Quote:
Originally Posted by SteppenWolf
Studies performed over the last several decades have found that gay men tend to have a greater number of older male siblings than do straight men. In a recent analysis of data from 14 studies involving 10,000 individuals, a group led by Ray Blanchard, a professor of psychology at the University of Toronto, determined that a large number of older brothers is a significant predictor of male homosexuality [24][25].
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"Nurture" is not what the Scientist involved in those studies concluded. What they actually concluded is that nurture cannot be the cause of this as it only works when the older brothers are of the same mother. With older step brothers, we dont see these results.
http://www.telegraph.co.uk/news/main...26/ixnews.html