Stages of Development
Key Concepts and Terms
Experiments and Evidence
Brain Basics
Jean Piaget
100

This is the stage where babies learn through their senses and actions

Sensorimotor Stage

100

The study of how people think, learn, and behave.

psychology

100

Piaget watched children solve problems and play instead of giving them written tests. What type of research is this?

Observational
100

The part of your brain shaped like an almond.

Amygdala 

100

What did Jean Piaget study?

Jean Piaget studied how children think and learn.

200

This stage is when children begin to use language but struggle with logic.

Preoperational stage?

200

Mental structures that help us organize and understand information.

schemas

200

A child is shown two identical amounts of water, but one is poured into a taller glass. The child thinks one has more.

conservation task

200

This part of the brain is responsible for thinking, decision-making, and planning.

Frontal lobe

200

What is the theory Piaget is known for developing?

cognitive development

300

In this stage, children start to think logically but only about concrete, real things.

Concrete Operational stage

300

When you fit new information into what you already know.

assimilation

300

This test checks if a child understands that objects still exist even when they are hidden.

object permanence

300

This part of the brain helps control balance and coordination.

cerebellum

300

Before becoming famous for studying children’s thinking, Piaget originally studied this branch of biology...

zoology

400

This stage allows individuals to think abstractly and consider hypothetical situations.

Formal Operational stage

400

When you change your existing understanding because new information doesn’t fit.

accommodation

400

How does the conservation of mass experiment work?

Children are shown two balls of clay where one gets flattened or rolled into a different shape. Children are shown that changing the shape of clay does not change how much material it has.

400

This part of the brain controls basic life functions like breathing and heart rate.

brainstem

400

Piaget believed children learn by interacting with the world around them, which is formally called...?

Active learning

500

A child can solve math problems logically but struggles with abstract ideas like justice or freedom.

Concrete Operational stage

500

The young child thinks everyone thinks as they do and shares their feelings and desires.

Egocentrism

500

A child is asked to explain what another person sitting across the table can see.

perspective-taking (or the Three Mountains task)

500

This part of the brain helps process visual information from the eyes.

occipital lobe

500

Jean Piaget was born in what year?

1896

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