Schwartz Christine R, Graf Nikki L
Department of Sociology, University of Wisconsin-Madison, 1180 Observatory Drive, Madison, WI 53706.
Demogr Res. 2009 Dec 8;21:843-878. doi: 10.4054/demres.2009.21.28.
Same-sex couples are less likely to be homogamous than different-sex couples on a variety of characteristics including race/ethnicity, age, and education. This study confirms results from previous studies which used 1990 U.S. census data and extends previous analyses to examine changes from 1990 to 2000. We find that same-sex male cohabitors are generally the least likely to resemble one another, followed by same-sex female cohabitors, different-sex cohabitors, and different-sex married couples. Despite estimated growth in the numbers of same-sex couples in the population and the increasing acceptance of same-sex unions, we find little evidence of diminishing differences in the resemblance of same- and different-sex couples between 1990 and 2000, with the possible exception of educational homogamy.
在包括种族/民族、年龄和教育程度等多种特征方面，同性伴侣比异性伴侣更不可能具有同质性。本研究证实了此前使用1990年美国人口普查数据的研究结果，并将先前的分析进行扩展，以考察1990年至2000年的变化情况。我们发现，同性男性同居伴侣通常最不可能彼此相似，其次是同性女性同居伴侣、异性同居伴侣和异性已婚夫妇。尽管据估计人口中同性伴侣的数量有所增长，且同性结合越来越被接受，但我们几乎没有发现证据表明1990年至2000年期间同性和异性伴侣在相似性方面的差异有所缩小，教育同质性可能是个例外。
