What is cognitive development? Expert Dr Samantha Durrant answers parents' questions around this tricky subject, and how it ...

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 ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Everything you've wanted to know about object permanence, including how to help your baby develop this skill. If you have ever ...

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, ...

When do children start to understand something still exists even though they can’t see or hear it – and what activities will they enjoy doing at this time? By Ruth Thomson Object permanence means a ...

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.