Couple dominance, dark personality traits, and power motivation

In romantic couples, there is usually an asymmetry in decisional power such that one partner is dominant and the other is subordinate. This study investigated the role of sex, ethnicity, self-assessed social status, personality traits, and power motivation (both explicit and implicit) as potential determinants or correlates of couple dominance in a mixed-sex sample of 50 college students. Through a previously validated questionnaire, participants indicated whether they were dominant or subordinate in their romantic relationship, or whether the latter was egalitarian. Major personality domains, narcissism, psychopathy, borderline, autistic-like traits, and explicit power were assessed through questionnaires. Participants also underwent a Picture Story Exercise to evaluate their implicit motives. Being dominant and having high explicit, but not implicit, power motivation were associated with some psychopathic, narcissistic, and/or borderline traits, while autistic-like traits were associated with being subordinate. Traits such as extraversion, conscientiousness, and honesty-humility had weak associations with couple dominance and/or explicit or implicit power motivation. Our findings have implications for the understanding of dominance dynamics within couples and the relationship between personality traits and power motivation.