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 ...

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 ...