Baillargeon (1986)

IB Psychology: Baillargeon (1986)

Piaget"s theory of cognitive development is a stage theory. It looks at four key stages: the sensorimotor stage, pre-operational though, concrete operations, and formal operations. His stage theory has had a major effect on education and our understanding of child development. However, since his original theory was published, several psychologists have challenged some of the details of the stages.The following study...

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