A theoretical study on cultural evolution of human maladaptive behaviors

• Project/Area Number: 18770217
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Evolutionary biology
• Research Institution: The University of Tokyo
• Principal Investigator: IHARA Yasuo The University of Tokyo, 大学院理学系研究科, 講師 (90376533)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥300,000); Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2007: ¥900,000 (Direct Cost: ¥900,000); Fiscal Year 2006: ¥1,700,000 (Direct Cost: ¥1,700,000)
• Keywords: 文化進化 / 行動学 / 進化 / 人類学 / 名声 / 性的対立 / 性拮抗的共進化 / 配偶者選択 / 性的刷り込み様現象 / 配偶システム / 雄による子の世話 / 雌の多重交配

Research Abstract

階層のある社会における文化伝達の過程を数理モデル化し、繁殖率や生存率を犠牲にして社会的地位の獲得に努める行動が、文化伝達によって普及するための条件を求めた。また、ヒトを含む動物における配偶・繁殖行動の進化と、個体の利得を犠牲にしてグループの利得を増大させる行動の進化について数理モデルを用いた研究を行った。さらに、ヒトの配偶者選択における社会学習の影響について検討するため、日本人の既婚・未婚カップルを対象とした実験を行った。

Research Products

• [Journal Article] Emergence of cooperation in public goods games (2009)
  • Author(s): Kurokawa, S., and Ihara Y
  • Journal Title: Proceedings of the Royal Society B 276 Pages: 1379-1384
  • Peer Reviewed
• [Journal Article] Emergence of cooperation in public goods games (2009)
  • Author(s): Shun Kurokawa
  • Journal Title: Proceedings of the Royal Society B 276 Pages: 1379-1384
  • Peer Reviewed
• [Journal Article] Spread of costly prestige-seeking behavior by social learning (2008)
  • Author(s): Ihara, Y
  • Journal Title: Theoretical Population Biology 73 Pages: 148-157
  • Peer Reviewed
• [Journal Article] Spread of costly prestige-seeking behavior by social learning (2008)
  • Author(s): Yasuo Ihara
  • Journal Title: Theoretical Population Biology 73 Pages: 148-157
  • Peer Reviewed
• [Journal Article] A theoretical study on the evolution of male parental care and female multiple mating: effects of female mate choice and male care bias (2007)
  • Author(s): Seki, M., Wakano, J. Y., and Ihara, Y
  • Journal Title: Journal of Theoretical Biology 247 Pages: 281-296
  • Peer Reviewed
• [Journal Article] 雄による子の世話と配偶システムの進化 (2007)
  • Author(s): 井原泰雄
  • Journal Title: 生物科学 58 Pages: 68-76
  • Peer Reviewed
• [Journal Article] A theoretical study on the evolution of male parental care and female multiple mating: Effects of female mate choice and male care bias (2007)
  • Author(s): Motohide Seki, Joe Yuichiro Wakano, and Yasuo Ihara
  • Journal Title: Journal of Theoretica1 Biology 247 Pages: 281-296
  • Peer Reviewed
• [Presentation] 性的葛藤による配偶者選択の進化 (2008)
  • Author(s): 木村麻里子、井原泰雄
  • Organizer: 第18回日本数理生物学会大会
  • Place of Presentation: 京都
• [Presentation] Spread of costly status-seeking behavior by social learning: mathematical models (2008)
  • Author(s): Ihara, Y
  • Organizer: Human Behavior and Evolution Society 20th Annual Conference
  • Place of Presentation: Kyoto
• [Presentation] Parental influence on mate choice (2008)
  • Author(s): Nojo, S., Tamura, S., and Ihara, Y
  • Organizer: Human Behavior and Evolution Society 20th Annual Conference
  • Place of Presentation: Kyoto
• [Presentation] Spread of costly status-seeking behavior by social learning : mathematical models (2008)
  • Author(s): Yasuo Ihara
  • Organizer: Human Behavior and Evolution Society 20th Annual Conference
  • Place of Presentation: 京都
• [Presentation] Parental influence on mate choice (2008)
  • Author(s): Saori Nojo
  • Organizer: Human Behavior and Eiolution Society 20th Annual Conference
  • Place of Presentation: 京都
• [Presentation] 性的葛藤による配偶者選択に関する数理モデルを用いた理論的研究 (2008)
  • Author(s): 木村麻里子
  • Organizer: 日本動物行動学会第27回大会
  • Place of Presentation: 金沢
• [Presentation] 配偶者選択における親の影響 (2008)
  • Author(s): 能城沙織
  • Organizer: 第62回日本人類学会大会
  • Place of Presentation: 名古屋
• [Presentation] コストをともなう地位追求行動の普及 : 数理モデルによる分析 (2008)
  • Author(s): 井原泰雄
  • Organizer: 第81回日本社会学会大会
  • Place of Presentation: 仙台
• [Presentation] 配偶者選択における親の影響 (2007)
  • Author(s): 能城沙織、北村ゆみ、田村智、井原泰雄
  • Organizer: 日本人類学会
  • Place of Presentation: 新潟
  • Year and Date: 2007-10-07
• [Presentation] 文化伝達と言語の起源 (2007)
  • Author(s): 井原泰雄
  • Organizer: 日本進化学会
  • Place of Presentation: 京都
  • Year and Date: 2007-09-02
• [Presentation] Exaggeration of costly prestige-seeking behavior by cultural evolution (2007)
  • Author(s): Ihara, Y
  • Organizer: Joint Annual Meetings of The Society for Mathematical Biology and The Japanese Society for Mathematical Biology
  • Place of Presentation: San Jose, USA
• [Presentation] オス投資と配偶戦略の進化について: 個体ベースシミュレーションによる検討 (2006)
  • Author(s): 関元秀、井原泰雄
  • Organizer: 第25回日本動物行動学会大会
  • Place of Presentation: 岡山