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Developmental lecture 2 (Definitions (Intersubjectivity, Social…

- - - - 1) Sensorimotor stage (0-2 years) - Object permanence, A-not-B error, deferred imitation
      - 2) Pre-operational stage (2-7 years) - Acquisition = symbolic representation, Limitation = egocentricism, Conservation errors = centration
      - 3) Concrete-operational stage (7-12 years) - Begin to reason logically but thinking systematically still difficult - limited to concrete situations
      - 4) Formal-operational stage (12+ years) - Think abstractly & reason hypothetically