Publications (Journal Articles)
Sugiura, H., Mifune, N., Tsuboi, S., & Yokota, K. (2016). Gender differences in intergroup conflict: The effect of outgroup threat priming on social dominance orientation. Personality and Individual Differences, 104, 262–265. doi: 10.1016/j.paid.2016.08.013
Nakanishi, D. & Yokota, K. (2016). Ingroup cooperation and majority/minority-syncing strategy in intergroup conflict: A thought experiment using evolutionary simulation. Japanese Journal of Social Psychology, 31, 193-199. doi: 10.14966/jssp.31.3_193
Yokota, K. (2012). The validity of a three-factor model in PPI-R and social dominance orientation in Japanese sample. Personality and Individual Differences, 53, 907-911.
Navarrete, C. D., McDonald, M. M., Asher, B. D., Kerr, N. L., Yokota, K., Olsson, A., & Sidanius, J. (2012). Fear is Readily Associated with an Out-group Face in a Minimal Group Context. Evolution and Human Behavior, 33, 590-593.
Yokota, K. & Nakanishi, D. (2012) The thought experiment on ingroup cooperation and conformity under intergroup conflict through an evolutionary simulation. Japanese Journal of Social Psychology, 27, 75-82.
Yokota, K., & Yuki, M. (2011). Sex differences in adaptive psychological mechanisms against outgroup threat: “Interference threat” elicits males’ discrimination, while “contamination threat” elicits female’s discrimination. The Annals of the Hokkaido Psychological Society, 33, 1-10.
Takahashi, T., Shinada, M., Inukai, K., Tanida, S., Takahashi, C., Mifune, N., Takagishi, H., Horita, Y., Hashimoto, H., Yokota, K., Kameda, T., & Yamagishi, T. (2010). Stress hormones predict hyperbolic time-discount rates six months later in adults. Neuroendocrinology Letters, 31, 616-621.
Shinada, M., Yamagishi, T., Tanida, S., Takahashi, C., Inukai, K., Koizumi, M., Yokota, K., Mifune, N., Takagishi, H., Horita, Y., & Hashimoto, H. (2010) Accuracy of judgment about others cooperative behavior: Effects of attractiveness and facial expressiveness. The Japanese journal of psychology, 81, 149-157.
Yokota, K., & Yuki, M. (2009). Intergroup threat and intragroup interdependence: Multiplicity of psychological processes behind ingroup favoritism, and their distinct elicitors. Japanese Journal of Psychology, 80, 246-251.
Yuki, M., & Yokota, K. (2009). The Primal Warrior: Outgroup Threat Priming Enhances Intergroup Discrimination in Men but not Women. Journal of Experimental Social Psychology, 45, 271-274.
Yokota, K., & Yuki, M. (2006). The effect of outgroup threat on ingroup cooperation in social dilemma game. Behavioral Science, 45, 49-50.
Abstract in Japanese <download>
Reports
Yokota, K. (2013) Blood-type and compatibility (1) The effect of blood-type stereotype on compatibility of the middle-aged married couples - Shudai_Ronshu, 54, 13-22.
Yokota, K. (2013) Blood-type and compatibility (2) The blood-type stereotype as the tool for mating choice - Shudai_Ronshu, 54, 23-34.
Suzuki, A. & Yokota, K. (2013). Undergraduate students’ cognition of infant crying. Shudai_Ronshu, 54, 109-120.
Yokota, K. & Nakanishi, D. (2011) Development of the conformity orientation scale ―Informative influence and normative influence― Shudai_Ronshu, 51, 23-36.
Yokota, K., & Nakanishi, D. (2009) Accuracy of judgment about others cooperative behavior: Effects of attractiveness and facial expressiveness. CENTER FOR EXPERIMENTAL RESEARCH IN SOCIAL SCIENCES Working Paper Series No. 103. Hokkaido University.
Yuki, M., Schug, J., Horikawa, H., Takemura, K., Sato, K., Yokota, K., & Kamaya, K. (2007) Development of A Scale to Measure Perceptions of Relational Mobility in Society. CENTER FOR EXPERIMENTAL RESEARCH IN SOCIAL SCIENCES Working Paper Series No. 75. Hokkaido University.
Abstract in English <download>
Yokota, K., Yuki, M., & Ohnuma, S., (2003). The influence of intergroup competition belief on the cooperation toward a lower-status group in the Simulated International Society game. CENTER OF EXCELENCE Working Paper Series No. 38. Hokkaido University.
Publications (Books Chapters)
Yokota, K. (2007). Ingroup favoritism and intergroup conflict. In K. Yamada, H. Kitamura, M. Yuki (Eds.), Social psychology made simple (pp. 112-115). Kyoto: Minerva Shobo. (Japanese)
Presentations (English)
Yokota, K. (2013, July). Blood type screening - The blood type stereotype as a tool for mate selection. The 25th annual Human Behavior and Evolution Society, Miami, FL.
S. Imada, N. Sakai, A. Takagaki, H. Koyama, K. Yokota, & D. Nakanishi (2012, September). Effects of package of the commercial food on evaluation of the palatability: Good packages are not always “good” for the products. 5th European Conference on Sensory and Consumer Research, Bern, Switzerland.
Yokota, K., Mifune, N., & Nakanishi, D. (2012, June). Less moral males: Sex differences in negative emotions felt toward free-ridesr under intergroup conflict situations. The 24th annual Human Behavior and Evolution Society, Albuquerque, NM.
Yokota, K. & Li, Y. (2012, January). The effect of belief of others’ intergroup negative emotion on prejudice. Poster presented at the 13th annual meeting of the Society for Personality and Social Psychology, San Diego, LA.
Yokota, K. & Nakanishi, D. (2011, June-July). Normative conformity as coalition formation to cope with threat of disease infection. Paper presented at the 23rd annual meeting of Human Behavior and Evolution Society, Montpellier, France.
Nakanishi, D. & Yokota, K. (2011, June-July). The effect of intergroup conflict on ingroup cooperation and conformity – simulation and experimental data.Paper presented at the 23rd annual meeting of Human Behavior and Evolution Society, Montpellier, France.
Yokota, K., & Yuki, M. (2008, February). Different kinds of perceived entitativity lead to different kinds of perceived threats and emotions toward outgroups: An examination of real-world social groups. Paper presented at the 9th annual meeting of the Society of Personality and Social Psychology, Albuquerque, NM.
Yokota, K., & Yuki, M. (2007, February). Different facets of perceived entitativity lead to different types of intergroup threats and emotions. Paper presented at the 8th Annual meeting of Society of Personality and Social Psychology, Memphis, TN.
Yokota, K., & Yuki, M. (2005, June). The effect of intergroup threat priming on ingroup cooperation in different contexts: A view from coalitional psychology. Paper presented at the 17th Annual Meeting of Human Behavior and Evolution Society, Austin, TX.
Yokota, K., & Yuki, M. (2004, August). The effect of intergroup threat priming on ingroup cooperation in social dilemma. Poster presented at the 28th International Congress of Psychology, Beijing, China.
Yokota, K., & Yuki, M. (2003, July-August). The effect of intergroup competition priming on the pattern of ingroup favoritism in the Minimal Group Paradigm. Poster presented at the 5th biennial conference of the Asian Association of Social Psychology, Manila, Philippines.
Presentations (Japanese)
Yokota, K., Tsuboi, S., Mifune, N., & Sugiura, H. (2014, July 26th-27th) The sex differences of outgroup derogation triggered by the perceived cue of outgroup threat. Oral presentation at the 55th Annual Meeting of the Japanese Society of Social Psychology, Hokkaido, Japan.
Masui, K. & Yokota, K. (2014, July 26th-27th) The effect of psychopathy on the sex difference of social dominance orientation. Oral presentation at the 55th Annual Meeting of the Japanese Society of Social Psychology, Hokkaido, Japan.
Nakagawa, Y., Yokota, K., & Nakanishi, D. (2014, July 26th-27th). Interdependence and ingroup favoritism – The vignette experiment for the fans of baseball- Oral presentation at the 55th Annual Meeting of the Japanese Society of Social Psychology, Hokkaido, Japan.
Nakanishi, D., Yokota, K., Nakagawa, Y., & Izumi, A. (2014, July 26th-27th). The development of experimental programs of social dilemma experiment based on web browser. Oral presentation at the 55th Annual Meeting of the Japanese Society of Social Psychology, Hokkaido, Japan.
Izumi, A., Nakanishi, D., & Yokota, K. (2014, July 26th-27th). Why is financial damage caused by harmful rumors or misinformation regard as socially preferable?- The vignette study- Oral presentation at the 54th Annual Meeting of the Japanese Society of Social Psychology, Okinawa, Japan.
Ikeda, K., Hiraishi, K., Yokota, K., & Nakanishi, D. (2014, July 26th-27th). The risk of health harm by the Fukushima nuclear accident (2). Poster presentation at the 55th Annual Meeting of the Japanese Society of Social Psychology, Hokkaido, Japan.
Yokota, K. (2013, December 7th-8th). Group love for avoidance of intergroup conflict Oral presentation at the 6th Annual meeting of Japanese Human Behavior and Evolution Society, Hirosimah, Japan.
Tsuboi, S., Mifune, N., Sugiura, H., & Yokota, K. (2013, December 7th-8th). Can the outgroup derogation be trigger from outgroup threat priming? – Experimental investigation using the minimal group paradigm. Oral presentation at the 6th Annual meeting of Japanese Human Behavior and Evolution Society, Hirosimah, Japan.
Nakanishi, D., Yokota, K., Nakagawa, Y., & Izumi, A. (2013, December 7th-8th). The development of the web-based computer program for social dilemma game. Oral presentation at the 6th Annual meeting of Japanese Human Behavior and Evolution Society, Hirosimah, Japan.
Izumi, A., Nakanishi, D., & Yokota, K. (2013, November 16th-17th). Why is financial damage caused by harmful rumors or misinformation regard as socially preferable?- The vignette study- Poster presentation at the 69th Annual meeting of Chugoku-Shikoku Psychological Association, Yamaguchi, Japan.
Nakagawa, Y., Yokota, K., & Nakanishi, D. (2013, November 16th-17th). Interdependence and ingroup favoritism – The vignette experiment for the fans of Hiroshima Toyo Carp- Poster presentation at the 69th Annual meeting of Chugoku-Shikoku Psychological Association, Yamaguchi, Japan.
Hiraishi, K., Ikeda, K., Yokota, K., & Nakanishi, D. (2013, November 2nd-3rd). The risk of health harm by the Fukushima nuclear accident. Poster presentation at the 54th Annual Meeting of the Japanese Society of Social Psychology, Okinawa, Japan.
Izumi, A., Nakanishi, D., & Yokota, K. (2013, November 2nd-3rd). Why is financial damage caused by harmful rumors or misinformation regard as socially preferable?- The vignette study- Oral presentation at the 54th Annual Meeting of the Japanese Society of Social Psychology, Okinawa, Japan.
Nakagawa, Y., Yokota, K., & Nakanishi, D. (2013, November 2nd-3rd). Interdependence and ingroup favoritism – The vignette experiment for the fans of Hiroshima Toyo Carp- Oral presentation at the 54th Annual Meeting of the Japanese Society of Social Psychology, Okinawa, Japan.
Mifune, N., Yokota, K., & Nakaki, M. (2013, September) A correlational study of Social Dominance Orientation and political attitudes in Japan. Poster presentation at the 77th Annual Convention of the Japanese Psychological Association, Sapporo, Japan.
Nakanishi, D. & Yokota, K. (2012, December) The effect of group selection on the evolution of anti-conformity in evolutionary simulation. Oral presentation at the 5th Annual meeting of Japanese Human Behavior and Evolution Society, Tokyo, Japan.
Tsuboi, S., Mifune, N., & Yokota, K. (2012, December) Can outgroup threat trigger aggression toward outgroups? – The effect of outgroup threat priming on ingroup and outgroup cooperation in the minimal group paradigm - Poster presentation at the 5th Annual meeting of Japanese Human Behavior and Evolution Society, Tokyo, Japan.
Nakagawa, Y., Nakanishi, D., & Yokota, K. (2012, December) Ingroup favoritism among the fans of Hiroshima Toyo Carp in the vignette experiment. Poster presentation at the 5th Annual meeting of Japanese Human Behavior and Evolution Society, Tokyo, Japan.
Izumi, A., Nakanishi, D., & Yokota, K. (2012, December) Why is financial damage caused by harmful rumors or misinformation regard as socially preferable? Poster presentation at the 5th Annual meeting of Japanese Human Behavior and Evolution Society, Tokyo, Japan.
Yokota, K. (2011, October). Sex differences of moral disgust in intergroup threat situation. Poster presentation at the 4th Annual meeting of Japanese Human Behavior and Evolution Society, Hokkaido, Japan.
Yokota, K. (2011, September). Intergroup orientation in psychopath. Oral presentation at the 52nd Annual Meeting of Japanese Society of Social Psychology, Nagoya, Japan.
Li. Y., Zhao, H., & Yokota, K. (2011, August). Pluralistic ignorance in negative emotion between Japan and China. Oral presentation at the 11th Joint Meeting of Hokkaido Psychological Society and Tohoku Psychological Society, Sapporo, Japan.
Yokota, K. (2010, December). The effects of belief on others’ emotion on the negative attitude toward outgroups. Oral presentation at the 3rd Annual Meeting of Japanese Human Behavior and Evolution Society, Kobe, Japan.
Mifune, N., Yokota, K., & Nakanishi, D. (2010, August). Psychological Processes that intergroup conflict leads ingroup cooperation by Social Value Orientation. Poster presentation at the 57th Annual Meeting of Japanese Group Dynamics Association, Saitama, Japan.
Nakanishi, D., & Yokota, K. (2009, October). Evolution of ingroup cooperation and conformity under intergroup conflict: An evolutionary simulation and experimental investigation. Poster presentation at the 50th Annual Meeting of the Japanese Society of Social Psychology, Osaka, Japan.
Yokota, K., & Yuki, M. (2009, October) Sex differences in adaptive psychological mechanisms against outgroup threat: “Interference threat” elicits males’ discrimination, while “contamination threat” elicits female’s discrimination. Poster presentation at the 15th Annual Meeting of Hokkaido Psychological Society, Nayoro, Japan.
Nakanishi, D., & Yokota, K. (2009, August). Ingroup cooperation and conformity under intergroup conflict: An evolutionary simulation and experimental investigation. Poster presentation at the 73th Annual Meeting of the Japanese Psychological Association, Kyoto, Japan.
Yokota, K. (2009, August). Defensive psychological mechanisms against intergroup threat: the diversity and sex difference. Oral presentation at the 73th Annual Meeting of Japanese Psychological Association, Kyoto, Japan.
Yokota, K., & Yuki, M. (2007, December). An experimental study on the qualitative differences in the relationship between group cognition and intergroup threats/emotions. Poster presented at the 54th Annual Meeting of Hokkaido Psychological Society, Asahikawa, Japan.
Yokota, K., & Yuki, M. (2007, September). Group representations and intergroup threats - an investigation of attitudes toward various social groups. Paper presented at the 48th Annual Meeting of Japanese Society of Social Psychology, Tokyo, Japan.
Yokota, K., & Yuki, M. (2006, September). Intergroup threat responses to differing types of perceived group entitativity. Paper presented at the 47th Annual Meeting of the Japanese Society of Social Psychology, Sendai, Japan.
Yokota, K., & Yuki, M. (2005, December). The effect of resource exhaustion priming on ingroup cooperation. Poster presented at the 7th annual meeting of the Human Behavior and Evolution Society of Japan, Kyoto University, Kyoto, Japan.
Yokota, K., & Yuki, M. (2005, September). The effect of resource exhaustion priming on ingroup cooperation. Proceedings of the 46th Annual Meeting of the Japanese Society of Social Psychology, Osaka, Japan.
Yokota, K., & Yuki, M. (2004, July). The effect of intergroup threat priming on ingroup cooperation. Proceedings of the 45th Annual Meeting of the Japanese Society of Social Psychology, Sapporo, Japan.
Yokota, K., Yuki, M. & Ohnuma, S. (2003, September). The influence of intergroup competition belief on the cooperation toward a lower-status group in the Simulated International Society game. Proceedings of the 44th Annual Meeting of the Japanese Society of Social Psychology, Tokyo, Japan.
Yokota, K. & Yuki, M. (2002, December). The effect of intergroup competition belief on ingroup favoritism in the minimal group paradigm. Proceedings of the 43rd Annual Meeting of the Japanese Society of Social Psychology, Tokyo, Japan.
Yokota, K. & Yuki, M. (2002, November-December). Intergroup competition and intragroup cooperation: Experimental investigation with the minimal group paradigm. Presentation at the 4th meeting of Human Behavior & Evolution Society of Japan, Sapporo, Japan.
Yuki, M., & Yokota, K. (2001, October). War, peace, and ingroup identity: The effect of intergroup context on ingroup favoritism. Proceedings of the 42nd Annual Meeting of the Japanese Society of Social Psychology, Nagoya, Japan.