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Barbara Mellers is currently the George I. Heyman University Professor, University of Pennsylvania with cross appointments in the Marketing Department at the Wharton School and the Psychology Department.

She was trained in psychology and studies how people make judgments and decisions. Her work has addressed questions about what we perceive as fair, how emotions and surprise influence choice, when the context and the response mode shape judgments and decisions, and why people violate principles of rationality. She has written over 100 scientific papers and has received funding from the National Science Foundation for over 20 years.

She is currently a PI on a large-scale study sponsored by the Intelligence Advanced Research Projects Activity that examines ways to improve geopolitical forecasts, what individual difference variables predict good forecasting, what elicitation methods should be used, and what aggregation methods are most accurate.

Nick Chater is Professor of Behavioural Science at Warwick Business School. He joined Warwick Business School in 2010, after holding chairs in psychology at Warwick and UCL. He is particularly interested in the cognitive and social foundations of rationality and language. He has over 200 publications, has won four national awards for psychological research, and has served as Associate Editor for the journals Cognitive Science, Psychological Review, and Psychological Science.

He was elected a Fellow of the Cognitive Science Society in 2010 and a Fellow of the British Academy in 2012. Nick is co-founder of the research consultancy Decision Technology; and is on the advisory board of the Cabinet Office's Behavioural Insight Team (BIT), popularly known as the 'Nudge Unit'.

Botond Koszegi is Professor of Economics at Central European University, Budapest Hungary. He was previously Professor of Economics at the University of California at Berkeley, and has held a visiting position at Massachusetts Institute of Technology.

He earned his BA in mathematics from Harvard University in 1996, and his Ph.D. in economics from the Massachusetts Institute of Technology in 2000. His research interests are primarily in the theoretical foundations of behavioral economics. He has produced research on self-control problems and the consumption of harmful products, self-image and anticipatory utility, as well as reference-dependent preferences and loss aversion. Recently, he has been studying how firms respond to consumers’ psychological tendencies, especially in the pricing of products and the design of credit contracts. He is Managing Editor at the Review of Economic Studies.