The orgasm gap or pleasure gap is the disparity in sexual satisfaction—specifically the unequal frequency in achieving orgasm during sexual encounters—between heterosexual men and women. Across every demographic that has been studied, women report the lowest frequency of reaching orgasm during sexual encounters with men. Researchers believe that multiple causes contribute to the orgasm gap. Orgasm gap researcher Laurie Mintz argues that the primary reason for this form of gender inequality is due to "our cultural ignorance of the clitoris" and that it is commonplace to "mislabel women's genitals by the one part (the vagina) that gives men, but not women, reliable orgasms."