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
Causes of sexual violence experience an increase in almost all forms of violence, including sexual violence. Many of the factors operating at a national level have an international dimension. Global trends, for instance towards free trade, have been accompanied by an increase in the movement around the world of women and girls for labor, including for sex work. Economic structural adjustment programmes, drawn up by international agencies, have accentuated poverty and unemployment in a number of countries, thereby increasing the likelihood of sexual trafficking and sexual violence, something particularly noted in Central America, the Caribbean and parts of Africa. The "feminist theory of male-female