4. Lack of empathy
One of the biggest symptoms of a psychopath is that they have a lack of empathy. One interesting study, as reported by ScienceDaily, discovered that when psychopathic individuals imagine others in pain, “brain areas necessary for feeling empathy and concern for others fail to become active.” Furthermore, when imagining others in pain, they showed an increase response in the ventral striatum, an area that involves pleasure. When imagining pain to themselves, however, psychopathic participants showed a typical neural response.