The Dyadic Effects of Top/Bottom Sexual Self-Labels and Partner Sexual Role Requirements on Facial Masculinity Preferences Among Gay and Bisexual Men in China.

Sexual position preferences in male same-sex relationships are reflected in individuals' top/bottom sexual self-labels and requirements for their partners' sexual positions. Previous studies revealed significant differences in facial masculinity preferences among sexual self-label groups among gay and bisexual men. This study examined the moderating effect of requirements for partners' sexual positions on the relationship between facial masculinity preferences and sexual self-labels. Participants ( = 1,628, data were collected in 2019) were shown 10 pairs of male faces sequentially, with each pair consisting of a masculinized and feminized version of the same base face. "Bottoms" and "versatiles" preferred masculinized faces over feminized faces, whereas "tops" showed no significant preference for masculinized or feminized faces. "Tops" preferred more feminized faces than did "bottoms" and "versatiles." There were significant interactions between sexual self-labels and requirements for partners' positions. "Tops" who required a complementary partner preferred more feminized faces than did those having no requirement. "Bottoms" who required a complementary partner preferred more masculinized faces than did those having no requirement. "Versatiles" requiring a "top" as a romantic partner preferred more masculinized faces than did those requiring "bottoms" or those having no requirement. The findings highlighted the correlation between sexual preferences and partner choices among gay and bisexual men. Stereotypes about gender and masculinity may account for the links between sexual self-labels and partner choice in both sexual self-labeling and preferred labeling of partners based on masculinity.