Episode #483 from 1:38

Dark Tetrad

You wrote the book "Evil: The Science Behind Humanity's Dark Side." So, lots of interesting topics to cover here. Let's start with the continuum. You described that evil is a continuum. In other words, the dark tetrad — psychopathy, sadism, narcissism, Machiavellianism — are a continuum of traits, not a binary zero-one label of monster or non-monster. So, can you explain this continuum? So, each trait on the dark tetrad, as it's called, are the four traits that are associated with dark personality traits, things that we often associate with the word evil, like sadism, which is a pleasure in hurting other people; Machiavellianism, which is doing whatever it takes to get ahead; narcissism, which is taking too much pleasure in yourself and seeing yourself as superior to others. And then there's psychopathy. Psychopathic personalities specifically often lack empathy, and it's usually characterized by a number of different traits, including a parasitic lifestyle, so mooching off of others, deceptiveness, lying to people, and again, that empathy dimension where you are more comfortable hurting other people because you don't feel sad when other people feel sad.

October 14, 2025Unknown14 chaptersLex Fridman
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You wrote the book "Evil: The Science Behind Humanity's Dark Side." So, lots of interesting topics to cover here. Let's start with the continuum. You described that evil is a continuum. In other words, the dark tetrad — psychopathy, sadism, narcissism, Machiavellianism — are a continuum of traits, not a binary zero-one label of monster or non-monster. So, can you explain this continuum? So, each trait on the dark tetrad, as it's called, are the four traits that are associated with dark personality traits, things that we often associate with the word evil, like sadism, which is a pleasure in hurting other people; Machiavellianism, which is doing whatever it takes to get ahead; narcissism, which is taking too much pleasure in yourself and seeing yourself as superior to others. And then there's psychopathy. Psychopathic personalities specifically often lack empathy, and it's usually characterized by a number of different traits, including a parasitic lifestyle, so mooching off of others, deceptiveness, lying to people, and again, that empathy dimension where you are more comfortable hurting other people because you don't feel sad when other people feel sad.

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Dark Tetrad chapter timestamp | Julia Shaw: Criminal Psychology of Murder, Serial Killers, Memory & Sex | EpisodeIndex