The present study examines the association between the General Factor of Personality (GFP) and working memory and its etiology with a behavioral genetic approach. The GFP, which explains the common variance among lower-order personality traits, is considered to reflect social effectiveness. Meanwhile, working memory also plays a significant role in social competence. Hence, we expected a substantial association between the GFP and working memory. A total of 253 Japanese twin pairs (124 monozygotic female; 52 monozygotic male; 28 dizygotic female; 17 dizygotic male; and 32 opposite sex twins) were included in the analyses. Phenotypic analyses confirmed a significant positive correlation between the GFP and working memory. Biometric analysis with a bivariate Cholesky decomposition model showed that the phenotypic correlation derived from additive genetic and non-shared environmental correlations. The present findings are in line with social effectiveness account of the GFP.

本研究通过行为遗传方法检查了一般人格因素 (GFP) 与工作记忆及其病因之间的关联。GFP 解释了低阶人格特征之间的共同差异，被认为反映了社会有效性。同时，工作记忆在社交能力中也起着重要作用。因此，我们预计 GFP 和工作记忆之间存在实质性关联。共有 253 对日本双胞胎（124 对同卵女性；52 对同卵男性；28 对异卵女性；17 对异卵男性；和 32 对异性双胞胎）被纳入分析。表型分析证实了 GFP 和工作记忆之间的显着正相关。使用双变量 Cholesky 分解模型进行的生物特征分析表明，表型相关性源自加性遗传和非共享环境相关性。目前的调查结果与 GFP 的社会效益解释一致。