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 ...

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 ...

If babies weren’t so smart, they’d be incredibly dumb. The baby brain is perhaps the world’s greatest learning machine, but it starts out almost entirely empty — particularly concerning the basic way ...