Dark Tetrad: A Review
Dark Tetrad: A Review

Summary/Abstract: The Dark Tetrad (narcissism, Machiavellianism, psychopathy, and sadism) provides a robust theoretical framework for understanding individuals’ behaviors, interpersonal relationships, and social adaptation. A review of the literature reveals that these personality traits have been most extensively investigated in three primary domains: workplace dynamics, social and romantic relationships, and violent behavior. The purpose of this review is to systematically examine the findings in these three areas and discuss them within a coherent theoretical context. Individuals exhibiting Dark Tetrad traits produce pronounced effects—typically with negative outcomes—both in their close relationships and across various levels of society. In particular, sadism emerges as the strongest predictor of counterproductive work behaviors such as bullying, harassment, and organizational deviance; when combined with psychopathy, it also becomes one of the most significant determinants of interpersonal physical and psychological violence. These traits lead to erosion of trust, manipulative tendencies, lack of empathy, and difficulties in forming emotional bonds, causing friendships and romantic relationships to become superficial and unsustainable. Furthermore, the explanatory power of the Dark Tetrad is increasingly evident in emerging problem areas such as online trolling, interference in others’ relationships, and sexually coercive behaviors. This review underscores the critical importance—at both individual and societal levels—of scientific efforts aimed at early detection of Dark Tetrad traits and prevention of their harmful consequences. It also highlights the need for future research to more thoroughly investigate the interactions among these traits, contextual moderators, and potential intervention strategies.

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