The interaction of borderline personality disorder symptoms and relationship satisfaction in predicting affect.

Previous research has suggested that stable, marital relationships may have overall prognostic significance for individuals with borderline personality disorder (BPD); however, research focused on the impact of nonmarital, and perhaps short-term, romantic relationships is lacking. Thus, the primary goal of this study was to examine the impact of the interaction of BPD symptoms and relationship satisfaction on state negative affect in college undergraduates. It was predicted that individuals who scored higher on measures of BPD symptoms and who were in a satisfying romantic relationship would report less negative affect than comparable individuals in a less satisfying romantic relationship. Questionnaires assessing BPD symptoms, relationship satisfaction, and negative affect were administered to 111 women, the majority of whom then completed daily measures of relationship satisfaction and negative affect over a 2-week follow-up period. Hierarchical multiple regression and hierarchical linear modeling were used to test the hypotheses. The interaction of BPD symptoms with relationship satisfaction was found to significantly predict anger, as measured at one time point, suggesting that satisfying romantic relationships may be a protective factor for individuals scoring high on measures of BPD symptoms with regard to anger.