Loehlin J C
Behav Genet. 1978 Sep;8(5):415-36. doi: 10.1007/BF01067938.
Three different published heredity-environment analyses of Jencks's summary correlations for IQ have yielded strikingly different results. It is shown empirically that differences in selection of data and in computational procedures and logical inconsistencies in specifying equations are not responsible for the differences in results. Rather, the differences trace to the underlying assumptions made by the various authors. The analyses suggest that the assumptions concerning genetic dominance, assortative mating, and special twin environments were especially critical, while those regarding selective placement and different modes of environmental transmission were not.
针对詹克斯关于智商的汇总相关性进行的三项不同的已发表遗传-环境分析得出了截然不同的结果。通过实证表明，数据选择、计算程序以及方程设定中的逻辑不一致并非导致结果差异的原因。相反，这些差异可追溯到不同作者所做的潜在假设。分析表明，关于基因显性、选型交配以及特殊双胞胎环境的假设尤为关键，而关于选择性安置和环境传递不同模式的假设则并非如此。
