Relative concave utility for risk and ambiguity

Baillon, A., Driesen, B. and Wakker, P.P. (2012) Relative concave utility for risk and ambiguity. Games and Economic Behavior, 75(2), pp. 481-489. (doi: 10.1016/j.geb.2012.01.006)

Full text not currently available from Enlighten.

Abstract

This paper presents a general technique for comparing the concavity of different utility functions when probabilities need not be known. It generalizes: (a) Yaariʼs comparisons of risk aversion by not requiring identical beliefs; (b) Kreps and Porteusʼ information-timing preference by not requiring known probabilities; (c) Klibanoff, Marinacci, and Mukerjiʼs smooth ambiguity aversion by not using subjective probabilities (which are not directly observable) and by not committing to (violations of) dynamic decision principles; (d) comparative smooth ambiguity aversion by not requiring identical second-order subjective probabilities. Our technique completely isolates the empirical meaning of utility. It thus sheds new light on the descriptive appropriateness of utility to model risk and ambiguity attitudes.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Driesen, Dr Bram
Authors: Baillon, A., Driesen, B., and Wakker, P.P.
College/School:College of Social Sciences > Adam Smith Business School > Economics
Journal Name:Games and Economic Behavior
Publisher:Elsevier
ISSN:08998256
Published Online:23 February 2012

University Staff: Request a correction | Enlighten Editors: Update this record