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Incertitude en économie de l'environnement

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  • Jean-Marc Talion
  • Jean-Christophe Vergnaud

Abstract

[fre] Nous proposons dans cet article un panorama des modélisations de la prise de décision dans des situations de risque ou d'incertain. Une attention particulière est portée aux incertitudes environnementales. Après avoir rappelé les modèles canoniques d'espérance d'utilité, nous développons les intuitions sous-jacentes au comportement d'aversion vis-à-vis de l'ambiguïté ou de l'imprécision. Nous étudions ensuite la manière dont les agents prennent leur décision dans l'incertain (par exemple des décisions d'assurance) en fonction des réalisations des aléas qu'ils ont personnellement subi (leur vécu) plutôt qu'en fonction d'une information statistique plus neutre. Nous développons la possibilité que les acteurs économiques aient des préférences incomplètes, en ce sens qu'ils n'arrivent pas à classer toutes les alternatives incertaines qui se présentent à eux. Enfin, nous considérons les problèmes posés par la dépendance des préférences à la formulation du problème de décision en nous concentrant plus particulièrement sur le biais d'ancrage et ses conséquences dans les enquêtes d'évaluation contingente. [eng] Uncertainty in Environmental Economics . We review models of decision making under risk and uncertainty, with a special attention to environmental uncertainties. After a quick review of standard expected utility theories, we present models of ambiguity and imprecision aversion. We then study how the personal history of individuals (say in terms of the realization of a risk) affect their behavior {e.g., their insurance behavior). We also explore incompleteness of preferences. We finally consider problems caused by framing effects, in particular, the anchoring effect.

Suggested Citation

  • Jean-Marc Talion & Jean-Christophe Vergnaud, 2007. "Incertitude en économie de l'environnement," Revue Française d'Économie, Programme National Persée, vol. 22(2), pages 3-56.
  • Handle: RePEc:prs:rfreco:rfeco_0769-0479_2007_num_22_2_1647
    DOI: 10.3406/rfeco.2007.1647
    Note: DOI:10.3406/rfeco.2007.1647
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    Cited by:

    1. Céline Grislain-Letrémy, 2018. "Natural Disasters: Exposure and Underinsurance," Annals of Economics and Statistics, GENES, issue 129, pages 53-83.
    2. repec:dau:papers:123456789/7845 is not listed on IDEAS
    3. repec:dau:papers:123456789/13276 is not listed on IDEAS

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