Guys with older brothers are about 47% more likely to be gay. New meta-analysis of 26 studies (about 20,000 subjects)https://twitter.com/KirkegaardEmil/status/926673543349366785 …
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Could this have to do anything with the principle of divergence?http://www.npr.org/2010/11/18/131424595/siblings-share-genes-but-rarely-personalities …
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