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Information Acquisition and Welfare

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  • Luca Colombo
  • Gianluca Femminis
  • Alessandro Pavan

Abstract

We study information acquisition in a ‡exible framework with strategic complementarity or substitutability in actions and a rich set of externalities that are responsible for possible wedges between the equilibrium and the efficient acquisition of information. First, we relate the (in)efficiency in the acquisition of information to the (in)efficiency in the use of information and explain why efficiency in the use does not guarantee efficiency in the acquisition. Next, we show how the acquisition of private information affects the social value of public information (i.e., the comparative statics of equilibrium welfare with respect to the quality of public information). Finally, we illustrate the implications of our results in a few applications that include beauty contests, monetary economies with price-setting complementarities, and economies with negative production externalities.

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Bibliographic Info

Paper provided by Northwestern University, Center for Mathematical Studies in Economics and Management Science in its series Discussion Papers with number 1554.

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Date of creation: 01 May 2012
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Handle: RePEc:nwu:cmsems:1554

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Postal: Center for Mathematical Studies in Economics and Management Science, Northwestern University, 580 Jacobs Center, 2001 Sheridan Road, Evanston, IL 60208-2014
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Web page: http://www.kellogg.northwestern.edu/research/math/
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Keywords: endogenous information; strategic complementarity/substitutability; externalities; efficiency; welfare JEL Classification Numbers: C72; D62; D83; E50.;

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References

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  1. Laura Veldkamp & Christian Hellwig, 2006. "Knowing What Others Know: Coordination Motives in Information Acquisition," Working Papers 06-14, New York University, Leonard N. Stern School of Business, Department of Economics.
  2. Vives, X., 1990. "How Fast Do Rational Agents Learn?," UFAE and IAE Working Papers 135-90, Unitat de Fonaments de l'Anàlisi Econòmica (UAB) and Institut d'Anàlisi Econòmica (CSIC).
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  8. Stephen Morris & Hyun Song Shin, 2005. "Central Bank Transparency and the Signal Value of Prices," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 36(2), pages 1-66.
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  15. Richard A. Tybout, 1972. "Pricing Pollution and Other Negative Externalities," Bell Journal of Economics, The RAND Corporation, vol. 3(1), pages 252-266, Spring.
  16. Lars E. O. Svensson, 2006. "Social Value of Public Information: Comment: Morris and Shin (2002) Is Actually Pro-Transparency, Not Con," American Economic Review, American Economic Association, vol. 96(1), pages 448-452, March.
  17. Stephen Morris & Hyun Song Shin & Hui Tong, 2006. "Social Value of Public Information: Morris and Shin (2002) Is Actually Pro-Transparency, Not Con: Reply," American Economic Review, American Economic Association, vol. 96(1), pages 453-455, March.
  18. Baumol,William J. & Oates,Wallace E., 1988. "The Theory of Environmental Policy," Cambridge Books, Cambridge University Press, number 9780521311120, October.
  19. David P. Myatt & Chris Wallace, 2008. "On the Sources and Value of Information: Public Announcements and Macroeconomic Performance," Economics Series Working Papers 411, University of Oxford, Department of Economics.
  20. Christian Hellwig, 2004. "Heterogeneous Information and the Benefits of Public Information Disclosures (October 2005)," UCLA Economics Online Papers 283, UCLA Department of Economics.
  21. Mauro Roca, 2010. "Transparency and Monetary Policy with Imperfect Common Knowledge," IMF Working Papers 10/91, International Monetary Fund.
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Cited by:
  1. Ui, Takashi, 2014. "The Social Value of Public Information with Convex Costs of Information Acquisition," Discussion Papers 2014-05, Graduate School of Economics, Hitotsubashi University.

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