Distinction between biological and social influences is in some senses false. All our behavior is controlled by our brain and, in this sense, is biologically based. (Hines, Melissa, PhD. Brain Gender. p 3-6. NY:Oxford University Press, 2004.)

Postulates that the way in which boys are taught about sexual behavior and the psychology of human love is deeply flawed. (Gurian, Michael. The Wonder of Boys. p 221-247. NY: Jeremy P. Tarcher/Putnam, 1996.)

The hypothalamus is the brain area related to sexual behaviors. The desire for sex arises in the hypothalamus, stimulated by hormones (especially testosterone). Males have 10-20 times higher levels of testosterone. (Pease, Barbara and Allan. Why Men Don’t Listen and Women Can’t Read Maps. p 183-200. NY: Broadway Books, 1998.)

The hypothalamus, part of the limbic system, regulates the four Fs: feeding, fleeing, fighting, and sexual activity. It is influenced by sex hormones prior to birth. (Durden-Smith, Jo, and Diane deSimone. Sex and the Brain. p 39-41. NY:Arbor House Publishing, 1983.)