Biology and sexual orientation INAH3 weight for the heterosexual male brains was significantly larger than for the heterosexual female brains, while the results for the gay male group were between those of the other two groups but not quite significantly different from either. The neuron count also found a male-female difference in INAH3, but found no trend related to sexual orientation. A 2010 study, Garcia-Falgueras and Swaab asserted that "the fetal brain develops during the intrauterine period in the male direction through a direct action of testosterone on the developing nerve cells, or in the female direction through the absence of this hormone surge.
Causes of sexual violence Causes of sexual violence Causes of sexual violence are debated and explanations of the cause include military conquest, socioeconomics, anger, power, sadism, sexual pleasure, psychopathy, ethical standards, laws, attitudes toward the victims and evolutionary pressures. Clinical psychologist Nicholas Groth has described several different types of rape. A detailed conceptual analysis shows that objectification might underlie denial of agency and personhood that leads to rape. The goal of this rapist is to humiliate, debase and hurt their victim; they express their contempt for their victim through physical violence and profane language. For these rapists, sex is a weapon to defile and