The preoperational stage occurs between ages 2 and 7, where children engage in pretend play and symbolic thinking. During ...

The developmental psychologist and genetic epistemologist, Jean Piaget, investigated the cognitive development of children. He identified four stages from the sensorimotor period, culminating at 2 ...

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 ...

Reviewed by Amy Morin, LCSW Key Takeaways Child development theories help explain how children grow socially, emotionally, ...