Jean Piaget’s work is a classic example of cognitive developmental psychology, specifically the study of how children’s thinking and reasoning change as they grow.

Piaget focused on:

  • How children construct knowledge through interaction with their environment (schemas, assimilation, accommodation).
  • Distinct stages of cognitive development (sensorimotor, preoperational, concrete operational, formal operational).
  • How children’s logical thinking, perspective-taking, and understanding of concepts like conservation emerge over time.

So, in exam-style terms, the psychological area his work exemplifies is: cognitive (developmental) psychology.

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