Those with the Dark Triad traits of narcissism, Machiavellianism, and psychopathy often use deception and manipulation to ...

The dark triad is a name given to three personality traits: narcissism, psychopathy and Machiavellianism. When all three traits are found in a single person, it implies a malevolent personality.

Their work focused not just on the clinical definition of narcissism, but related 'Dark Triad' traits like manipulative behavior or 'Machiavellianism ... detectable in the brain and grounded ...