According to laughter research, you're not as funny as you think.
Seeing rejection as a common thread in school shootings, psychologists conducted experiments to see if rejection in the lab produced aggression.
Love hurts. We all know this. But a recent study suggests that rejection really does cause physical pain. Learn more on this Moment of Science.
Laughter research has found that less than 20% of laughter is a sincere response to someone's humor. In fact, it's primarily a social signal.