The so-called “dark triad” of psychopathy, narcissism and Machiavellianism are three independent personality traits, suggests a new study, that found that the dark triad traits are not just different manifestations of the same underlying lack of empathy.

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The so-called “dark triad” of psychopathy, narcissism and Machiavellianism are three independent personality traits, suggests a new study, that found that the dark triad traits are not just different manifestations of the same underlying lack of empathy.