This study examined the contributions of gender, adult romantic attachment orientations (i.e., avoidance, anxiety), defense mechanisms (i.e., narcissism, other-splitting), and stressors to college student psychological abuse perpetration (dominance). Men with higher levels of attachment avoidance, narcissistic entitlement, and stressful problems reported more dominance of female partners. Women with higher levels of other-splitting reported more dominance of male partners. Attachment avoidance contributed to women's dominance of male partners only in the context of elevated narcissistic entitlement or few stressors. (Contains 2 tables.)