Why are the Sociopaths so popular in the field of psychology?

I've always loved the idea of a psychopath.I think the term itself has been overused and misused in the past, but I still like the idea that there is a difference between a psychopath and a sociopath.Psychopaths have a bad temper and will often lash out at those they disagree with or those they think are less than them.They can also be emotionally manipulative and selfish, which is something that ...