Her findings reveal three areas that show a statistically marked difference. Starting with the obvious first, “for gender identity, the differences are huge. Most men think of themselves as men and most women don’t,” she states. “The second thing is sexual orientation. Most women are interested in men, and most men aren’t.” The third one is childhood play behavior. Studying girls with congenital adrenal hyperplasia, with higher than normal levels of testosterone, she found, “Rough-and-tumble play is increased in girls exposed to androgens. They like boys’ toys a bit more, girls’ toys a bit
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