Mutually attracted or repulsed? Actor–partner interdependence models of Dark Triad traits and relationship outcomes

Although the Dark Triad traits – narcissism, Machiavellianism, and psychopathy – have been studied in individuals, little is known about their roles in dating relationships. Forty-five heterosexual undergraduate couples (N = 90) reported measures of the Dark Triad and relationship commitment and satisfaction. Within couples, assortative mating was slightly negative for narcissism, marginally positive for Machiavellianism, and significantly positive for psychopathy. Using actor–partner interdependence models, we explored the extent to which satisfaction mediated the direct associations between the Dark Triad and commitment. Men’s satisfaction marginally mediated the women’s Dark Triad → men’s commitment negative association. Among the three Dark Triad subscales, satisfaction marginally mediated both of the actor-effect-based psychopathy → commitment negative associations. We discuss possible implications for couples’ relationship strategies.