The work of Jean Piaget shaped our understanding of cognitive development in children, and it also gave us several tasks that we can use to study other animals. One classic issue studied by Piaget is ...

Everything you've wanted to know about object permanence, including how to help your baby develop this skill. If you have ever played a game of peek-a-boo with your baby or hidden a toy under a ...

Object permanence, as many will remember from college psychology class, refers to the understanding that things and people continue to exist even when you can’t see or hear them. First documented by ...

Piaget’s stages of development describe how children learn as they grow up. There are four distinct stages: sensorimotor, preoperational, concrete operational, and formal operational. Jean Piaget was ...

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, ...