Despite consistent links between personality traits and poor sleep, little is known about genetic and environmental influences that may produce them. This study examined how much genetic background and environmental experiences contributed to phenotypic linkages between personality and subjective sleep quality. Seven hundred and thirty-four twin pairs from the Minnesota Study of Twin Aging and Development rated their sleep quality and provided personality reports. Bi-variate analyses revealed that genetic factors accounted for the majority of observed associations between subjective sleep quality and traits, but also that non-shared environmental experience played a role that varied across traits. The findings strongly implicate genotype in tying subjective sleep quality to personality variation, alongside non-shared environmental influences, and suggest indicate influences unique to individual traits.

尽管人格特质与不良睡眠之间存在着始终如一的联系，但对于可能产生这些特质的遗传和环境影响知之甚少。这项研究检查了多少遗传背景和环境经验促成人格与主观睡眠质量之间的表型联系。来自明尼苏达州双胞胎衰老与发展研究的743对双胞胎对他们的睡眠质量进行了评估，并提供了个性报告。双变量分析表明，遗传因素占观察到的主观睡眠质量和性状之间的大多数关联，但非共享的环境经验在各个性状之间起着不同的作用。这些发现强烈暗示了基因型将主观睡眠质量与人格差异以及非共享的环境影响联系在一起，