Vector Expected Utility and Attitudes toward Variation

Marciano Siniscalchi

No 1455, Discussion Papers from Northwestern University, Center for Mathematical Studies in Economics and Management Science

Abstract: This paper analyzes a model of decision under ambiguity, deemed vector expected utility or VEU. According to the proposed model, an act f, mapping states of nature to prizes, is evaluated via the sum of (1) a baseline expected-utility term, and (2) an ambiguity-adjustment term. The adjustment term may be interpreted as reflecting the variability of the act f around its baseline expected utility; in particular, like classical statistical measures of variability, it is invariant to location and sign changes. A behavioral characterization of the VEU model is provided. Furthermore, an updating rule for VEU preferences is proposed and characterized. The suggested updating rule facilitates the analysis of sophisticated dynamic choice with VEU preferences.

Keywords: ambiguity; reference prior; vector measures (search for similar items in EconPapers)
JEL-codes: D81 D83 (search for similar items in EconPapers)
Date: 2007-12
New Economics Papers: this item is included in nep-upt
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Citations: View citations in EconPapers (1)

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Journal Article: Vector Expected Utility and Attitudes Toward Variation (2009)
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