Facial resemblances between heterosexual, gay, and lesbian couples

Researchers have noted a physical resemblance (homophily) between human sex partners. To date, these studies and their related interpretations have been based on heterosexual couples. The present study compared physical resemblances between gay, lesbian, and heterosexual couples, using 40 photographs of each from national newspapers, which were rated by 34 men and 56 women (M age = 53 yr., SD = 12.1). Half the photographs were of actual couples and half were randomly mixed within each group. Actual couples were rated as significantly more similar in appearance than random pairings of people. Ratings of similarity were significantly higher (indicating greater perceived homophily) for gay couples than heterosexual couples, while there was no statistically significant difference in similarity ratings between lesbian couples versus gay and heterosexual couples. The results were interpreted in terms of evolutionary and parental imprinting hypotheses.