MULTIVARIATE PATH-ANALYSIS OF SPECIFIC COGNITIVE-ABILITIES IN THE COLORADO-ADOPTION-PROJECT
MULTIVARIATE PATH-ANALYSIS OF SPECIFIC COGNITIVE-ABILITIES IN THE COLORADO-ADOPTION-PROJECT
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DOI：
10.1007/bf01065482
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发表时间：
1986-01-01
影响因子：
2.6
通讯作者：
DEFRIES, JC
中科院分区：
文献类型：
--
作者：
RICE, T;FULKER, DW;DEFRIES, JC
遗传和环境传播的多变量路径模型拟合到特定的认知能力数据（言语，空间，感知速度和视觉记忆），并使用最大似然估计程序进行评估。在这第一个多变量行为遗传分析的收养数据，文化传播建模通过父母的表型，每个父母的表型被允许影响后代的所有性状，并容纳了交配和交叉交配。初步分析的结果表明，选择性安置是缺席这项研究。当完整的模型拟合的数据，它被发现，独立交配是更重要的比交叉独立交配，但实质上只有口头能力。遗传传播参数是适度的大小，而文化传播是既小又不重要。一个简化的模型，其中文化传播和基因型环境相关性被限制为零提供了一个很好的拟合数据。遗传和环境相关矩阵的结构分析表明，一个强大的遗传一般因素和一个类似的，但较弱的环境因素。遗传传递参数的检查表明，儿童早期和成年期之间的遗传连续性可能对语言能力，空间能力和感知速度有很大影响。
A multivariate path model of genetic and environmental transmission was fitted to specific cognitive abilities data (verbal, spatial, perceptual speed, and visual memory) and evaluated using a maximum-likelihood estimation procedure. In this first multivariate behavioral genetic analysis of adoption data, cultural transmission was modeled via parental phenotypes, each parental phenotype being allowed to affect all traits in the offspring, and assortative mating and cross-assortative mating were accommodated. Results of a preliminary analysis indicated that selective placement is absent in this study. When the full model was fitted to the data, it was found that assortative mating is more important than cross-assortative mating but is substantial only for verbal ability. Genetic transmission parameters are modest in size, whereas cultural transmission is both small and nonsignificant. A simplified model in which cultural transmission and genotype-environment correlation are constrained to be zero provided a good fit to the data. Analyses of the structures of genetic and environmental correlation matrices indicated a strong genetic general factor and a similar, but weaker, environmental factor. Inspection of the genetic transmission parameters suggests that genetic continuity between early childhood and adulthood may be substantial for verbal ability, spatial ability, and perceptual speed.