abstract: Empirical research has supported that higher behavioral engagement with and higher affective pride toward the LGBTQ+ community are associated with greater psychological well-being among Latinx sexual minorities (e.g., lesbian, gay, bisexual, queer, etc.). Less is known, however, about predictors of sexual identity development among Latinx sexual minorities. This study explores how heterosexist discrimination may be related to the exploration and affirmation of one’s sexual minority identity. Conversely, conflicts in allegiance (CIA), that is, the experience of perceived incompatibility Latinx sexual minorities may experience between their racial-ethnic and sexual minority identities, was examined as a potential negative correlate. This study applies a rejection-identification model and identity development theories to test the associations between heterosexist discrimination, conflicts in allegiances and sexual identity constructs (LGBTQ+ behavioral engagement and affective pride). Among a sample of 366 Latinx sexual minorities, this study found both heterosexist discrimination and conflicts in allegiances were significant predictors of LGBTQ+ behavioral engagement and affective pride. Additionally, data supported two mediational models that tested relations between heterosexist discrimination, LGBTQ+ behavioral engagement, and affective pride. This study contributes to our understanding of sexual minority identity among Latinx individuals. These findings can assist helping professionals and community centers in promoting psychological well-being among Latinx sexual minority individuals by informing identity-affirming practices and interventions. / Dissertation/Thesis / Masters Thesis Counseling Psychology 2018

Indiana University-Purdue University Indianapolis (IUPUI) / AIM People with marginalized sexual orientations experience mental health and substance use problems at a higher rate compared to heterosexuals. Experiences of discrimination have been identified as a significant factor in explaining such disparities, and a growing body of literature has developed seeking to explore the contexts in which discrimination occurs. However, one context that is understudied is the online environment. Based on Meyer’s (2003) Minority Stress Model (MSM), it is postulated that specific proximal group-specific processes mediate the relationship between discrimination and health outcomes, with other social factors providing protective effects. However, research is sparse empirically investigating different mechanisms, consequences, and potential modifying factors for sexual minority young adults experiencing online heterosexist discrimination (OHD). Thus, the current study aims to explore experiences of OHD among young adults. METHODS Using the MSM as a guiding framework, the study examined proximal factors of internalized heterosexism, online concealment, and rejection sensitivity as mechanisms underlying the effect of OHD on health outcomes and online social support as a moderating factor. 383 young adults (18-35) with marginalized sexual orientations were recruited from an introductory psychology subject pool, two online crowdsourcing platforms (Prolific, MTurk), and the community. They completed measures of OHD, online social support, online concealment, rejection sensitivity, internalized heterosexism, psychological distress, and substance use. RESULTS Path analyses in Mplus revealed that two proximal stressors (rejection sensitivity, sexual orientation concealment) were positively related to psychological distress as a result of OHD. Sexual orientation concealment was associated with increased risk for cannabis use due to OHD. Online social support from LGBTQ+ peers did not buffer these relationships. CONCLUSION The MSM is a viable guiding framework in exploring OHD. Rejection sensitivity and online sexual orientation concealment are important constructs to consider for future research and may be ideal treatment targets for individuals experiencing psychological distress or engaging in cannabis use due to OHD.

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