Ever since 1948 when Alfred Kinsey launched modern sex research, one finding has been confirmed and re-confirmed over and over again. Compared with men, women are considerably less likely to have orgasms. Men report orgasms in approximately 95 percent of heterosexual encounters, but for women, depending on the study, the figure ranges from only 50 to 70 percent.
Why? Two possibilities.
Something about the women, or something about the sex.
