Welcome! I am a PhD candidate majoring in social psychology at the University of Tokyo. I have mainly studied the effect of a sense of fairness on prosocial/proself behavior in social dilemmas. In my free time, I enjoy drawing pictures and watching a documentary on wild animals.
Master's degree in social psychology, 2020
The University of Tokyo
Bachelor’s degree in commerce, 2018
Hitotsubashi University
Tham, Y. J., Hashimoto, T., & Karasawa, K. (2022). Social rewards in the volunteer’s dilemma in everyday life. Asian Journal of Social Psychology, 25,117-125. https://doi.org/10.1111/ajsp.12472
Ohashi, M. M., Tham, Y. J., Togo, T., & Iume, Y. (2022). Mothers’ motivation for volunteering in their children’s community-based sports clubs: The effects of justice sensitivity and harassment. Japanese Psychological Research, 93(1), 10-20. https://doi.org/10.4992/jjpsy.93.20038
Shimizu, Y., Tham, Y. J., Hashimoto, T., & Karasawa, K. (2022). Development of a Japanese version of the Symbolic Ableism Scale (SAS-J). Japanese Psychological Research, 92(6), 532-542. https://doi.org/10.4992/jjpsy.92.20208
Tham, Y. J., Hashimoto, T., & Karasawa, K. (2022). Who incurs a cost for their group and when? The effects of dispositional and situational factors regarding equality in the volunteer’s dilemma. Personality and Individual Differences, 185, 111236. https://doi.org/10.1016/j.paid.2021.111236
Tham, Y. J., Hashimoto, T., & Karasawa, K. (2021). Underlying dimensions of benefit and risk perception and their effects on people’s acceptance of conditionally/fully automated vehicles. Transportation. https://doi.org/10.1007/s11116-021-10225-0
Tham, Y. J., Hashimoto, T., & Karasawa, K. (2021). The effect of impression formation on rejection in the ultimatum game. Letters on Evolutionary Behavioral Science, 12(1), 12–17. https://doi.org/10.5178/lebs.2021.83
Tham, Y. J., Hashimoto, T., Schmitt, M., & Karasawa, K. (2019). Development of a Japanese version of the Justice Sensitivity Inventory (JSI-J). Japanese Psychological Research, 90(5), 503–512. https://doi.org/10.4992/jjpsy.90.18234
Tham, Y. J., Hashimoto, T., & Karasawa, K. (2019). The positive and negative effects of justice sensitivity and justice-related emotions in the volunteer’s dilemma. Personality and Individual Differences, 151, 109501. https://doi.org/10.1016/j.paid.2019.07.011
Tham, Y. J., Murata, K., & Karasawa, K. (2018). Because of the “bad blood”?: Genetic essentialism and associative stigma of an ex-convict’s children. Journal of Human Environmental Studies, 16(2), 77–82. https://doi.org/10.4189/shes.16.77
Tham, Y. J., Kobayashi, E., and Okamoto, S. (September, 2022).The effect of the amount and balance of social support on subjective well-being of older Japanese adults. Poster presented at the 85th Annual Convention of the Japanese Psychological Association. Tokyo.
Tham, Y. J., Hashimoto, T., and Karasawa, K. (February, 2022). Why do people prefer net-benefit equality but cannot achieve it in the asymmetric volunteer’s dilemma? Poster presented at the 23rd Annual Meeting of the Society for Personality and Social Psychology. Online.
Tham, Y. J., Hashimoto, T., and Karasawa, K. (September, 2021). How much should and does the “strongest” member incur a cost for the group in an asymmetric volunteer’s dilemma? Talk presented at the 67th Annual Convention of the Japanese Group Dynamics Association. Online. *Winner of the Excellent Presentation Award
Tham, Y. J., Hashimoto, T., and Karasawa, K. (September, 2021). The effect of the certainty of the proposer’s negative impression on the responder’s motivation to reject unfair offers: An examination using repeated ultimatum games. Poster presented at the 85th Annual Convention of the Japanese Psychological Association. Online.
Tham, Y. J., Hashimoto, T., and Karasawa, K. (August, 2021). Ideal and reality of distribution of labor in a group: An examination using asymmetric volunteer’s dilemma games. Presented at the 62nd Annual Meeting of the Japanese Society of Social Psychology. Online.
Tham, Y. J., Hashimoto, T., and Karasawa, K. (July, 2021). People prefer equality in asymmetric volunteer’s dilemmas. Poster presented at the 14th Biennial Conference of the Asian Association of Social Psychology. Online.
Tham, Y. J. (March, 2021). How much should and does each member incur a cost for their group in the volunteer’s dilemma? Poster presented at the 11th Annual Meeting of the Society for Tokyo Young Psychologists. Online.
Tham, Y. J., Hashimoto, T., and Karasawa, K. (February, 2021). Who incurs a cost for theier group and when? The effect of justice sensitivity and previous interactions with other members on people’s behavior in a volunteer’s dilemma. Poster presented at the 22nd Annual Meeting of the Society for Personality and Social Psychology. Online.
Tham, Y. J., Hashimoto, T., and Karasawa, K. (December, 2020). Are women more willing to cooperate than men when it does not require skill? An application of the costly signaling theory. Presented at the 13th Annual Meeting of the Human Behavior and Evolution Society of Japan. Online.
Tham, Y. J., Hashimoto, T., and Karasawa, K. (November, 2020). Social perception in a volunteer’s dilemma in everyday life. Presented at the 61st Annual Meeting of the Japanese Society of Social Psychology. Online.
Shimizu, Y., Tham, Y. J., Hashimoto, T., and Karasawa, K. (November, 2020). Developing a scale to measure symbolic ableism in Japan. Presented at the 61st Annual Meeting of the Japanese Society of Social Psychology. Online.
Tham, Y. J., Hashimoto, T., and Karasawa, K. (September, 2020). Determinants of acceptance of automated vehicles. Poster presented at the 84th Annual Convention of the Japanese Psychological Association. Online.
Hashimoto, T., Tham, Y. J., Karasawa, K., and Tai, M. (September, 2020). Understanding people’s attitudes toward a “data-driven” society based on trust and technology acceptance models. Poster presented at the 84th Annual Convention of the Japanese Psychological Association. Online.
Ohashi, M. M., Tham, Y. J., Togo, E., and Iume, Y. (September, 2020). Factors for mothers to continue team support in elementary school children’s community sports: Effects of sports harassment and the justice sensitivity. Poster presented at the 84th Annual Convention of the Japanese Psychological Association. Online. *Winner of the Excellent Presentation Award
Tham, Y. J., Hashimoto, T., and Karasawa, K. (February, 2020). How people evaluate volunteers and shirkers in the volunteer’s dilemma? The effect of perceived cost of volunteering. Poster presented at the 21st Annual Meeting of the Society for Personality and Social Psychology. New Orleans, LA, USA.
Tham, Y. J. (November 2019). Rejecting an unfair offer allows you to gain self/other-focused material/social rewards: An integrative framework of motivation for rejecting unfair offers in ultimatum games. Poster presented at the 23rd Experimental Social Science Conference. Tokyo, Japan.
Tham, Y. J., Hashimoto, T., and Karasawa, K. (November, 2019). Individual differences of willingness to volunteer in a volunteer’s dilemma: The positive and negative effects of justice sensitivity. Talk presented at the 60th Annual Meeting of the Japanese Society of Social Psychology. Tokyo, Japan.
Tham, Y. J., Murata, K., and Karasawa, K. (September, 2019). Implicit and explicit attitudes toward blood ties. Talk presented at the 36th Annual Meeting of Japanese Cognitive Science Society. Shizuoka, Japan.
Tham, Y. J., Hashimoto, T., and Karasawa, K. (July, 2019). “Take one for the team!” The positive and negative effects of justice sensitivity in a volunteer’s dilemma in workplace scenarios. Poster presented at the 13th Biennial Conference of the Asian Association of Social Psychology. Taipei, Taiwan.
Tham, Y. J., Hashimoto, T., Shiraiwa, Y., and Karasawa, K. (March, 2019). Who “volunteers”? The effect of justice sensitivity in a volunteer’s dilemma at a university dorm. Talk presented at the 9th Asian Conference on Psychology and the Behavioral Sciences. Tokyo, Japan.
Tham, Y. J., Hashimoto, T., Schmitt, M., and Karasawa, K. (March, 2019). Development of a Japanese version of the Justice Sensitivity Inventory (JSI-J). Poster presented at the 9th Asian Conference on Psychology and the Behavioral Sciences. Tokyo, Japan.
Tham, Y. J., Hashimoto, T., and Karasawa, K. (February, 2019). Egoistic motives of concerning injustice for others: Justice sensitivity and self-consciousness. Poster presented at the 20th Annual Meeting of the Society for Personality and Social Psychology. Portland, OR, USA.
Tham, Y. J., Murata, K., & Karasawa, K. Because of the “bad blood”? Genetic essentialism and associative stigma of an ex-convict’s children. (August, 2018). Poster presented at the 59th Annual Meeting of the Japanese Society of Social Psychology. Osaka, Japan.
Grant-in-Aid for JSPS Fellows, Awarded by Japan Society for the Promotion of Science (April 2022 - March 2024)
Graduate Travel Award 2022, Awarded by Society for Personality and Social Psychology (February 2022)
Ikushi Prize 2021, Awarded by Japan Society for the Promotion of Science (January 2022)
Excellent Presentation Award at the 67th Annual Convention, Awarded by Japanese Group Dynamics Association (September 2021)
International Registration Award 2021, Awarded by Society for Personality and Social Psychology (February 2021)
Grant-in-Aid for JSPS Fellows, Awarded by Japan Society for the Promotion of Science (April 2020 - March 2023)
Two-year Scholarship for Outstanding Achievement, Awarded by Japan Student Services Organization (April 2020)
Research Grant for Research on Simulation and Gaming Using Advanced and Creative Methods 2019, Awarded by Foundation for the Fusion of Science and Technology (December 2019)
Summer School Research Grant 2019, Awarded by Asian Association of Social Psychology (December 2019)
Travel Grant for the 83rd Annual Meeting of the Japanese Psychological Association, Awarded by Japanese Psychological Association Early Career Psychologists Network (September 2019)
Travel Grant for Summer School 2019, Awarded by Asian Association of Social Psychology (July 2019)
Travel Grant for International Conferences 2019, Awarded by Japanese Society of Social Psychology (July 2019)
Travel Grant for International Conferences 2019, Awarded by Japanese Psychological Association (July 2019)
IAFOR Scholarship 2019, Awarded by International Academic Forum (March 2019)
Young Researcher’s Scholarship Award 2018, Awarded by Japanese Society of Social Psychology (December 2018)
Travel Grant for International Conferences 2018, Awarded by Japanese Group Dynamics Association (October 2018)
Scholarship for Studying Abroad 2016, Awarded by Tobitate Young Ambassador Program of the Ministry of Education, Culture, Sports, Science and Technology (September 2016 - June 2017)
Scholarship for Studying Abroad 2016, Awarded by Josuikai (September 2016 - May 2017)
