Hiraishi, Kai

写真a

Affiliation

Faculty of Letters, Department of Humanities and Social Science (Human Relations) （Mita）

Position

Professor

Related Websites

External Links
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Career 【 Display / hide 】

  • 2001.10
    -
    2004.03

    The University of Tokyo, Interfaculty Initiative in Information Studies, Research Associate

  • 2004.04
    -
    2004.09

    The University of Tokyo, Institute of Socio-Information and Communication Studies, Associate Researcher

  • 2004.10
    -
    2007.12

    The University of Tokyo, College of Arts and Scienes, Assistant Professor

  • 2008.01
    -
    2012.03

    Kyoto University, Kokoro Research Center, Program-Specific Assistant Professor

  • 2012.04
    -
    2014.03

    Yasuda Women's University, Department of Psychology, Lecturer

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Academic Degrees 【 Display / hide 】

  • 博士（学術）, The University of Tokyo, 2008.12

    An evolutionary psychological approach to sharing-rule reasoning and trust : General patterns and individual differences

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Research Areas 【 Display / hide 】

  • Humanities & Social Sciences / Social psychology

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Research Keywords 【 Display / hide 】

  • Prosociality

  • Cognitive Biases

  • Evolutionary Psychology

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Papers 【 Display / hide 】

  • Genetic Factors of Individual Differences in Decision Making in Economic Behavior: A Japanese Twin Study using the Allais Problem

    Shikishima, Chizuru, Hiraishi, Kai, Yamagata, Shinji, Ando, Juko, Okada, Mitsuhiro

    FRONTIERS IN PSYCHOLOGY 6   79 - 85 2015.11

    Research paper (scientific journal),  ISSN  1664-1078

  • Heritability of decisions and outcomes of public goods games

    Hiraishi, Kai, Shikishima, Chizuru, Yamagata, Shinji, Ando, Juko

    FRONTIERS IN PSYCHOLOGY 6   79 - 85 2015.04

    Research paper (scientific journal),  ISSN  1664-1078

  • The Watching-Eye Effect on Prosocial Lying

    Oda, Ryo, Kato, Yuta, Hiraishi, Kai

    EVOLUTIONARY PSYCHOLOGY 13 （ 3 ） 711 - 724 2015

    Research paper (scientific journal),  ISSN  1474-7049

  • Personality and altruism in daily life

    Oda, Ryo, Machii, Wataru, Takagi, Shinpei, Kato, Yuta, Takeda, Mia, Kiyonari, Toko, Fukukawa, Yasuyuki, Hiraishi, Kai

    PERSONALITY AND INDIVIDUAL DIFFERENCES 56   206 - 209 2014.01

    Research paper (scientific journal),  ISSN  0191-8869

  • Provision or good genes? Menstrual cycle shifts in women's preferences for short-term and long-term mates' altruistic behavior

    Oda Ryo, Okuda Akari, Takeda Mia, Hiraishi Kai

    Evolutionary Psychology 12 （ 5 ） 888 - 900 2014

    　View Summary

    <p>Men's altruism may have evolved, via female choice, as a signal of either their genetic quality or their willingness to allocate resources to offspring. The possibility that men display altruism to signal their genetic quality may be tested by examining women's preference for men's altruism across the stages of the menstrual cycle. Because women can maximize reproductive benefits by mating with men who have "good genes" on high-fertility versus low-fertility days, women should show a heightened preference for male altruism on high-fertility days compared to low-fertility days, and this heightened preference should be more apparent when women evaluate men for short-term sexual relationships than for long-term committed relationships. The possibility that men display altruism to signal their willingness to provision, as opposed to their genetic quality, may be tested by examining women's preference for men's altruism toward different recipients. More specifically, altruistic behavior toward family members may reflect a willingness to provide resources for kin and, hence, willingness to provision, whereas altruistic behavior toward strangers may function as an honest signal of genetic quality. In two samples of young women (Ns = 131 and 481), we found no differences between high- and low-fertility participants in preference for men's altruism, and women preferred men's altruism more in long-term than short-term relationships. The findings suggest that men's altruistic behavior functions as a signal of willingness to provide resources rather than genetic quality.</p>

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Papers, etc., Registered in KOARA 【 Display / hide 】

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Presentations 【 Display / hide 】

  • Genetic overlapping among intelligence, educational attainment, occupational status, marriage, and having children: Japanese female twins

    Shikishima, Chizuru, Yamagata, Shinji, Hiraishi, Kai, Kijima, Nobuhiko, Ando, Juko

    BEHAVIOR GENETICS, 

    2013.11

  • Long-term genetic effects of working memory on cognition and personality in adolescence and adulthood: A 14-year longitudinal study of twins

    Ando, Juko, Shikishima, Chizuru, Kijima, Nobuhiko, Hiraishi, Kai, Takahashi, Yusuke, Yamagata, Shinji

    BEHAVIOR GENETICS, 

    2013.11

  • Genetics of decision making: A Japanese twin study using the Allais problem

    Shikishima, Chizuru, Hiraishi, Kai, Yamagata, Shinji, Ando, Juko, Okada, Mitsuhiro

    BEHAVIOR GENETICS, 

    2012.11

  • Whose happiness increases, and why? A longitudinal twin analysis over a decade-long interval

    Shikishima, Chizuru, Yamagata, Shinji, Hiraishi, Kai, Ando, Juko

    BEHAVIOR GENETICS, 

    2011.11

  • Heritability of cooperative behavior on a public goods game

    Hiraishi, Kai, Shikishima, Chizuru, Ando, Juko

    BEHAVIOR GENETICS, 

    2010.11

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Research Projects of Competitive Funds, etc. 【 Display / hide 】

  • Building the groundwork for social psychology: Meta-analyses of unpublished studies in Japan and direct replications

    2019.04
    -
    2024.03

    MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Principal investigator

  • Psychological basis of reputation damages: The two step hypothesis on risk perception and evaluative learning

    2016.04
    -
    2019.03

    MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Principal investigator

  • コーディネーション問題は道徳を生むか：進化シミュレーションによる検証

    2016.04
    -
    2019.03

    MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Challenging Exploratory Research, Principal investigator

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Courses Taught 【 Display / hide 】

  • SEMINAR: HUMAN SCIENCES 8

    2024

  • SEMINAR: HUMAN SCIENCES 7

    2024

  • RESEARCH METHODS FOR HUMAN SCIENCES 4A

    2024

  • RESEARCH METHODS FOR HUMAN SCIENCES 3A

    2024

  • RESEARCH METHODS AND METHODOLOGY 2

    2024

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