TY - RPRT CY - Toulouse ID - publications15789 UR - http://tse-fr.eu/pub/27789 A1 - Chiappori, Pierre-André A1 - Gandhi, Amit A1 - Salanié, Bernard A1 - Salanié, François Y1 - 2012/10// N2 - As a textbook model of contingent markets, horse races are an attractive environment to study the attitudes towards risk of bettors. We innovate on the literature by explicitly considering heterogeneous bettors and allowing for very general risk preferences, including non-expected utility. We build on a standard single-crossing condition on preferences to derive testable implications; and we show how parimutuel data allow us to uniquely identify the distribution of preferences among the population of bettors. We then estimate the model on data from US races. Within the expected utility class, the most usual specifications (CARA and CRRA) fit the data very badly. Our results show evidence for both heterogeneity and nonlinear probability weighting. PB - TSE Working Paper T3 - TSE Working Paper M1 - working_paper TI - From Aggregate Betting Data to Individual Risk Preferences AV - public EP - 53 ER -