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Incomplete Preferences Under Uncertainty: Indecisiveness in Beliefs versus Tastes

By Efe A. Ok, Pietro Ortoleva and Gil Riella

Abstract

We investigate the classical Anscombe–Aumann model of decision-making under uncertainty without the completeness axiom. We distinguish between the dual traits of “indecisiveness in beliefs” and “indecisiveness in tastes.” The former is captured by the Knightian uncertainty model, the latter by the single-prior expected multi-utility model. We characterize axiomatically the latter model. Then we show that, under independence and continuity, these two models can be jointly characterized by means of a partial completeness property

Publisher: Wiley
Year: 2012
OAI identifier: oai:authors.library.caltech.edu:34080
Provided by: Caltech Authors

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