Aggregating Tastes, Beliefs, and Attitudes under Uncertainty

Eric Danan, Thibault Gajdos, Brian Hill () and Jean-Marc Tallon
Additional contact information
Thibault Gajdos: GREQAM - Groupement de Recherche en Économie Quantitative d'Aix-Marseille - EHESS - École des hautes études en sciences sociales - AMU - Aix Marseille Université - ECM - École Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique
Brian Hill: GREGH - Groupement de Recherche et d'Etudes en Gestion à HEC - HEC Paris - Ecole des Hautes Etudes Commerciales - CNRS - Centre National de la Recherche Scientifique

Post-Print from HAL

Abstract: We provide possibility results on the aggregation of beliefs and tastes for Monotone, Bernoullian and Archimedian preferences of Cerreia-Vioglio, Ghirardato, Maccheroni, Marinacci and Siniscalchi (2011). We propose a new axiom, Unambiguous Pareto Dominance, which requires that if the unambiguous part of individuals' preferences over a pair of acts agree, then society should follow them. We characterize the resulting social preferences and show that it is enough that individuals share a prior to allow non dictatorial aggregation. A further weakening of this axiom on common-taste acts, where cardinal preferences are identical, is also characterized. It gives rise to a set of relevant priors at the social level that can be any subset of the convex hull of the individuals' sets of relevant priors. We then apply these general results to the Maxmin Expected Utility model, the Choquet Expected Utility model and the Smooth Ambiguity model. We end with a characterization of the aggregation of ambiguity attitudes.

Keywords: Preference Aggregation; Social Choice; Uncertainty (search for similar items in EconPapers)
Date: 2014-07
Note: View the original document on HAL open archive server: https://shs.hal.science/halshs-01099032v1
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Published in 2014

Downloads: (external link)
https://shs.hal.science/halshs-01099032v1/document (application/pdf)

Related works:
Journal Article: Robust Social Decisions (2016)
Working Paper: Robust Social Decisions (2016)
Working Paper: Robust Social Decisions (2016)
Working Paper: Robust Social Decisions (2015)
Working Paper: Robust Social Decisions (2015)
Working Paper: Aggregating Tastes, Beliefs, and Attitudes Under Uncertainty (2014)
Working Paper: Aggregating Tastes, Beliefs, and Attitudes under Uncertainty (2014)
Working Paper: Aggregating Tastes, Beliefs, and Attitudes under Uncertainty (2014)
Working Paper: Aggregating Tastes, Beliefs, and Attitudes under Uncertainty (2014)
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:halshs-01099032

Access Statistics for this paper

More papers in Post-Print from HAL
Bibliographic data for series maintained by CCSD ().