Petrill Stephen A, Lipton Paul A, Hewitt John K, Plomin Robert, Cherny Stacey S, Corley Robin, DeFries John C
Department of Biobehavioral Health, The Pennsylvania State University, University Park, PA 16802, USA.
Dev Psychol. 2004 Sep;40(5):805-12. doi: 10.1037/0012-1649.40.5.805.
The genetic and environmental contributions to the development of general cognitive ability throughout the first 16 years of life were examined using sibling data from the Colorado Adoption Project. Correlations were analyzed along with structural equation models to characterize the genetic and environmental influences on longitudinal stability and instability. Intraclass correlations reflected both considerable genetic influence at each age and modest shared environmental influence within and across ages. Modeling results suggested that genetic factors mediated phenotypic stability throughout this entire period, whereas most age-to-age instability appeared to be due to nonshared environmental influences.
利用来自科罗拉多收养项目的兄弟姐妹数据,研究了遗传和环境因素对生命最初16年一般认知能力发展的影响。分析了相关性以及结构方程模型,以描述遗传和环境对纵向稳定性和不稳定性的影响。组内相关性反映了每个年龄阶段相当大的遗传影响以及年龄内和年龄间适度的共享环境影响。建模结果表明,遗传因素在整个时期介导了表型稳定性,而大多数年龄间的不稳定性似乎是由于非共享环境影响。