What you'll learn
Piaget's theory of children's cognitive development.
Key ideas
- Stages: sensorimotor, preoperational, concrete and formal operational.
- Schemas develop through assimilation and accommodation.
- Key concepts: object permanence, conservation and egocentrism.
Exam tips
- Match each concept to the correct stage.
- Use studies (e.g. conservation tasks) as evidence.
Common mistakes
- Confusing assimilation and accommodation.
- Mixing up the stages.