The Dark Triad is a group of three personality traits: Narcissism, Machiavellianism and Psychopathy, all of which are interpersonally aversive. The Dark Triad refers to three theoretically distinct but empirically overlapping personality constructs. The term reflects the perception that these three diagnostic categories have at least some common underlying factors

- The narcissistic personality is characterized by a grandiose self-view, a sense of entitlement, lack of empathy, and egotism. Some theories, such as those of Heinz Kohut, associate it with the protection of a radically weak, shamed, or damaged self.

- The Machiavellian personality is characterized by manipulation and exploitation of others, with a cynical disregard for morality and a focus on self-interest and deception.

- The psychopathic personality is characterized by impulsive thrill-seeking, and in its "primary" form by selfishness, callousness, lack of personal affect, superficial charm, and remorselessness.