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Endogenous information structures

  • Sjaak Hurkens
  • Nir Vulkan

Many models in the economics literature deal with strategic situations with privately informed agents. In those models the information structure is assumed to be exogenous and common knowledge. We consider whether such models, and the results they produce, are robust with respect the endogenization of the information structure. The results depend on whether information acquisition is secret or private, and on whether the strategic situation involves simultaneous or sequential moves. In particular we find that only when information is secretly acquired and moves are simultaneous, the results are fully robust. When information is acquired secretly but moves are sequential additional equilibria may appear. Instead, private information acquisition may make the equilibrium set smaller.

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Paper provided by Department of Economics and Business, Universitat Pompeu Fabra in its series Economics Working Papers with number 386.

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Date of creation: Apr 1999
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Handle: RePEc:upf:upfgen:386
Contact details of provider: Web page: http://www.econ.upf.edu/

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  1. Grossman, Sanford J & Stiglitz, Joseph E, 1980. "On the Impossibility of Informationally Efficient Markets," American Economic Review, American Economic Association, vol. 70(3), pages 393-408, June.
  2. Hurkens, Sjaak & Vulkan, Nir, 2003. "Free entry does not imply zero profits," Economics Letters, Elsevier, vol. 81(3), pages 285-290, December.
  3. Hurkens, Sjaak & Vulkan, Nir, 2001. "Information acquisition and entry," Journal of Economic Behavior & Organization, Elsevier, vol. 44(4), pages 467-479, April.
  4. Crémer, Jacques & Khalil, Fahad, 1991. "Gathering Information before Signing a Contract," IDEI Working Papers 5, Institut d'Économie Industrielle (IDEI), Toulouse.
  5. Vives, Xavier, 1988. "Aggregation of Information in Large Cournot Markets," Econometrica, Econometric Society, vol. 56(4), pages 851-76, July.
  6. Cremer, J. & Khalil, F & Rochet, J.-C., 1996. "Strategic Information Gathering Before a Contract is Offered," Papers 976.425, Toulouse - GREMAQ.
  7. Hwang Hae-shin, 1993. "Optimal Information Acquisition for Heterogenous Duopoly Firms," Journal of Economic Theory, Elsevier, vol. 59(2), pages 385-402, April.
  8. Cremer, Jacques & Khalil, Fahad, 1994. "Gathering information before the contract is offered: The case with two states of nature," European Economic Review, Elsevier, vol. 38(3-4), pages 675-682, April.
  9. Nicola Persico, 2000. "Information Acquisition in Auctions," Econometrica, Econometric Society, vol. 68(1), pages 135-148, January.
  10. Li, Lode & McKelvey, Richard D. & Page, Talbot, 1987. "Optimal research for cournot oligopolists," Journal of Economic Theory, Elsevier, vol. 42(1), pages 140-166, June.
  11. Esther Hauk & Sjaak Hurkens, 1996. "Secret information acquisition in Cournot markets," Economics Working Papers 233, Department of Economics and Business, Universitat Pompeu Fabra, revised Aug 1997.
  12. Jean-Pierre Ponssard, 1979. "The Strategic Role of Information on the Demand Function in an Oligopolistic Market," Management Science, INFORMS, vol. 25(3), pages 243-250, March.
  13. Tom K. Lee, 1982. "Resource Information Policy and Federal Resource Leasing," Bell Journal of Economics, The RAND Corporation, vol. 13(2), pages 561-568, Autumn.
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