The Role of Shame in the Relationship between Alcohol Use Severity and Relational Intimacy among Sexual Minority Women

Background: Sexual Minority Women (SMW) are disproportionately likely to struggle with substance use and shame, two factors that are associated with poorer relationship quality and decreased relational intimacy (Doyle & Molix, 2015). However, there is a dearth of research examining shame and substance use concurrently among SMW. Objectives: The current study elucidated the role of shame-based cognitions (SBCs) and shame-based behaviors (SBBs) in explaining the relationship between alcohol use severity and relational intimacy. We recruited adult cisgender women (N = 105) in a romantic relationship who self-identified as a sexual minority and reported alcohol use during the past three months through Amazon Mechanical Turk. Participants completed an online survey assessing alcohol use, SBCs, SBBs, and relational intimacy. Results: There was a significant positive relationship between alcohol use severity with SBCs (r = .29, p = .003) and with SBBs (r = .62, p <.001). SBBs were shown to be negatively correlated with relational intimacy (r = -.48, p < .001). Parallel mediation analysis demonstrated that SBCs and SBBs accounted for approximately 34.4% of the variance in intimacy. The indirect effects of SBCs were significant (beta = .10, 95% CI [.02, .18] while SBBs (beta = -.14, 95% CI [-.29, .01]) did not show effects. Discussions: Given the disproportionate rates of alcohol use among SMW, this study offers a nuanced picture of the relationships between constructs known to impact alcohol use. The findings underscore the importance of SBCs and point to a potential treatment target among SMW presenting with alcohol use and diminished relational intimacy.