Prenatal hormones and sexual orientation Only 23% of childhood gender problems will result in transsexuality in adulthood. Drawing on some transsexualism cases, Garcia-Falgueras and Swaab state that "[f]rom these examples it appears that the direct action of testosterone on the developing brain in boys and the lack of such action on the developing brain in girls are crucial factors in the development of male and female gender identity and sexual orientation ... ." Countless studies have been run on peripheral levels of sex steroids in male and female homosexuals, a considerable number of which claimed to find "less 'male hormone' and/or more 'female hormone' in
Sexual desire and intimate relationships primary goal of sexual desire. It has also been suggested that women are more likely than men to develop a “relational” or “person-centered” orientation to sexual desire, whereas men are more likely to adopt a “recreational” or “body-centered” orientation to sexuality. These results further support the suggestion that despite generally consistent definitions of sexual desire, perceived differing end goals of sexual desire may exist between the sexes. In keeping with providing definitions of sexual desire consistent with those of theorists, both men and women have consistently expressed their beliefs that the causes of male sexual desire differ from female causes