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Information imparfaite et économie publique

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  • Jean-Jacques Laffont

Abstract

[fre] Une caractéristique essentielle des systèmes économiques est la décentralisation de l'information. Lorsqu'une décision collective doit être prise, le décideur social doit rassembler une information dont chaque agent possède des éléments qu'il est le seul à connaître. Par suite il se pose le problème du comportement straté­gique vis-à-vis de cette information détenue de façon privative. Etant donné une fonction de choix social qui associe aux caractéristiques informationnelles des agents une décision collective souhaitée par le décideur social, comment peut-on la concrétiser, c'est-à-dire trouver un jeu dont les équilibres stratégiques condui­sent à la décision souhaitée ?. L'objectif de cette note est d'exposer la problématique générale de la concrétisation et d'en présenter quelques résultats pour des problèmes classiques d'économie publique. [eng] Imperfect information and public economics . Jean-Jacques Laffont. Decentralization of information is an essential characteristic of economic Systems. To take a collective decision, the decision maker must gather pieces of information which are privately owned. Strategic behavior with respect to this information must then be expected. Given a social choice function which associates to agents' informational characteristics a collective décision desired by thé décision maker, how is it possible to implement it, i.e. to find a game the strategic equilibria of which lead to the desired decision. The purpose of this note is to present the implementation problem and to give some results obtained in public economics.

Suggested Citation

  • Jean-Jacques Laffont, 1982. "Information imparfaite et économie publique," Revue Économique, Programme National Persée, vol. 33(1), pages 5-29.
    • Handle: RePEc:prs:reveco:reco_0035-2764_1982_num_33_1_408641
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    References listed on IDEAS

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