遗传和环境对反应时间个体内变异性的影响。

Genetic and environmental influences on intraindividual variability in reaction time.

作者信息

Finkel Deborah, McGue Matt

机构信息

School of Social Sciences, Indiana University Southeast, New Albany, Indiana 47150, USA.

出版信息

Exp Aging Res. 2007 Jan-Mar;33(1):13-35. doi: 10.1080/03610730601006222.

DOI:10.1080/03610730601006222

PMID:17132562

Abstract

Reaction time (RT) data from the Minnesota Twin Study of Adult Development and Aging were used to investigate genetic and environmental influences on intraindividual variability in RT. The sample was 738 individuals (aged 27 to 95 years), including 185 monozygotic (MZ) and 131 dizygotic (DZ) twin pairs. Two RT factors were created: decision time and movement time. Age-corrected heritability estimates were 40% for mean RT; 21% for intraindividual variability in movement time; and 0% for intraindividual variability in decision time. Multivariate analysis indicated that all genetic variance in the RT measures was shared among measures; environmental variance was specific to each RT measure.

摘要

来自明尼苏达成人发展与衰老双胞胎研究的反应时间（RT）数据被用于调查基因和环境对反应时间个体内变异性的影响。样本包括738名个体（年龄在27至95岁之间），其中有185对同卵双胞胎（MZ）和131对异卵双胞胎（DZ）。创建了两个反应时间因素：决策时间和动作时间。经年龄校正后的遗传率估计值为：平均反应时间40%；动作时间个体内变异性21%；决策时间个体内变异性0%。多变量分析表明，反应时间测量中的所有遗传方差在各测量指标间共享；环境方差则特定于每个反应时间测量指标。