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Duopole de Bertrand, asymétrie d'information et bien-être collectif

  • Michel Mougeot
  • Florence Naegelen

[eng] Bertrand duopoly, asynmetric information and social welfare In this paper, we consider a market with two firms having a private information on their marginal cost. In this context of asynmetric information, we prove that a two stages mechanism is not optimal from a social welfare point of view. [fre] Duopole de Bertrand. Asymétrie d'information et bien-être collectif Cet article étudie la concurrence en prix dans un duopole lorsque les deux entreprises ont une information privée sur leur coût marginal. La solution en deux étapes consistant à dissocier la mise en concurrence par les prix de la détermination de la quantité échangée est comparée avec une politique optimale maxi­misant le surplus collectif compte tenu de la demande. Il est démontré que le mécanisme en deux étapes implique un bien-être collectif inférieur à celui que réalise un mécanisme en une étape définissant un transfert monétaire global et la quantité simultanément.

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Article provided by Programme National Persée in its journal Revue économique.

Volume (Year): 42 (1991)
Issue (Month): 6 ()
Pages: 1027-1046

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Handle: RePEc:prs:reveco:reco_0035-2764_1991_num_42_6_409328
Note: DOI:10.3406/reco.1991.409328
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