how can someone write a whole chapter about behavioral genetics and not mention twin studies? (except re. gays.): http://books.google.com/books?id=HUBe0wjowLMC …
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@hbdchick Doesn't surprise me. I'll just take your word for it and waste my time on a more informative book!Thanks. Twitter will use this to make your timeline better. UndoUndo
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