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A Dynamic Duopoly Model with Asymmetric Information


  • Caminal, Ramon


This paper investigates the impact of asymmetric information on the set of equilibria of a two-period duopoly game with price competition. It turns out that all admissible sequential equilibria of this game share a "collusive" character, i.e., ex ante expected profits for a firm of any type are higher than in the complete information case. For small uncertainties, the results are asymmetric: a small probability of a "good" type firm does not make much difference on the set of equilibrium payoffs, but a small probability of a "bad" type firm does. These results survive the introduction of Kohlberg and Martens' (1986) stability concept. Copyright 1990 by Blackwell Publishing Ltd.

Suggested Citation

  • Caminal, Ramon, 1990. "A Dynamic Duopoly Model with Asymmetric Information," Journal of Industrial Economics, Wiley Blackwell, vol. 38(3), pages 315-333, March.
  • Handle: RePEc:bla:jindec:v:38:y:1990:i:3:p:315-33

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    References listed on IDEAS

    1. Porter, Michael E, 1976. "Interbrand Choice, Media Mix and Market Performance," American Economic Review, American Economic Association, vol. 66(2), pages 398-406, May.
    2. Nickell, Stephen J & Metcalf, David, 1978. "Monopolistic Industries and Monopoly Profits or, Are Kellogg's Cornflakes Overpriced?," Economic Journal, Royal Economic Society, vol. 88(350), pages 254-268, June.
    3. Pagoulatos, Emilio & Sorensen, Robert, 1986. "What determines the elasticity of industry demand?," International Journal of Industrial Organization, Elsevier, vol. 4(3), pages 237-250, September.
    4. Joseph E. Stiglitz & G. Frank Mathewson (ed.), 1986. "New Developments in the Analysis of Market Structure," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262690934, January.
    5. Cowling, Keith & Waterson, Michael, 1976. "Price-Cost Margins and Market Structure," Economica, London School of Economics and Political Science, vol. 43(171), pages 267-274, August.
    6. Connor, John M & Peterson, Everett B, 1992. "Market-Structure Determinants of National Brand-Private Label Price Differences of Manufactured Food Products," Journal of Industrial Economics, Wiley Blackwell, vol. 40(2), pages 157-171, June.
    7. A. P. Lerner, 1934. "The Concept of Monopoly and the Measurement of Monopoly Power," Review of Economic Studies, Oxford University Press, vol. 1(3), pages 157-175.
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    Cited by:

    1. Dan Bernhardt & Bart Taub, 2015. "Learning about common and private values in oligopoly," RAND Journal of Economics, RAND Corporation, vol. 46(1), pages 66-85, March.
    2. Keshab BHATTARAI, "undated". "Bargaining, Coalitions, Signalling and Repeated Games for Economic Development and Poverty Alleviation," EcoMod2008 23800012, EcoMod.
    3. Barrachina, Alex & Tauman, Yair & Urbano, Amparo, 2014. "Entry and espionage with noisy signals," Games and Economic Behavior, Elsevier, vol. 83(C), pages 127-146.
    4. 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.

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