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 ...

While off-the-cuff remarks from audience members as they leave the theater may not be the most accurate barometer of a film’s worth, the guy who was overheard saying “I don’t like movies that make ...