Meier R J, Jamison P L
Department of Anthropology, Indiana University, Bloomington.
Soc Biol. 1990 Spring-Summer;37(1-2):128-36. doi: 10.1080/19485565.1990.9988752.
This study investigated assortative mating in a series of monozygotic twins in terms of anthropometric variables. Initially the twins were analyzed independent of each other, and the results showed fairly clear homogamy among female MZ twins and their spouses, after correcting for age. Further, when stature was partialled out, several anthropometric measures remained significantly correlated. The results for male MZ twins and their spouses were not nearly so clear-cut. A second analysis treated the co-twins together, and once again, the female MZ sets tended to show assortative mate choice for stature while the male MZ twins/spouses were not significantly correlated. A follow-up analysis investigated whether husbands of the female twins were correlated to each other, and negative results were found for all of the 46 anthropometric variables. An apparent contradiction was resolved in the case of stature by regressing spouse stature against that of the co-twins. It was found that although each of the twins was assortatively mating, one member of the twin set consistently married a taller husband, but the difference was not constant. This had the effect of producing divergent regression lines.
本研究从人体测量学变量的角度对一系列同卵双胞胎的选型交配进行了调查。最初，双胞胎是相互独立分析的，结果显示，在校正年龄后，女性同卵双胞胎及其配偶之间存在相当明显的同型交配现象。此外，当身高因素被排除后，几项人体测量指标仍显著相关。男性同卵双胞胎及其配偶的结果则没有那么明确。第二次分析将双胞胎共同处理，结果再次表明，女性同卵双胞胎在身高方面倾向于表现出选型配偶选择，而男性同卵双胞胎/配偶之间没有显著相关性。一项后续分析调查了女性双胞胎的丈夫之间是否相关，结果发现所有46项人体测量变量均呈阴性。通过将配偶身高与双胞胎的身高进行回归分析，解决了身高方面的一个明显矛盾。研究发现，虽然每对双胞胎都在进行选型交配，但双胞胎中的一方总是嫁给更高的丈夫，但差异并不恒定。这导致了不同的回归线。
