Bogaert Anthony F, Cairney John
Department of Community Health Sciences, Brock University, St Catharines, Canalda L2S 3A1.
J Biosoc Sci. 2004 Jan;36(1):19-37. doi: 10.1017/s0021932004006030.
A birth order and sexual orientation relationship has been demonstrated numerous times in men, but a related variable, parental age (i.e. age of parents when the participant was born), has been less studied and has demonstrated contradictory results. In this research, the relations among birth order, parental age and sexual orientation were examined in a national probability sample of the US (Kessler, 1994; Kessler et al., 1994) and in a Canadian sample of homosexual and heterosexual men closely matched on demographic characteristics (Blanchard & Bogaert, 1996a). In both studies, an interaction between birth order and parental age was observed in men, such that there was positive association between number of older siblings and the likelihood of homosexuality, but this association weakened with increasing parental age. No significant effects were observed for women. The results are discussed in relation to recent theories of the birth order/sexual orientation relationship.
出生顺序与性取向之间的关系在男性中已被多次证实，但一个相关变量，即父母年龄（即参与者出生时父母的年龄），研究较少且结果相互矛盾。在本研究中，在美国的一个全国概率样本（凯斯勒，1994年；凯斯勒等人，1994年）以及在一个加拿大同性恋和异性恋男性样本中，对出生顺序、父母年龄和性取向之间的关系进行了研究，该加拿大样本在人口统计学特征上紧密匹配（布兰查德和博加特，1996a）。在这两项研究中，均观察到男性出生顺序与父母年龄之间存在交互作用，即哥哥姐姐的数量与同性恋可能性之间呈正相关，但这种关联随着父母年龄的增加而减弱。未观察到女性有显著影响。将结合出生顺序/性取向关系的最新理论对结果进行讨论。
