Researchers have consistently found an increased vulnerability to sexual violence in bisexual women. Much like the broader literature around sexual violence against women, the limited research examining this vulnerability in bisexual women has focused on intraindividual victim factors such as alcohol use, mental health, and previous sexual assault victimization. Sexual violence researchers are expanding their purview to include sociocultural factors manifested in the immediate context of sexual violence perpetration and victimization. Adding to this expanding awareness of the importance of these factors, the current study explored the relationships between bisexual women's perceived experiences of dehumanization, hostile sexism, and biphobia in the social circle with which they spend the most time and their reported experience of sexual violence within the last year. Consistent with prior research indicating heightened vulnerability to sexual violence in bisexual women a substantial portion of participants (72.2%) reported experiencing sexual violence within the last year. Of those participants reporting experiences of sexual violence, most (93%) of those reporting sexual violence endorsing surviving rape. Hypotheses were partially supported, with peer hostile sexism, biphobia, and dehumanization of bisexual women significantly relating to sexual violence. When examined simultaneously, only peer hostile sexism and biphobia emerged as unique predictors of vulnerability to sexual violence. The current study adds to the literature supporting the need for increased focus on bisexual women's unique vulnerability to sexual violence, as well as the important and underexamined roles of sexism and biphobia as contributing factors to this vulnerability through peer-level processes and social norms.
Public Significance StatementThis study adds to an expanding literature addressing sexual violence against bisexual women and associated risk factors in peer group environments. The results indicate that hostile sexism and biphobia in bisexual women's social environments may be related to the perpetration of sexual violence against bisexual women, identifying potential targets for prevention efforts. Recommendations for support professionals and additional research directions are also included. Research has shown that bisexual women face a distinctly high level of vulnerability to sexual violence (e.g., Balsam, 2003;Johnson & Grove, 2017;Sigurvinsdottir & Ulman, 2015). In a review of the 2010 National Intimate Partner and Sexual Violence Survey (NISVS; Walters et al., 2013), bisexual women reported rates of rape more than three times higher than rates reported by lesbian and heterosexual women, and rates of other lifetime sexual violence victimization (e.g., unwanted sexual contact, attempted rape) more than twice that of lesbian and heterosexual women. Recent lines of research have emerged from these findings with a significant focus on individual-level victim factors such as substance use, previous sexual victimization, and bi...