Add Yahoo as a preferred source to see more of our stories on Google. If wordlessly clapping your hands to make as much noise as possible feels like a rather primitive thing to do, you'd be quite ...

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 ...