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Speculative Attacks with Multiple Sources of Public Information

  • Camille Cornand
  • Frank Heinemann

We propose a speculative attack model in which agents receive multiple public signals. Diverse pieces of public information can be taken into account differently by different players and are likely to lead to different appreciations "ex post". This process defines players' expected private values of a successful attack. The main result shows that equilibrium uniqueness depends on two conditions: (i) signals are sufficiently dispersed and (ii) private beliefs about signals' relative precision differ sufficiently. We derive some implications for information dissemination policy. Transparency in this context is multidimensional: it concerns the publicity of announcements, the number of signals disclosed and their precision. Copyright � The editors of the "Scandinavian Journal of Economics" 2009 .

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Article provided by Wiley Blackwell in its journal Scandinavian Journal of Economics.

Volume (Year): 111 (2009)
Issue (Month): 1 (03)
Pages: 73-102

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Handle: RePEc:bla:scandj:v:111:y:2009:i:1:p:73-102
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  1. Stephen Morris & Hyun Song Shin, 2000. "Global Games: Theory and Applications," Cowles Foundation Discussion Papers 1275R, Cowles Foundation for Research in Economics, Yale University, revised Aug 2001.
  2. Heinemann, Frank & Illing, Gerhard, 2002. "Speculative attacks: unique equilibrium and transparency," Journal of International Economics, Elsevier, vol. 58(2), pages 429-450, December.
  3. Morris, Stephen & Shin, Hyun Song, 1997. "Unique Equilibrium in a Model of Self-fulfilling Currency Attacks," CEPR Discussion Papers 1687, C.E.P.R. Discussion Papers.
  4. Axel Lindner, 2003. "Does Transparency of Central Banks Produce Multiple Equilibria on Currency Markets?," IWH Discussion Papers 178, Halle Institute for Economic Research.
  5. Maurice Obstfeld, 1995. "Models of Currency Crises with Self-Fulfilling Features," NBER Working Papers 5285, National Bureau of Economic Research, Inc.
  6. Hellwig, Christian, 2002. "Public Information, Private Information, and the Multiplicity of Equilibria in Coordination Games," Journal of Economic Theory, Elsevier, vol. 107(2), pages 191-222, December.
  7. Maurice Obstfeld, 1984. "Rational and Self-Fulfilling Balance-of-Payments Crises," NBER Working Papers 1486, National Bureau of Economic Research, Inc.
  8. Blinder, Alan S & Morgan, John, 2005. "Are Two Heads Better than One? Monetary Policy by Committee," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 37(5), pages 789-811, October.
  9. Metz, Christina E., 2000. "Private and public information in self-fulfilling currency crises," Research Notes 00-7, Deutsche Bank Research.
  10. Jack High (ed.), 2001. "Competition," Books, Edward Elgar, number 1751, March.
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