2. The goal: “To assess orgasm occurrence during sexual activity across sexual orientation categories.”
3. In a questionnaire, participants reported their gender, self-identified sexual orientation, and “percentage of the time they experience orgasm when having sex with a familiar partner.”
The possible orientation categories listed included heterosexual, gay/lesbian, and bisexual — queer and asexual identities were not listed. The possible gender categories only included “male” and “female.” The study surveyed 1,350 self-identified single females and 1,497 self-identified single males. All the participants also had sexual experiences that occurred in the last 12 months.
6. For women, the rate of orgasm varied significantly by sexual orientation.
Results listed: heterosexual women 61.6%, lesbian women 74.7%, and bisexual women 58.0%.