Billig J P, Hershberger S L, Iacono W G, McGue M
University of Minnesota, Minneapolis 55455, USA.
Behav Genet. 1996 Nov;26(6):543-54. doi: 10.1007/BF02361227.
The relationship between life events and personality was investigated in the Minnesota Twin/Family Study, using 216 monozygotic and 114 dizygotic 17-year-old male twin pairs. Participants completed a life events interview designed for adolescents and the Multidimensional Personality Questionnaire. Life events were categorized into three types: life events to which all members of a family would be subject and those affecting an individual, which can be broadly construed as either nonindependent or independent. Univariate genetic model fitting indicated the presence of significant genetic effects (h2 = 49%) for nonindependent nonfamily life events but not for the other two types of life events. Bivariate genetic model fitting further confirmed that the significant phenotypic correlation between nonindependent life events and personality is in part genetically mediated. Specifically, the findings suggest that genetically influenced individual differences in constraint play a substantial role in life events whose occurrence is not independent of the individual's behavior.
在明尼苏达双生子/家庭研究中，对216对同卵和114对异卵17岁男性双胞胎进行了生活事件与人格关系的调查。参与者完成了一份专为青少年设计的生活事件访谈以及多维人格问卷。生活事件分为三种类型：所有家庭成员都会经历的生活事件以及影响个体的生活事件，大致可分别理解为非独立或独立的生活事件。单变量遗传模型拟合表明，非独立的非家庭生活事件存在显著的遗传效应（h2 = 49%），而其他两种生活事件类型则不存在。双变量遗传模型拟合进一步证实，非独立生活事件与人格之间显著的表型相关性部分是由遗传介导的。具体而言，研究结果表明，受遗传影响的个体在约束方面的差异在那些发生与个体行为无关的生活事件中起了很大作用。
