Saudino K J, Pedersen N L, Lichtenstein P, McClearn G E, Plomin R
Center for Developmental and Health Genetics, Pennsylvania State University, USA.
J Pers Soc Psychol. 1997 Jan;72(1):196-206. doi: 10.1037//0022-3514.72.1.196.
Previous research in the Swedish Adoption/Twin Study of Aging (SATSA) has found genetic influences on life events (R. Plomin, P. Lichtenstein, N.L. Pedersen, G.E. McClearn, & J.R. Nesselroade, 1990). The present study extends this finding by examining sex differences in genetic and environmental contributions to life events and by examining personality as a mediator of genetic influences on life events in SATSA. Analyses were based on 320 twin pairs, including identical and fraternal twins reared together and apart (mean age = 58.6 years). Controllable, desirable, and undesirable life events were revealed significant genetic variance for women. There was no significant genetic variance for either sex for uncontrollable events. Multivariate analyses of personality (as indexed by Neuroticism, Extraversion, and Openness to Experience) and life events suggest that all of the genetic variance on controllable, desirable, and undesirable life events for women is common to personality. Thus, in this sample of older adult women, genetic influences on life events appear to be entirely mediated by personality.
瑞典老年收养/双胞胎研究（SATSA）之前的研究发现了基因对生活事件的影响（R. 普洛明、P. 利希滕斯坦、N.L. 佩德森、G.E. 麦克兰和J.R. 内塞尔罗德，1990）。本研究通过考察基因和环境对生活事件影响的性别差异，以及将人格作为SATSA中基因对生活事件影响的中介因素进行研究，扩展了这一发现。分析基于320对双胞胎，包括一起抚养和分开抚养的同卵双胞胎和异卵双胞胎（平均年龄 = 58.6岁）。可控的、合意的和不合意的生活事件显示出女性存在显著的基因变异。不可控事件在两性中均无显著的基因变异。对人格（以神经质、外向性和经验开放性为指标）和生活事件的多变量分析表明，女性可控的、合意的和不合意的生活事件的所有基因变异在人格方面是共同的。因此，在这个老年女性样本中，基因对生活事件的影响似乎完全由人格介导。
