I read this whole thread from the beginning, and the big question which arose in me is: in what ways does testosterone affect the brain? How is a person with high T's brain different from a person with low T? Now, this article will probably touch a nerve with left handed people, but it sort of touches on male and female fetuses and their reaction to testosterone in the womb: http://www.nytimes.com/1985/09/24/sc...-the-womb.html interesting food for thought.