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Une vision de la prise de décision rationnelle et irrationnelle, un construit individuel et collectif


  • Delphine Van Hoorebeke


Is decision making subject to irrationality? Mathematics and economics indicate that irrationality exists. It is described as part of the Real, but, it is still perceived as a 'margin of error'. In order to show that the decision depends on irrationality whose impact should not simply be randomized, this article, in a first step, precisely describes the concept of irrational decision. The second part talks about contagion, which is intrinsically linked to irrational decision. It details its different measurement, while the last part describes an experimental study on the subject La prise de décision est-elle soumise à l'irrationalité ? Les mathématiques, l'économie indiquent que l'irrationnel existe, il y est décrit comme faisant partie du Réel. Néanmoins, il reste perçu comme une marge d'erreur' pour certains auteurs. Dans le but de montrer que la décision dépend d'une irrationalité dont l'impact ne doit pas simplement être randomisé, cet article, dans une première étape, décrit précisément le concept de décision irrationnelle, puis d'une contagion qui lui est intrinsèquement liée, et de sa mesure, tandis que la dernière partie détaille une étude expérimentale sur le sujet

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  • Delphine Van Hoorebeke, 2013. "Une vision de la prise de décision rationnelle et irrationnelle, un construit individuel et collectif," CIRANO Working Papers 2013s-13, CIRANO.
  • Handle: RePEc:cir:cirwor:2013s-13

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    References listed on IDEAS

    1. Akerlof, George A & Dickens, William T, 1982. "The Economic Consequences of Cognitive Dissonance," American Economic Review, American Economic Association, vol. 72(3), pages 307-319, June.
    2. Kahneman, Daniel & Tversky, Amos, 1979. "Prospect Theory: An Analysis of Decision under Risk," Econometrica, Econometric Society, vol. 47(2), pages 263-291, March.
    3. M. Keith Chen & Venkat Lakshminarayanan & Laurie Santos, 2005. "The Evolution of Our Preferences: Evidence from Capuchin-Monkey Trading Behavior," Cowles Foundation Discussion Papers 1524, Cowles Foundation for Research in Economics, Yale University.
    4. André Orléan, 2004. "Les marchés financiers sont-ils rationnels ?," Reflets et perspectives de la vie économique, De Boeck Université, vol. 0(2), pages 35-41.
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    Decision making; irrationality; Prise de décision; irrationalité;

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