The prototypical psychopath has deficits or deviances in several areas: interpersonal relationships, emotion, and self-control. Psychopaths gain satisfaction through antisocial behavior, and do not experience shame, guilt, or remorse for their actions.
Psychopaths lack a sense of guilt or remorse for any harm they may have caused others, instead rationalizing the behavior, blaming someone else, or denying it outright.
Psychopaths also lack empathy towards others in general, resulting in tactlessness, insensitivity, and contemptuousness. All of this belies their tendency to make a good, likable first impression.
Psychopaths have a superficial charm about them, enabled by a willingness to say anything without concern for accuracy or truth. Shallow affect also describes the psychopath's tendency for genuine emotion to be short lived and egocentric with an overall cold demeanor.
Psychopaths also have a markedly distorted sense of the potential consequences of their actions, not only for others, but also for themselves. They do not, for example, deeply recognize the risk of being caught, disbelieved or injured as a result of their behaviour.
Sound familiar?