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Are beliefs a matter of taste? A case for Objective Imprecise Information

Author

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  • Raphaël Giraud

    (CRESE - Centre de REcherches sur les Stratégies Economiques - UFC - UBFC - Université Bourgogne Franche-Comté - UFC - Université de Franche-Comté)

  • Jean-Marc Tallon

    () (CES - Centre d'économie de la Sorbonne - CNRS - Centre National de la Recherche Scientifique - UP1 - Université Panthéon-Sorbonne, PSE - Paris School of Economics)

Abstract

We argue, in the spirit of some of Jean-Yves Jaffray's work, that explicitly incorporating the information, however imprecise, available to the decision maker is relevant, feasible, and fruitful. In particular, we show that it can lead us to know whether the decision maker has wrong beliefs and whether it matters or not, that it makes it possible to better model and analyze how the decision maker takes into account new information, even when this information is not an event and finally that it is crucial when attempting to identify and measure the decision maker's attitude toward imprecise information.

Suggested Citation

  • Raphaël Giraud & Jean-Marc Tallon, 2011. "Are beliefs a matter of taste? A case for Objective Imprecise Information," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-00502781, HAL.
  • Handle: RePEc:hal:cesptp:halshs-00502781
    DOI: 10.1007/s11238-010-9197-4
    Note: View the original document on HAL open archive server: https://halshs.archives-ouvertes.fr/halshs-00502781
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    References listed on IDEAS

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    1. I. Gilboa & A. W. Postlewaite & D. Schmeidler., 2009. "Probability and Uncertainty in Economic Modeling," VOPROSY ECONOMIKI, N.P. Redaktsiya zhurnala "Voprosy Economiki", vol. 10.
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    Citations

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    Cited by:

    1. Stoye, Jörg, 2011. "Axioms for minimax regret choice correspondences," Journal of Economic Theory, Elsevier, vol. 146(6), pages 2226-2251.
    2. Frank Riedel & Linda Sass, 2014. "Ellsberg games," Theory and Decision, Springer, vol. 76(4), pages 469-509, April.
    3. Giraud, Raphaël, 2014. "Second order beliefs models of choice under imprecise risk: non-additive second order beliefs vs. nonlinear second order utility," Theoretical Economics, Econometric Society, vol. 9(3), September.
    4. Luca Rigotti & Matthew Ryan & Rhema Vaithianathan, 2016. "Throwing good money after bad," Decisions in Economics and Finance, Springer;Associazione per la Matematica, vol. 39(2), pages 175-202, November.
    5. Loïc Berger, 2011. "Smooth Ambiguity Aversion in the Small and in the Large," Working Papers ECARES ECARES 2011-020, ULB -- Universite Libre de Bruxelles.
    6. Michèle Cohen & Alain Chateauneuf & Eric Danan & Thibault Gajdos & Raphaël Giraud & Meglena Jeleva & Fabrice Philippe & Jean-Marc Tallon & Jean-Christophe Vergnaud, 2011. "Tribute to Jean-Yves Jaffray July 22, 1939 - February 26, 2009," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-00664715, HAL.
    7. Michèle Cohen & Alain Chateauneuf & Eric Danan & Thibault Gajdos & Raphaël Giraud & Meglena Jeleva & Fabrice Philippe & Jean-Marc Tallon & Jean-Christophe Vergnaud, 2011. "Tribute to Jean-Yves Jaffray," Theory and Decision, Springer, vol. 71(1), pages 1-10, July.
    8. repec:hal:journl:halshs-00664715 is not listed on IDEAS
    9. Yehuda Izhakian & Zur Izhakian, 2015. "Decision making in phantom spaces," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 58(1), pages 59-98, January.

    More about this item

    Keywords

    Decision under uncertainy; Objective Information; Belief Formation; Methodology of Decision Theory;

    JEL classification:

    • B41 - Schools of Economic Thought and Methodology - - Economic Methodology - - - Economic Methodology
    • D80 - Microeconomics - - Information, Knowledge, and Uncertainty - - - General

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