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Transmission stratégique de l'information et certification (Strategic Information Transmission and Certification)


  • Frederic Koessler

    () (THEMA, Université de Cergy-Pontoise)

  • Francoise Forges

    () (CEREMADE, Paris-Dauphine University)


Nous présentons une synthèse des principaux modèles de transmission stratégique de l'information. Dans une première partie, nous étudions les jeux dits de "cheap-talk", c'est-à-dire les jeux de communication directe dans lesquels les messages sont gratuits et non vérifiables. Nous analysons ensuite les jeux dits de "persuasion", dans lesquels les joueurs sont capables de certifier leurs informations. Dans la dernière partie, nous montrons dans différents cadres comment plusieurs étapes de communication bilatérales et la certification retardée de l'information permettent d'étendre de manière significative l'ensemble des résultats d'équilibre, même si un seul individu détient des informations privées. L'article propose des caractérisations géométriques des équilibres, de nombreux exemples et des applications. (This paper surveys the main models of strategic information transmission. First, we study cheap talk games, i.e., direct communication games in which messages are costless and unverifiable. Then, we analyze persuasion games, in which players' information is certifiable. Finally, we show in various settings how multiple stages of bilateral communication and delayed information certification may significantly expand the set of equilibrium outcomes, even if only one individual is privately informed. Several geometric equilibrium characterizations, examples and applications are examined along the paper.)

Suggested Citation

  • Frederic Koessler & Francoise Forges, 2006. "Transmission stratégique de l'information et certification (Strategic Information Transmission and Certification)," THEMA Working Papers 2006-04, THEMA (THéorie Economique, Modélisation et Applications), Université de Cergy-Pontoise.
  • Handle: RePEc:ema:worpap:2006-04

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    cheap talk; certification; credibility; incomplete information; information transmission; jointly controlled lotteries; verifiable types;

    JEL classification:

    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design


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