1. Eliciting Multiple Prior Beliefs
- Author
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Mohammed Abdellaoui, Philippe Colo, Brian Hill, HEC Paris - Recherche - Hors Laboratoire, Ecole des Hautes Etudes Commerciales (HEC Paris), Centre National de la Recherche Scientifique (CNRS), Groupement de Recherche et d'Etudes en Gestion à HEC (GREGH), Ecole des Hautes Etudes Commerciales (HEC Paris)-Centre National de la Recherche Scientifique (CNRS), University of Duisburg-Essen, and HEC Paris Research Paper Series
- Subjects
History ,Polymers and Plastics ,Computer science ,media_common.quotation_subject ,Industrial and Manufacturing Engineering ,0502 economics and business ,Prior probability ,050207 economics ,Business and International Management ,media_common ,Event (probability theory) ,050208 finance ,Cumulative distribution function ,05 social sciences ,Probabilistic logic ,[SHS.PHIL]Humanities and Social Sciences/Philosophy ,Multiple Priors ,JEL: D - Microeconomics/D.D8 - Information, Knowledge, and Uncertainty/D.D8.D81 - Criteria for Decision-Making under Risk and Uncertainty ,Ambiguity ,Imprecise probability ,Belief Measurement ,[SHS.ECO]Humanities and Social Sciences/Economics and Finance ,Preference ,α-maxmin EU ,Identification (information) ,[SHS.GESTION]Humanities and Social Sciences/Business administration ,Imprecise Probability ,Cognitive psychology - Abstract
Despite the increasing importance of multiple priors in various domains of economics and the significant theoretical advances concerning them, choice-based incentive-compatible multiple-prior elicitation largely remains an open problem. This paper develops a solution, comprising a preference-based identification of a subject’s probability interval for an event, and two procedures for eliciting it. The method does not rely on specific assumptions about subjects’ ambiguity attitudes or probabilistic sophistication. To demonstrate its feasibility, we implement it in two incentivized experiments to elicit the multiple-prior equivalent of subjects’ cumulative distribution functions over continuous-valued sources of uncertainty. We find a predominance of non-degenerate probability intervals among subjects for all explored sources, with intervals being wider for less familiar sources. Finally, we use our method to undertake the first elicitation of the mixture coefficient in the Hurwicz α-maxmin EU model that fully controls for beliefs.
- Published
- 2021