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Endogenous information structures

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  • Sjaak Hurkens
  • Nir Vulkan

Abstract

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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Bibliographic Info

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

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Web page: http://www.econ.upf.edu/

Related research

Keywords: Information acquisition; private information; equilibrium;

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References

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  1. 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.
  2. Sjaak Hurkens & Nir Vulkan, 1997. "Free entry does not imply zero profits," Economics Working Papers 268, Department of Economics and Business, Universitat Pompeu Fabra.
  3. Khalil, F & Rochet, J-C, 1997. "Strategic Information Gathering Before a Contract is Offered," Working Papers 97-15, University of Washington, Department of Economics.
  4. Cremer, Jacques & Khalil, Fahad, 1992. "Gathering Information before Signing a Contract," American Economic Review, American Economic Association, vol. 82(3), pages 566-78, June.
  5. 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.
  6. 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.
  7. Vives, Xavier, 1988. "Aggregation of Information in Large Cournot Markets," Econometrica, Econometric Society, vol. 56(4), pages 851-76, July.
  8. Sanford J Grossman & Joseph E Stiglitz, 1997. "On the Impossibility of Informationally Efficient Markets," Levine's Working Paper Archive 1908, David K. Levine.
  9. Hwang Hae-shin, 1993. "Optimal Information Acquisition for Heterogenous Duopoly Firms," Journal of Economic Theory, Elsevier, vol. 59(2), pages 385-402, April.
  10. Hurkens, Sjaak & Vulkan, Nir, 2001. "Information acquisition and entry," Journal of Economic Behavior & Organization, Elsevier, vol. 44(4), pages 467-479, April.
  11. 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.
  12. 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.
  13. Nicola Persico, 2000. "Information Acquisition in Auctions," Econometrica, Econometric Society, vol. 68(1), pages 135-148, January.
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