What you'll learn
Piaget's account of how children's thinking develops.
Key ideas
- Stages: sensorimotor, preoperational, concrete and formal operational.
- Schemas develop through assimilation and accommodation.
- Object permanence, conservation and egocentrism.
Exam tips
- Match concepts to the correct stage.
- Use conservation studies as evidence.
Common mistakes
- Confusing assimilation and accommodation.
- Mixing up the stages.