Haewon Yoon
Haewon Yoon, Ph.D., is an Assistant Professor in the School of Psychological and Behavioral Sciences at Southern Illinois University. His research explores decision-making processes involving impatience and decision biases, with a focus on time, money, and health. His primary research area is impatience, which he investigates through self-control failure, personal financial decisions, college decisions, online shipping choices, and health behaviors. His secondary research area addresses decision biases, focusing on debiasing interventions using computer games and observational learning, and on biases in expert judgments. These work has appeared in leading journals such as Management Science, Journal of Marketing Research, and Organizational Behavior and Human Decision Processes.
Before joining SIU in 2025, Dr. Yoon was an Assistant Professor at Indiana University, where he received the Trustees Teaching Award in 2023 and a Kelley School of Business Research Award in 2022. He held postdoctoral positions at Boston College and Boston University. He earned his Ph.D. in Psychology from Rutgers University and his M.S. in Cognitive Science and B.A./B.B.A. in Psychology and Business Administration from Yonsei University.
Prospective students: Dr. Yoon is recruiting a Ph.D. student to begin in Fall 2027 through the Doctoral Program in Psychology. Interested applicants are encouraged to contact him by email before applying.
Research Interests
- Judgment and decision making
- Intertemporal choice and delay discounting
- Self-control and health decisions
- Consumer psychology and financial decision making
- Decision biases and debiasing interventions
Educational History
- Ph.D., Psychology, Rutgers University–New Brunswick
- M.S., Cognitive Science, Yonsei University
- B.A. & B.B.A., Psychology & Business Administration, Yonsei University
Publications
Heerma van Voss, B., Yoon, H., Scopelliti, I., Zweet, R., Helsloot, I., & Morewedge, C. K. (2025). Debiasing training reduces confirmation bias in national risk analysts. Scientific Reports, 15(1), 42529.
Roy, E., Jaeger, B., Evans, A. M., … Yoon, H., … Axt, J. R. (2025). A contest study to reduce attractiveness-based discrimination in social judgment. Journal of Personality and Social Psychology, 128(3), 508–535.
Yoon, H., Yang, Y., & Morewedge, C. K. (2022). Early cost realization and college choice. Journal of Marketing Research, 59(1), 136–152.
Yoon, H., Scopelliti, I., & Morewedge, C. K. (2021). Decision making can be improved through observational learning. Organizational Behavior and Human Decision Processes, 162, 155–188.
Yoon, H. (2020). Impatience and time inconsistency in discounting models. Management Science, 66(12), 5850–5860.
Yoon, H., & Chapman, G. B. (2016). A closer look at the yardstick: A new discount rate measure with precision and range. Journal of Behavioral Decision Making, 29(5), 470–480.
Morewedge, C. K., Yoon, H., Scopelliti, I., Symborski, C. W., Korris, J. H., & Kassam, K. S. (2015). Debiasing decisions: Improved decision making with a single training intervention. Policy Insights from the Behavioral and Brain Sciences, 2(1), 129–140.
Bold, K. W., Yoon, H., Chapman, G. B., & McCarthy, D. E. (2013). Factors predicting smoking in a laboratory-based smoking-choice task. Experimental and Clinical Psychopharmacology, 21(2), 133–143.
Chapman, G. B., Li, M., Vietri, J. T., Ibuka, Y., Thomas, D., Yoon, H., & Galvani, A. (2012). Using game theory to examine incentives in influenza vaccination behavior. Psychological Science, 23(9), 1008–1015.
Chapman, G. B., Li, M., Colby, H., & Yoon, H. (2010). Opting in versus opting out of influenza vaccination. Journal of the American Medical Association, 304(1), 43–44.
Lim, S. J., Yoon, H., Yoon, Y. S., & Sohn, Y. W. (2009). Effective advertisement message based on the expected purchase time and product category: Focusing on construal level theory. Korean Journal of Consumer and Advertising Psychology, 10(2), 321–336.