The α-MEU model: A comment

In Ghirardato et al. (2004) [7], Ghirardato, Macheroni and Marinacci propose a method for distinguishing between perceived ambiguity and the decision-makerʼs reaction to it. They study a general class of preferences which they refer to as invariant biseparable. This class includes CEU and MEU. They...

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Hauptverfasser: Eichberger, Jürgen (VerfasserIn) , Grant, Simon (VerfasserIn) , Kelsey, David (VerfasserIn) , Koševoj, Gleb A. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 29 March 2011
In: Journal of economic theory
Year: 2011, Jahrgang: 146, Heft: 4, Pages: 1684-1698
DOI:10.1016/j.jet.2011.03.019
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.jet.2011.03.019
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0022053111000512
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Verfasserangaben:Jürgen Eichberger, Simon Grant, David Kelsey, Gleb A. Koshevoy
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Zusammenfassung:In Ghirardato et al. (2004) [7], Ghirardato, Macheroni and Marinacci propose a method for distinguishing between perceived ambiguity and the decision-makerʼs reaction to it. They study a general class of preferences which they refer to as invariant biseparable. This class includes CEU and MEU. They axiomatize a subclass of α-MEU preferences. If attention is restricted to finite state spaces, we show that any α-MEU preference relation, satisfies GMMʼs axioms if and only if α=0 or 1, that is, the preferences must be either maxmin or maxmax. We show by example that these axioms may be satisfied when the state space is [0,1].
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Kommentar zu Ghirardato, Paolo: Differentiating ambiguity and ambiguity attitude
Beschreibung:Online Resource
DOI:10.1016/j.jet.2011.03.019