What do you really want when you want to get your revenge?

The psychology of retaliation. Revenge often serves as one of humankind's most innate motivators. It's led many people to do remarkable things, just as some truly terrible ones. Sometimes it feels like a natural response we cannot control. Others, it turns into very calculated efforts. But, what lies at the core of such an impulse? Psychoanalyst Renée Danziger offers some answers.