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 ...

Things continue to exist even when we can’t see them, but until we’re old enough to understand that notion, it’s out of sight, out of mind. Object permanence is one of those things we figure out when ...

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 ...

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 ...

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