Dyadic splitting, rejection sensitivity, emotional dysregulation and relationship quality in heterosexual couples in which the female is diagnosed with borderline personality disorder

This study examined dyadic splitting, rejection sensitivity, and emotional dysregulation in heterosexual couples in which the female has a diagnosis of borderline personality disorder. Relationship satisfaction and commitment in both partners was also explored. The Dyadic Splitting Scale, Adult Rejection Sensitivity Questionnaire, and Difficulties in Emotion Regulation Scales examined these mechanisms. The Investment Model Scale assessed relationship satisfaction and commitment. Results indicate that rejection sensitivity is a positive predictor of relationship commitment and a negative predictor of relationship satisfaction in male partners. Results suggested that men in these intimate relationships may be committed despite low satisfaction due to being highly rejection sensitive. In contrast, dyadic splitting, rejections sensitivity, and emotional dysregulation had little impact on relationship satisfaction and commitment in females with a BPD diagnosis. Other mechanisms such as developmental age and unstable sense of identity should be explored for their contribution to relationship quality in these relationships.