

What is the A-not-B error?

Searching for an object where it was previously found (A) instead of its new location (B).

What does the A-not-B error show?

Limited object permanence and weak memory of location changes.

How does coordination of secondary circular reactions relate to schemes?

It shows schemes are becoming organized and flexible, allowing goal-directed behavior.

What are key characteristics of the preoperational stage?

Symbolic thinking, imagination, but limited logical reasoning.

What is dual representation?

Understanding that an object can be both itself and a symbol for something else.

What is egocentrism?

Difficulty seeing perspectives other than one's own.

How does egocentrism affect thinking?

Leads to magical thinking, centration, and lack of reversibility.

What is centration?

Focusing on one aspect of a situation while ignoring others.

What is reversibility?

The ability to mentally reverse a sequence of events or actions.

How does egocentrism appear in theory of mind research?

Children struggle to understand that others can have different beliefs or perspectives.

Why do children fail conservation tasks?

Because of centration and lack of reversibility.

What characterizes the concrete operational stage?

Logical thinking about concrete, real-world objects.

What is conservation?

Understanding that quantity stays the same despite changes in shape or appearance.

How is conservation tested?

Showing two equal quantities, changing one's appearance, and asking if they are still equal.

What cognitive abilities emerge in this stage?

Classification, seriation, and logical thinking about concrete problems.

What characterizes the formal operational stage?

Abstract, hypothetical, and systematic thinking.

What is hypothetical-deductive reasoning?

Ability to form hypotheses and test them logically.

Give an example of deductive reasoning.

'If all birds have wings and a robin is a bird, then a robin has wings.'

What is the imaginary audience?

Belief that others are constantly watching and judging you.

What is the personal fable?

Belief that one is unique, special, and invulnerable.

Substage 1 (0–1 month): Reflexes — what happens?

Infants use built-in reflexes (sucking, grasping). No real learning yet, just automatic responses.

Substage 2 (1–4 months): Primary circular reactions — what happens?

Infants repeat actions involving their own body that feel good (thumb sucking, hand movements). First signs of learning.

Substage 3 (4–8 months): Secondary circular reactions — what happens?

Infants repeat actions involving external objects (shaking a rattle, banging toys). They discover effects on the environment.

Substage 4 (8–12 months): Coordination of secondary circular reactions — what happens?

Goal-directed behavior emerges. Infants combine actions to solve problems (move obstacle to get toy). Early planning + stronger object permanence.

Substage 5 (12–18 months): Tertiary circular reactions — what happens?

“Little scientists” stage — infants experiment with new actions to see what happens (trial and error, dropping objects in different ways).

Substage 6 (18–24 months): Mental representation — what happens?

Children develop internal thinking. They can solve problems mentally, use symbols, and show strong object permanence. Language and pretend play begin.

Why did Piaget divide stages into substages?

Because development happens gradually, not all at once. Substages break each stage into smaller steps to show how thinking abilities slowly emerge, change, and build on each other over time.