Our ancient primate relatives—including Neanderthals—may have enjoyed a nice peck on the lips. But researchers still don’t ...

It’s always been true that some families are more physically affectionate than others. But what happens when some family members want to be touchy-feely, while others want to draw boundaries against ...

When my 3-year-old is in a good mood, she asks for a “true love kiss.” She first heard the phrase during a family viewing of Shrek, but it has since become her signal that she is craving affection.