ABSTRACT Due to differences in access to sexual information, some people may be more likely to endorse sexuality myths, which could be linked to poorer sexual and relational outcomes. The goals of this study were to: 1) investigate predictors of sexuality myth endorsement; 2) examine links between endorsing myths and sexual and relational outcomes; and 3) assess whether group membership strengthened associations between myth endorsement and sexual and relational outcomes. A large and diverse sample of undergraduate students (N = 1,077) and community adults (N = 3,359) completed an online survey assessing their demographics, sexuality myth endorsement, and sexual and relational outcomes. Being assigned male at birth, identifying as cisgender, identifying as heterosexual, being younger, holding more conservative political views, being more religious, living in an urban locality during childhood, and not receiving sex education predicted greater sexuality myth endorsement. Greater sexuality myth endorsement predicted lower sexual satisfaction, lower sexual function (among people with vulvas), higher sexual distress, and lower relationship satisfaction. Generally, the strength of associations between myth endorsement and sexual and relational outcomes did not differ across demographic factors. Overall, findings provide insight into groups more likely to endorse sexuality myths, who thus may be at risk of poorer sexual and relational outcomes.
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