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Écarts entre prix d'achat et prix de vente d'une variable aléatoire: une clarification

Author

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  • Jean-Michel Courtault

    (CEPN - Centre d'Economie de l'Université Paris Nord (ancienne affiliation) - UP13 - Université Paris 13 - CNRS - Centre National de la Recherche Scientifique)

  • Jean-Pascal Gayant

    (GAINS - Groupe d'Analyse des Itinéraires et des Niveaux Salariaux - UM - Le Mans Université)

Abstract

In this paper, we study in the framework of the RDEU model, on one hand the bid-ask spread, and on the other hand the disparity between the buying price and the selling price of a random variable. We show that there is no fundamental difference between the results obtained in the framework of the RDEU model and the results obtained in the framework of the EU model subject to a substitution of the interpretation in term of risk aversion coefficient by an interpretation in term of sensitivity of marginal utility.

Suggested Citation

  • Jean-Michel Courtault & Jean-Pascal Gayant, 2002. "Écarts entre prix d'achat et prix de vente d'une variable aléatoire: une clarification," Post-Print halshs-00447148, HAL.
    • Handle: RePEc:hal:journl:halshs-00447148
    Note: View the original document on HAL open archive server: https://shs.hal.science/halshs-00447148
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    References listed on IDEAS

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    1. Jean-Marc Tallon, 2014. "Décision dans le risque et l'incertain," PSE-Ecole d'économie de Paris (Postprint) halshs-01026078, HAL.
    2. Yaari, Menahem E, 1987. "The Dual Theory of Choice under Risk," Econometrica, Econometric Society, vol. 55(1), pages 95-115, January.
    3. Jean-Pascal Gayant, 1998. "L'apport des modèles non-additifs en théorie de la décision dans le risque et l'incertain," Revue Française d'Économie, Programme National Persée, vol. 13(1), pages 199-227.
    4. Quiggin, John, 1982. "A theory of anticipated utility," Journal of Economic Behavior & Organization, Elsevier, vol. 3(4), pages 323-343, December.
    5. Segal, Uzi & Spivak, Avia, 1990. "First order versus second order risk aversion," Journal of Economic Theory, Elsevier, vol. 51(1), pages 111-125, June.
    6. Courtault, Jean-Michel & Gayant, Jean-Pascal, 1998. "Local risk aversion in the rank dependent expected utility model: First order versus second order effects," Economics Letters, Elsevier, vol. 59(2), pages 207-212, May.
    Full references (including those not matched with items on IDEAS)

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