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Incertitude scientifique et décision publique : le recours au Principe de précaution

  • Tania BOUGLET

    (GEM, Insitut d’Etudes Politiques de Paris)

  • Thomas LANZI

    (ESC Lille, School of Management)

  • J.-C. VERGNAUD

    (EUREQua-CNRS, Université de Paris 1)

Dans cet article, nous formalisons deux critères de décisions qui tentent de rendre compte de deux logiques différentes d'interprétation du Principe de précaution. Le premier critère correspond à la maximisation du minimum de l'espérance d'utilité alors que le second critère correspond à la minimisation du maximum de l'espérance de regret. Les deux critères de décisions sont appliqués à un problème économique où l'incertitude est mesurée par une famille de probabilités. Nous montrons qu'il existe un intervalle de probabilités sur lequel les choix relatifs aux deux critères divergent. Plus particulièrement, nous montrons que sur cet intervalle, le second critère à la différence du premier, conduit toujours à retenir la décision la plus précautionneuse, les décisions étant identiques sur les autres intervalles.

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Paper provided by Université catholique de Louvain, Institut de Recherches Economiques et Sociales (IRES) in its series Discussion Papers (REL - Recherches Economiques de Louvain) with number 2006021.

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Length: 20
Date of creation: 01 Jun 2006
Date of revision:
Handle: RePEc:ctl:louvre:2006021
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  1. Thibault Gajdos & Jean-Marc Tallon & Jean-Christophe Vergnaud, 2002. "Decision Making with Imprecise Probabilistic Information," ICER Working Papers - Applied Mathematics Series 18-2003, ICER - International Centre for Economic Research, revised May 2003.
  2. Claude HENRY & Marc HENRY, 2002. "Formalization and Applications of the Precuationary Principle," Discussion Papers (IRES - Institut de Recherches Economiques et Sociales) 2002009, Université catholique de Louvain, Institut de Recherches Economiques et Sociales (IRES).
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