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 ...

Object permanence begins at around 4 months of age and is complete at around 12 months of age. What is object permanence? Simply put, it is the ability to understand that people or objects exist even ...