IT is late afternoon, but the four-year-old insists: “It can’t be. I haven’t had my nap.” Such is the mind of the child, by most indications illogical and full of nonsense. Not so, says Jean Piaget, a ...

Jean Piaget (1896-1980) always considered himself a natural scientist, not a psychologist. As a boy he quickly gave up play and pretend to take refuge in "work" -- exploring internal combustion ...

Piaget’s stages of development include sensorimotor, preoperational, concrete operational, and formal operational. While there is some criticism of them, they may help characterize child development.

Jean Piaget’s theory of cognitive development has been a central framework for understanding how children grow and learn. His model describes development through four sequential stages: sensorimotor, ...

What Are the Piaget Stages of Development? Piaget's stages of development are part of a theory about the phases of normal intellectual development from infancy through adulthood, including thought, ...