Kanazawa Satoshi, Vandermassen Griet
Interdisciplinary Institute of Management, London School of Economics and Political Science, Houghton Street, London WC2A 2AE, UK.
J Theor Biol. 2005 Apr 21;233(4):589-99. doi: 10.1016/j.jtbi.2004.11.009. Epub 2004 Dec 24.
In his extreme male brain theory of autism, Baron-Cohen postulates that having a typically male brain was adaptive for ancestral men and having a typically female brain was adaptive for ancestral women. He also suggests that brain types are substantially heritable. These postulates, combined with the insight from the Trivers-Willard hypothesis regarding parental ability to vary offspring sex ratio, lead to the prediction that people who have strong male brains should have more sons than daughters, and people who have strong female brains should have more daughters than sons. The analysis of the 1994 US General Social Survey data provides support for this prediction. Our results suggest potentially fruitful extensions of both Baron-Cohen's theory and the Trivers-Willard hypothesis.
在其关于自闭症的极端男性大脑理论中，巴伦 - 科恩假定具有典型男性大脑对远古男性具有适应性，而具有典型女性大脑对远古女性具有适应性。他还提出大脑类型具有显著的遗传性。这些假定，结合特里弗斯 - 威拉德假说中关于父母改变后代性别比例能力的见解，得出这样的预测：具有强烈男性大脑的人儿子应多于女儿，而具有强烈女性大脑的人女儿应多于儿子。对1994年美国综合社会调查数据的分析为这一预测提供了支持。我们的结果表明，巴伦 - 科恩的理论和特里弗斯 - 威拉德假说都有潜在的富有成果的拓展。
