Four notions of mean preserving increase in risk, risk attitudes and applications to the Rank-Dependent Expected Utility model

Alain Chateauneuf, Michèle Cohen and Isaac Meilijson ()
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Isaac Meilijson: TAU - School of Mathematical Sciences [Tel Aviv] - TAU - Raymond and Beverly Sackler Faculty of Exact Sciences [Tel Aviv] - TAU - Tel Aviv University

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Abstract: This article presents various notions of risk generated by the intuitively appealing single-crossing operations between distribution functions. These stochastic orders, Bickel & Lehmann dispersion or (its equal-mean version) Quiggin's monotone mean-preserving increase in risk and Jewitt's location-independent risk, have proved to be useful in the study of Pareto allocations, ordering of insurance premia and other applications in the Expected Utility setup. These notions of risk are also relevant tothe Quiggin-Yaari Rank-dependent Expected Utility (RDEU) model of choice among lotteries. Risk aversion is modeled in the vNM Expected Utility model by Rothschild & Stiglitz's Mean Preserving Increase in Risk (MPIR). Realizing that in the broader rank-dependent set-up this order is too weak to classify choice, Quiggin developed the stronger monotone MPIR for this purpose. This paper reviews four notions of mean-preserving increase in risk - MPIR, monotoneMPIR and two versions of location-independent risk (renamed here left and right monotone MPIR) - and shows which choice questions are consistently modeled by each of these four orders.

Keywords: Location-independent risk; monotone increase in risk; rank-dependent expected utility.; rank-dependent expected utility (search for similar items in EconPapers)
Date: 2004
Note: View the original document on HAL open archive server: https://shs.hal.science/halshs-00212281
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Published in Journal of Mathematical Economics, 2004, 40, pp.547-571. ⟨10.1016/S0304-4068(03)00044-2⟩

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Journal Article: Four notions of mean-preserving increase in risk, risk attitudes and applications to the rank-dependent expected utility model (2004)
Working Paper: Four notions of mean preserving increase in risk, risk attitudes and applications to the Rank-Dependent Expected Utility model (2004)
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Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:halshs-00212281

DOI: 10.1016/S0304-4068(03)00044-2

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