Department of Psychology, University of Southern California, Los Angeles, CA 90089-1061, USA.
Psychol Med. 2011 Mar;41(3):589-600. doi: 10.1017/S0033291710000966. Epub 2010 May 20.
The current study investigates whether the underlying factor structure of psychopathic personality traits found in adults is similar to that in children and what the extent of the genetic and environmental influences are on these psychopathic traits.
Psychopathic personality traits were assessed in a community sample of 1219 twins and triplets (age 9-10 years) through caregiver reports of each child's behavior using the Child Psychopathy Scale (CPS).
Confirmatory factor analyses revealed an optimal two-factor solution (callous/disinhibited and manipulative/deceitful) to the CPS subscales. Bivariate genetic modeling of the two computed factor scores revealed significant genetic as well as unique environmental influences on psychopathic personality traits in both boys and girls, with heritability estimates of 0.64 and 0.46, respectively, in boys and 0.49 and 0.58, respectively, in girls. No shared environmental influences on psychopathic personality traits were found.
The relationship between the two factors was mediated by both genetic and unique environmental factors common to both traits.
本研究旨在探讨成年人和儿童的精神变态人格特质的潜在因素结构是否相似,以及这些精神变态特质的遗传和环境影响程度。
通过使用儿童精神病理量表(CPS),对 1219 对双胞胎和三胞胎(年龄为 9-10 岁)的社区样本中的儿童行为进行了精神变态人格特质评估。
验证性因素分析显示,CPS 分量表的最佳两因素解(冷漠/抑制和操纵/欺骗)。对两个计算出的因子得分的双变量遗传建模表明,男孩和女孩的精神变态人格特质都受到显著的遗传和独特环境的影响,男孩的遗传度估计分别为 0.64 和 0.46,女孩的遗传度估计分别为 0.49 和 0.58。未发现精神变态人格特质的共享环境影响。
两个因素之间的关系是由两个特质共有的遗传和独特环境因素共同介导的。