A layperson's term for somebody with antisocial personality disorder : somebody who lacks a conscience. This is somebody who knows right from wrong, but doesn't care because he/she does not think in those terms; they care about their own benefit, regardless of who is in the way.The sociopath is very often thought of as a serial killer, but that represents only a small portion of them; sociopaths can be anybody. Sociopaths come in these basic types:Common: A simple lack of conscience and lack of proper integration into society, they're feral children grown up.Alienated: Alienated from other people, they have trouble empathizing with others.Aggressive: Comes with a consistent sadistic streak.Dissocial: Abides by gang rules and morals that antagonize mainstream society.The sociopath generally holds at least three of the following seven traits:1. Failure to conform to social norms, including behavior that warrants arrest.2. Deception; they're glib , pathological liars, and manipulators, often use false names.3. Impulsive behavior; failure to plan ahead.4. Irritable and aggressive, frequent fights or attacks.5. Reckless disregard for the safety of self or others.6. Consistently irresponsible; their work behavior is often inconsistent, they can be catastrophic parents.7. Without remorse; will justify stealing or hurting others ("if you hadn't dressed like that, I wouldn't have raped you").