Maintenance of genetic variation in personality through control of mental mechanisms: a test of trust, extraversion, and agreeableness

Kai Hiraishi, Shinji Yamagata, Chizuru Shikishima, Juko Ando

研究成果: Article査読

55 被引用数 (Scopus)

抄録

Since natural selection produces genetically homogeneous populations with regard to adaptively important traits, the relatively high genetic variance associated with human personality is an enigma. In this article, we propose that humans adaptively control the activation of domain-specific mental mechanisms in accordance with personality. This process functions to reduce fitness differences among individuals with different genetic backgrounds associated with personality. Such control would facilitate the evolution of heritable personality traits. We conducted a twin study, showing that the level of general trust (trust of strangers) is controlled not only by environmental factors but also by personality factors, thus producing reactive heritability of general trust. This result supports our hypothesis.

本文言語English
ページ(範囲)79-85
ページ数7
ジャーナルEvolution and Human Behavior
29
2
DOI
出版ステータスPublished - 2008 3月

ASJC Scopus subject areas

  • 生態、進化、行動および分類学
  • 実験心理学および認知心理学
  • 人文科学(その他)

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