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Econométrie structurelle et comportements stratégiques

  • Frédéric Jouneau-Sion
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    [fre] Le développement des techniques économétriques permet désormais d'estimer des modèles de comportements stratégiques. On peut notamment étudier des modèles économiques de concurrence imparfaite. Dans la plupart des cas ces estimations reposent sur l'existence d'un hypothétique échantillon infini. On montre que cette hypothèse induit implicitement une modification de la concurrence qui peut être préjudiciable à l'objet d'étude. Nous étudions trois cas selon que l'asymptotique est fondée sur l'augmentation du nombre de joueurs, du nombre de répétitions du jeu ou du nombre de produits. Une estimation réellement conforme au modèle économique sous-jacent nécessite de s'affranchir de l'hypothèse d'échantillon infini ou de contrôler les expériences. On propose trois possibilités pour contourner cette difficulté et on examine leurs difficultés respectives. [eng] Thanks to some recent developments in econometrics, the strategic behaviours may now be empirically studied. Most of these studies concern imperfect competition mechanisms. It is shown that the usual asymptotic approach of econometrics is not suited for this kind of studies. Indeed increasing the number of repetitions may drastically change the outcome of a game. We study three different situations : the size of sample being either the number of players, the number of repetitions or the number of goods. Some alternatives to the usual asymptotic approach are proposed to overcome this problem.

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    Article provided by Programme National Persée in its journal Revue française d'économie.

    Volume (Year): 15 (2000)
    Issue (Month): 2 ()
    Pages: 195-217

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    Handle: RePEc:prs:rfreco:rfeco_0769-0479_2000_num_15_2_1494
    Note: DOI:10.3406/rfeco.2000.1494
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