Partner Type Matters: Differences in Cross-Sectional Predictors of Men's Sexual Aggression in Casual and Steady Relationships.

Researchers rarely consider if different theoretical models are needed to understand the etiology of men's sexual aggression against women in steady as compared to casual relationships. A modified confluence model was evaluated with survey data from 556 young, single men. Hostile masculinity was the only assessed risk factor that had a direct relationship to sexual aggression against steady and casual partners. Impersonal sex and friends' approval of forced sex were directly related to sexual aggression against casual partners; whereas, heavy alcohol consumption was directly related to sexual aggression against steady partners. Psychopathy-related personality traits were indirectly related to both types of sexual aggression. The model explained a moderate amount of variance in casual date perpetration, but only a small amount of variance in steady date perpetration. Thus, more research and theory is needed to understand violence in this type of relationship.