IN MOVIES AND on TV, sociopaths are commonly depicted as mega-villains who act outrageously cruel and are manipulative. In real life, however, sociopaths may be a little harder to identify.

"Everyone else had access to hope," Gagne says in her new memoir, "Sociopath." "Schizophrenics, alcoholics, bipolar ...

Listen, I've been there. I've had painful breakups after bad relationships and wondered if that person might be... well... a sociopath. We often ask ourselves ...

Mark Travers writes about the world of psychology. The terms “psychopath” and “sociopath” are often used interchangeably in pop culture and casual conversation. To the everyday person ...