Dark Personality Traits and Online Toxicity: Linking Self-Reports to Reddit Activity

• URL: http://arxiv.org/abs/2512.10113v1
• Date: Wed, 10 Dec 2025 22:06:30 GMT
• Title: Dark Personality Traits and Online Toxicity: Linking Self-Reports to Reddit Activity
• Authors: Aldo Cerulli, Benedetta Tessa, Giuseppe La Selva, Oronzo Mazzeo, Lorenzo Cima, Lucia Monacis, Stefano Cresci,
• Abstract summary: Dark personality traits have been linked to online misbehavior such as trolling, incivility, and toxic speech.<n>Sadistic and psychopathic tendencies are most strongly associated with overtly toxic language.<n>Bright and dark traits interact in nuanced ways, with extraversion reducing trolling tendencies and conscientiousness showing modest associations with entitlement and callousness.
• Score: 0.2336460276005258
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Dark personality traits have been linked to online misbehavior such as trolling, incivility, and toxic speech. Yet the relationship between these traits and actual online conduct remains understudied. Here we investigate the associations between dark traits, online toxicity, and the socio-linguistic characteristics of online user activity. To explore this relationship, we developed a Web application that integrates validated psychological questionnaires from Amazon Mechanical Turk users to their Reddit activity data. This allowed collecting nearly 57K Reddit comments, including 2.2M tokens and 152.7K sentences from 114 users, that we systematically represent through 224 linguistic and behavioral features. We then examined their relationship to questionnaire-based trait measures via multiple correlation analyses. Among our findings is that dark traits primarily influence the production rather than the perception of online incivility. Sadistic and psychopathic tendencies are most strongly associated with overtly toxic language, whereas other dark dispositions manifest more subtly, often eluding simple textual proxies. Self-reported engagement in hostile behavior mirrors actual online activity, while existing hand-crafted textual proxies for dark triad traits show limited correspondence with our validated measures. Finally, bright and dark traits interact in nuanced ways, with extraversion reducing trolling tendencies and conscientiousness showing modest associations with entitlement and callousness. These findings deepen understanding of how personality shapes toxic online behavior and highlight both opportunities and challenges for developing reliable computational tools and targeted, effective moderation strategies.

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