Bisexual women drink more than lesbian and heterosexual women. However, few studies have examined factors that influence drinking among bisexual women. Although descriptive drinking norms are strong predictors of drinking, little research has examined how drinking norms influence alcohol use for bisexual women. The present study examined bisexual women's reports of descriptive drinking norms for bisexual, lesbian, and heterosexual women, and associations with their own frequency of alcohol consumption, quantity, binge drinking, and hazardous alcohol use. Participants were 179 self-identified bisexual women between 18 and 30 years old who reported past 30-day drinking. Participants perceived more frequent alcohol use for bisexual and heterosexual women as compared to lesbian women. Further, participants perceived higher alcohol quantity for heterosexual as compared to lesbian women, but norms for alcohol quantity did not differ between bisexual women and other groups. Descriptive drinking norms about bisexual women were positively related to participants' frequency of alcohol consumption, binge drinking, and hazardous alcohol use. In contrast, descriptive drinking norms about heterosexual women were negatively associated with participants' binge drinking and hazardous alcohol use. Findings document the importance of assessing drinking norms separately for bisexual, lesbian, and heterosexual women. Alcohol interventions that include information about drinking norms for bisexual women specifically may be more effective at reducing hazardous drinking.
Keywords: alcohol use; bisexual women; drinking norms; sexual minority; young adults.