This post is co-authored by Ron Riggio and nonverbal communication expert Alan Crawley. When and why do we clap? We get startled, and we clap. We try to get our dog’s (or our child’s) attention, and ...

It's such a natural reaction to something impressive or joyous that you might never have thought to question it. But why do we show our appreciation, approval, or even happiness by noisily clapping ...

How do you decide when to start clapping after a virtuoso performance? And when do you stop? New research finds the answer lies in what other people around you are doing. The louder the applause — ...

WERTHEIMER: But what makes us clap more for some performances than others? You'd think it's obvious: the better the show, the more applause. Think again. New research at Uppsala University in Sweden ...