# Three Dark Personality Traits Linked To Infidelity Psychopathy, Machiavellianism, and narcissism show varying correlations with betrayal in romantic relationships. - **Source:** [PsyBlog](https://www.spring.org.uk) - **Published:** 2026-11-03 - **Topic:** [Leadership](https://brifing.si/c/leadership) - **Original article:** - **On Brifing:** https://brifing.si/s/a5b6ea98-5a58-4e10-a109-db01475332ea ## Research Scope and Methodology A review of eleven distinct studies examined the relationship between dark personality traits and infidelity. The research encompassed diverse demographics, including university students, married couples, and general adult populations. By synthesizing these findings, the analysis identifies specific behavioral patterns that correlate with the betrayal of trust within committed romantic partnerships. ## Psychopathy as Primary Predictor Psychopathy exhibits the strongest average correlation with infidelity among the studied traits. Characterized by impulsivity, low empathy, and a lack of guilt, individuals with these traits prioritize immediate sexual rewards. Their inherent willingness to take risks often diminishes the deterrent effect of potential discovery, facilitating deceptive behaviors within their personal relationships. ## Machiavellianism and Calculated Deception Machiavellianism involves a cynical worldview and a strategic willingness to manipulate others for personal gain. While strongly linked to cheating, the association is slightly weaker than psychopathy. These individuals often weigh the rewards of an affair against the consequences of discovery, using a calculated approach to protect their reputation while pursuing interests. ## Narcissism and Ego Dynamics Narcissism, defined by an inflated sense of self-importance and entitlement, shows the weakest and least consistent link to infidelity. While the desire for external admiration may drive interest in alternative partners, an inflated ego alone is insufficient to predict betrayal. The pattern remains less predictable across the reviewed academic studies. ## Mechanisms Behind Betrayal Impulsivity, emotional coldness, and a propensity for manipulation serve as the core mechanisms linking these dark traits to infidelity. These characteristics reduce the psychological barriers to deception. By prioritizing personal gratification over partner welfare, individuals possessing these traits are statistically more likely to engage in behaviors that violate established relationship trust. ## Contextualizing Relationship Variables Dark personality traits provide only a partial explanation for infidelity. The broader behavioral picture depends heavily on how these traits interact with external factors. Relationship satisfaction, levels of commitment, and the accessibility of alternative partners remain critical variables that moderate the influence of individual personality traits on actual cheating behavior outcomes. ## Academic Publication Context The findings were published in the journal Psihologija by researcher Ataman Yalçınkaya Alkar in 2025. This meta-analysis highlights the complexity of human behavior in romantic settings. By isolating these three specific traits, the study offers a structured framework for understanding the psychological underpinnings of trust violations in long-term interpersonal connections. ## Implications for Relationship Stability Understanding these personality markers helps clarify why some individuals are more prone to betrayal. While these traits are significant, they do not guarantee infidelity. Future research must continue to integrate personality assessments with situational context to fully map the drivers of relationship instability and the maintenance of long-term partner trust. ## Sources covering this story - https://www.spring.org.uk/2026/11/dark-infidelity.php — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._