I read the section a couple times and the scientists made it clear that they DO NOT know if the brain changes are set in motion before or after birth.

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Sex difference in brain size has been shown to be present at birth (48), and some volumetric data suggest that sex differences in hemispheric asymmetry exist already in the human fetus (49, 50), although other studies failed to detect them (51, 52). Adult patterns of cerebral asymmetry (53), as well some features of regional sexual dimorphism, are detected already in children (54). Cerebral maturation continues, however, after puberty, especially in boys (31), providing a substrate for effects of social/environmental factors. However, to attribute such effects to the present results would require a detailed comprehension of how specific environmental factors relate to the four groups investigated, and how they affect various cerebral circuits. In the light of currently available information this can only be speculative.

Good news is that if this is accurate, they’ll be no selectively aborting gays since i dont know how to perform an MRI in utero.

Really, if there’s already ‘compelling’ evidence that being gay or straight is a biologically fixed trait, what was the point of this study?

“Man will occasionally stumble over the truth, but most of the time he will pick himself up and continue on.”

I fear by next week Narth will post a special article on how SSA is the result of faulty parenting and various LGBT sites will post threads that focus on Bailey’s 1991 twin study.

Great Zeus! I fear some things will never change.

A) The studied brain differences aren’t the result of learned behavior. That’s huge!

B) According to the scientists involved these brain differences don’t appear to be the result of genetics. That’s huge!

C) The other Swedish study from yesterday suggests that SSA is 61% to 66% environment. Once again HUGE!

D) WOW!

Yesterday was seismic for people on every side of the scientific debate.