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Dark thoughts, dark deeds: An exploration of the relationship between the Dark Tetrad and aggression

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Abstract

This paper revisits the ongoing debate regarding the uniqueness of each of the Dark Tetrad traits. Extending Jones and Neria’s (Personality and Individual Differences, 86, 360–364, 2015) research, we investigated how these traits are differentially related to aggressive tendencies and whether these relationships are mediated by anger rumination. Data were collected from 314 university students who completed online self-report measures on the Dark Tetrad traits, trait aggression, and anger rumination. Psychopathy had the strongest correlation with physical aggression, while hostility was most strongly related to Machiavellianism. Supplementary analyses revealed that anger rumination mediated the relationship between psychopathy and aggressive tendencies while also playing a mediatory role between Machiavellianism and some expressions of trait aggression. Similar mediation patterns were observed for sadism. While sadism and psychopathy were very similar, these results support that the Dark Tetrad traits should also be viewed as unique constructs even as they are intercorrelated. Implications and directions for future research are discussed.

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Acknowledgments

This research was conducted with the support of scholarships awarded to the second and third authors from the Social Sciences and Humanities Research Council of Canada.

A version of this manuscript was originally submitted as an Honors Thesis paper by the first author to the Department of Psychology at the University of Western Ontario.

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This research was conducted with the support of scholarships awarded to the second and third authors from the Social Sciences and Humanities Research Council of Canada.

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Correspondence to Nimisha Jain.

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University of Western Ontario Research Ethics Board.

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Contribution to Field

The Dark Tetrad is a group of malevolent personality traits including psychopathy, Machiavellianism, narcissism, and sadism. Since its inception, there has been a debate about the redundancy of the Dark Tetrad traits – are these traits unique or are they similar and should be treated as one construct? We contend that the Dark Tetrad traits are intercorrelated, but they are still unique enough to be studied on their own. We examine the correlations among the Dark Tetrad traits themselves, and how they are expressed behaviorally. We look at the links between aggression, its subtypes, and the Dark Tetrad traits, and then compare these relationships with each other. Further, we consider how the link between aggression and a Dark trait is mediated by anger rumination. We found that there are differential correlations between the Dark traits and aggressive tendencies, suggesting that even while the traits are interrelated, they are related to different forms of expressing the same trait. Moreover, anger rumination, a cognitive process, uniquely mediates the relationships between Dark trait and aggression. However, the differences between psychopathy and sadism become nonsignificant after accounting for multiple comparisons, both in how they correlate with aggressive tendencies, and how they are mediated by anger rumination.

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Jain, N., Kowalski, C.M., Johnson, L.K. et al. Dark thoughts, dark deeds: An exploration of the relationship between the Dark Tetrad and aggression. Curr Psychol 42, 18017–18032 (2023). https://doi.org/10.1007/s12144-022-02993-4

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  • DOI: https://doi.org/10.1007/s12144-022-02993-4

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