Genetic and Environmental influences on social behavior : A study from Evolutionary Psychology and Behavior Genetics.

• Project/Area Number: 19730384
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Social psychology
• Research Institution: Kyoto University
• Principal Investigator: HIRAISHI Kai Kyoto University, こころの未来研究センター, 助教 (50343108)
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥3,800,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥600,000); Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2007: ¥1,200,000 (Direct Cost: ¥1,200,000)
• Keywords: 遺伝と環境 / 進化 / 個人差 / 経済ゲーム / 公共財ゲーム / 双生児研究 / 進化心理学 / 行動遺伝学 / 双生児 / 社会的ジレンマ / 社会心理学 / 2D4D / 社会的態度 / 遺伝子

Research Abstract

Genetic and environmental influences on individual differences in economic game was studied with twin sample. We constructed a web-based survey system on which participants took part in a public goods game with the strategy method. The web-study with 282 twins revealed relatively small genetic and common-environmental effects on the response to non-cooperative group members. When other members were cooperative, the responses were influenced by genetic and/or common environmental influences to a certain degree. We also proposed the internal environment theory of personality, which explains the maintenance of genetic variation in personality through natural selection. Based on the hypothesis, we demonstrated that the level of trust towards strangers are influenced by the level of extraversion and agreeableness.

Research Products

• [Journal Article] Is g an entity? A Japanese twin study using syllogisms and intelligence tests. (2009)
  • Author(s): Shikishima, C., Hiraishi K., Yamagata S., Sugimoto, Y
  • Journal Title: Intelligence 37 Pages: 256-257
  • Peer Reviewed
• [Journal Article] Is g an entity? A Japanese twin study using syllogisms and intelligence tests (2009)
  • Author(s): Shikishima, C., Hiraishi K., Yamagata S., Sugimoto, Y, Takemura, R., Ozaki, K., Okada, M., Toda, T., & Ando. T.
  • Journal Title: Intelligence
  • Peer Reviewed
• [Journal Article] Maintenance of genetic variation in personality through Extra- version control of mental mechanisms: a test of trust, extraversion, and agreeableness. (2008)
  • Author(s): Hiraishi, K., Yamagata, S., Shikishima, C., Ando, J.
  • Journal Title: Evolution and Human Behavior 29(2) Pages: 79-85
  • Peer Reviewed
• [Journal Article] Maintenance of Genetic Variation in Personality through Control of Mental Mechanisms (2008)
  • Author(s): Hiraishi, K. Yamagata, S., Shikishima, C., & Ando, J.
  • Journal Title: Evolution and Human Behavior 29 Pages: 79-85
  • Peer Reviewed
• [Presentation] 利他性の個人差には何が影響しているのか (2009)
  • Author(s): 小田亮・平石界・福川康之・福地剛志・松本晶子
  • Organizer: 日本人間行動進化学会第2回大会
  • Place of Presentation: 九州大学
  • Year and Date: 2009-12-12
• [Presentation] 利他性の個人差には何が影響しているのか? (2009)
  • Author(s): 小田亮・平石界・福川康之・福地剛志・松本晶子
  • Organizer: 日本人間行動進化学会第2回大会
  • Place of Presentation: 九州大学
  • Year and Date: 2009-12-12
• [Presentation] 実験経済ゲームにおける個人差と遺伝・環境 (2009)
  • Author(s): 平石界
  • Organizer: 日本社会心理学会第50回大会・日本グループ・ダイナミックス学会第56回大会合同大会
  • Place of Presentation: 大阪大学
  • Year and Date: 2009-10-12
• [Presentation] 実験経済ゲームにおける個人差と遺伝・環境 (2009)
  • Author(s): 平石界
  • Organizer: 日本社会心理学会・日本グループダイナミクス学会・合同大会
  • Place of Presentation: 大阪大学
  • Year and Date: 2009-10-12
• [Presentation] 氏と育ちと進化と文化 (2008)
  • Author(s): 平石界
  • Organizer: 日本心理学会第70回大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2008-09-19
• [Presentation] What constituted one's environment? Proposal of Internal Environment Hypothesis of Personality. (2008)
  • Author(s): Hiraishi K.
  • Organizer: Psychological, Economical and Environmental Rationality (PEER) 2008
  • Place of Presentation: 東京工業大学
  • Year and Date: 2008-01-24
• [Presentation] 公共財ゲームにおける個人差の遺伝環境分析 (2007)
  • Author(s): 平石界・敷島千鶴・安藤寿康
  • Organizer: 人間行勧進化学研究会第9回大会
  • Place of Presentation: 総合研究大学院大学
  • Year and Date: 2007-12-08
• [Presentation] 公共財ゲームにおける遺伝と環境の効果 (2007)
  • Author(s): 平石界・敷島千鶴・安藤寿康
  • Organizer: 日本心理学会第71回大会
  • Place of Presentation: 東洋大学
  • Year and Date: 2007-09-19
• [Book] よくわかる認知科学 (2010)
  • Author(s): 乾敏郎
  • Publisher: ミネルヴァ書房
• [Book] 社会と個人のダイナミクス
  • Author(s): 唐沢穣・村本由紀子・平石界, 他
  • Publisher: 誠信書房(印刷中)
• [Book] 認知の個人差
  • Author(s): 箱田裕司・平石界, 他
  • Publisher: 北大路書房(印刷中)
• [Remarks]
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• [Remarks]
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• [Remarks]
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