Babies love peek-a-boo. It’s one of the quickest ways to get a little one to smile, whether it’s someone you know or a cutie ...

A simple game of peek ... you play peekaboo, try leaving out the "boo" and see how they react. Do they seem confused? Are they trying to say the word in its place? By changing this small thing ...

But did you know ... way to see the science of peekaboo in action at home. First off, try playing peekaboo as you normally would. Engage with your baby and leave a gap before "boo".