Bogaert Anthony F, Blanchard Ray, Crosthwait Lesley E
Department of Community Health Sciences, Brock University, St. Catharines, ON, Canada.
Behav Neurosci. 2007 Oct;121(5):845-53. doi: 10.1037/0735-7044.121.5.845.
Recent evidence indicates that 2 of the most consistently observed correlates of men's sexual orientation--handedness and older brothers--may be linked interactively in their prediction of men's sexual orientation. In this article, the authors studied the relationship among handedness, older brothers, and men's sexual orientation in the large and historically significant database originally compiled by Alfred C. Kinsey and his colleagues (A. C. Kinsey, W. B. Pomeroy, & C. E. Martin, 1948). The results demonstrated that handedness moderates the relationship between older brothers and sexual orientation. Specifically, older brothers increased the odds of homosexuality in right-handers only; in non-righthanders, older brothers did not affect the odds of homosexuality. These results refine the possible biological explanations reported to underlie both the handedness and older brother relationships to men's sexual orientation. These results also suggest that biological explanations of men's sexual orientation are likely relevant across time, as the Kinsey data comprise an older cohort relative to modern samples.
最近的证据表明，男性性取向中两个最常被观察到的相关因素——利手和哥哥——在预测男性性取向时可能存在交互联系。在本文中，作者在最初由阿尔弗雷德·C·金赛及其同事汇编的庞大且具有历史意义的数据库中，研究了利手、哥哥与男性性取向之间的关系（A.C.金赛、W.B.波默罗伊和C.E.马丁，1948年）。结果表明，利手调节了哥哥与性取向之间的关系。具体而言，哥哥仅增加了右利手男性成为同性恋的几率；在非右利手男性中，哥哥并未影响其成为同性恋的几率。这些结果完善了据报道作为利手和哥哥与男性性取向关系基础的可能生物学解释。这些结果还表明，男性性取向的生物学解释可能在不同时期都具有相关性，因为相对于现代样本，金赛的数据包含了一个更年长的队列。
