AP Psychology / Unit 3: Development and Learning
3.4 Cognitive Development Across the Lifespan
Notes
Piaget's stages:
- Sensorimotor (0–2): object permanence.
- Preoperational (2–7): egocentrism, no conservation.
- Concrete operational (7–11): conservation, logical thinking about concrete things.
- Formal operational (12+): abstract reasoning.
- Vygotsky: the zone of proximal development and scaffolding.
Practice
A child knows a hidden toy still exists. This is:
Sensorimotor milestone.
A child thinks a tall thin glass holds more than a short wide one with the same water. Stage:
Lacks conservation.
A teacher gives just enough help for a student to solve a problem. This is:
Vygotsky.
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