Study title

Homosexual women are, on average, more masculine in their appearance and behavior than heterosexual women. We hypothesized that their masculinity was influenced by exposure to elevated levels of prenatal androgen during early development. We recruited 199 women (including 67 homosexual women) and measured their masculinity via self-report and observer ratings. Our measure of prenatal androgen exposure was the ratio of the index to ring finger (2D:4D), which is hypothesized to be lower in women exposed to elevated levels of androgens during prenatal development. The included data covers these 199 women and includes their demographic information (age, race, sexual orientation), their self-reported gender nonconformity for childhood and adulthood as measured on the Childhood Gender Nonconformity Scale and Continuous Gender Identity Scale respectively, their observer-rated masculinity, and measurements of their digit lengths by trainees.