A multi-method study of self-expansion in couples coping with Female Sexual Interest/Arousal Disorder

Sexual health is a fundamental aspect of quality of life; a satisfying sexual relationship is associated with better physical, psychological, and relationship health and well-being. In fact, people who maintain a satisfying, active sex life over time live longer than those who report lower sexual frequency and satisfaction. Yet problems with sexual function are extremely common, especially for women: a persistent difficulty with sexual desire and/or arousal that is personally upsetting-Female Sexual Interest/Arousal Disorder (FSIAD)-affects 7% to 23% of the general population. FSIAD is linked to more healthcare costs, depressive symptoms and anxiety, and lower relationship satisfaction. Prior research has mainly focused on medical interventions that are costly and ineffective, while etiological factors that could inform more effective treatment have been ignored. Current clinical models suggest that interpersonal processes play a critical role in FSIAD, yet existing studies have not examined their daily or long-term impacts, and almost none have involved romantic partners. One highly relevant interpersonal factor that has been associated with greater sexual desire and satisfaction in community couples is self-expansion (i.e., novelty and broadening in a relationship). The goal of this two-centre study is to examine how self-expansion influences sexual desire and associated impairments in couples coping with FSIAD. We expect that women with FSIAD and their partners' (same-sex, mixed-sex, and gender diverse relationships) higher self-expansion will lead to a reduction in FSIAD symptoms (e.g., higher sexual desire) and better relational and psychological adjustment for both partners in daily life and over time. We also expect that greater feelings of both intimacy and autonomy within the relationship will explain these associations. Results have the potential to improve the health of couples coping with FSIAD by providing novel targets for couple interventions.