Casto S D, DeFries J C, Fulker D W
Institute for Behavioral Genetics, University of Colorado at Boulder 80309-0447, USA.
Behav Genet. 1995 Jan;25(1):25-32. doi: 10.1007/BF02197239.
Wechsler Intelligence Scale for Children--Revised (WISC-R) factor scores (Verbal Comprehension, Perceptual Organization, and Freedom from Distractibility) were obtained from 574 twin pairs in the Colorado Reading Project and subjected to multivariate genetic analysis. Variances were partitioned into components common to the three WISC-R factors and to those specific to each factor. Substantial commonality, both genetic and environmental, was found among the three factors. The full model fit the data well, and estimates of heritability and environmentality indicated that about half of the phenotypic variance for each factor is due to additive genetic effects. These results were compared to those obtained in a previous twin study of the three Wechsler Adult Intelligence Scale (WAIS) factors by Tambs et al. (1986).
从科罗拉多阅读项目的574对双胞胎中获取了韦氏儿童智力量表修订版(WISC-R)的因子分数(言语理解、知觉组织和注意力集中),并对其进行了多变量遗传分析。方差被划分为WISC-R三个因子共有的成分以及每个因子特有的成分。在这三个因子之间发现了显著的遗传和环境共性。完整模型与数据拟合良好,遗传率和环境率估计表明,每个因子约一半的表型方差归因于加性遗传效应。将这些结果与Tambs等人(1986年)之前对韦氏成人智力量表(WAIS)三个因子进行的双胞胎研究结果进行了比较。