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Information Acquisition and Relative Efficiency of Competitive, Oligopoly and Monopoly Markets

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  • Hwang, Hae-shin

Abstract

This paper analyzes the relative efficiency of a competitive equilibrium against Cournot oligopoly and monopoly equilibria when firms have diverse private information about the stochastic market demand. When firms have information of the same precision, the competitive equilibrium yields a larger expected welfare. However, when information is costly, Cournot oligopoly and monopoly firms acquire more information and, hence, may yield a larger expected welfare than the competitive firms under certain conditions. The author also finds that competitive firms acquire less than the efficient level of information while Cournot oligopoly and monopoly firms may acquire more than the efficient level. Copyright 1995 by Economics Department of the University of Pennsylvania and the Osaka University Institute of Social and Economic Research Association.

Suggested Citation

  • Hwang, Hae-shin, 1995. "Information Acquisition and Relative Efficiency of Competitive, Oligopoly and Monopoly Markets," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 36(2), pages 325-340, May.
  • Handle: RePEc:ier:iecrev:v:36:y:1995:i:2:p:325-40
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    Citations

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    Cited by:

    1. Qihong Liu Konstantinos Serfes, 2001. "Endogenous Acquisition Of Information On Consumer Willingness To Pay In A Product Differentiated Duopoly," Industrial Organization 0110001, EconWPA.
    2. Hurkens, Sjaak & Vulkan, Nir, 2006. "Endogenous private information structures," European Economic Review, Elsevier, vol. 50(1), pages 35-54, January.
    3. Juan-José Ganuza & Jos Jansen, 2013. "Too Much Information Sharing? Welfare Effects of Sharing Acquired Cost Information in Oligopoly," Journal of Industrial Economics, Wiley Blackwell, vol. 61(4), pages 845-876, December.
    4. Esther Hauk & Sjaak Hurkens, 2001. "Secret information acquisition in Cournot markets," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 18(3), pages 661-681.
    5. Hurkens, Sjaak & Vulkan, Nir, 2001. "Information acquisition and entry," Journal of Economic Behavior & Organization, Elsevier, vol. 44(4), pages 467-479, April.
    6. Kazunori Miwa, 2013. "The Impact of Mandatory Disclosure on Information Acquisition: Theory and Experiment," Discussion Papers in Economics and Business 13-01, Osaka University, Graduate School of Economics and Osaka School of International Public Policy (OSIPP).
    7. Markus Christen, 2005. "Research Note---Cost Uncertainty Is Bliss: The Effect of Competition on the Acquisition of Cost Information for Pricing New Products," Management Science, INFORMS, vol. 51(4), pages 668-676, April.
    8. Güth, Sandra & Güth, Werner & Müller, Wieland, 2000. "Private information, risk aversion, and the evolution of market research," SFB 373 Discussion Papers 2000,113, Humboldt University of Berlin, Interdisciplinary Research Project 373: Quantification and Simulation of Economic Processes.
    9. Medín, J. Andrés Faíña & Rodríguez, Jesús López & Rodríguez, José López, 2003. "Information Exchanges in Cournot Duopolies," Revista Brasileira de Economia - RBE, FGV/EPGE - Escola Brasileira de Economia e Finanças, Getulio Vargas Foundation (Brazil), vol. 57(1), January.
    10. Thomas D. Jeitschko & Ting Liu & Tao Wang, 2016. "Information Acquisition, Signaling and Learning in Duopoly," Department of Economics Working Papers 16-07, Stony Brook University, Department of Economics.
    11. Myatt, David P. & Wallace, Chris, 2015. "Cournot competition and the social value of information," Journal of Economic Theory, Elsevier, vol. 158(PB), pages 466-506.

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