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Expectations and information in second generation currency crises models

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  • Massimo Sbracia

    ()
    (Banca dÂ’Italia, Research Department)

  • Andrea Zaghini

    ()
    (Banca dÂ’Italia, Research Department)

Abstract

We explore the role of expectations in second generation currency crisis models, proving that sudden shifts in speculators' beliefs can trigger currency devaluations, even without any sizable worsening in the fundamentals. In our incomplete information game, mean-preserving changes in speculatorsÂ’ expectations may drive agents to a unique equilibrium with a self-fulfilling attack. In particular, our model supports the thesis that uncertainty matters, since a sufficiently large increase in speculators' uncertainty over the fundamentals is likely to trigger a currency crisis. Following a recent line of research, we also compare the results of private and public information models and find the following paradox; if speculators have private information, the fact that the state of fundamentals is publicly revealed turns out to be more advantageous to the government when fundamentals are bad.

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Bibliographic Info

Paper provided by Bank of Italy, Economic Research and International Relations Area in its series Temi di discussione (Economic working papers) with number 391.

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Date of creation: Dec 2000
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Handle: RePEc:bdi:wptemi:td_391_00

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Keywords: currency crises; speculative attack; multiple equilibria;

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  1. Fukao, Kyoji, 2003. "Coordination Failures under Incomplete Information and Global Games," Hitotsubashi Journal of Economics, Hitotsubashi University, vol. 44(1), pages 59-73, June.
  2. Corsetti, G. & Pesenti, P. & Roubini, N., 1998. "What Caused the Asian Currency and Financial Crisis?," Papers 343, Banca Italia - Servizio di Studi.
  3. Maurice Obstfeld, 1994. "The Logic of Currency Crises," NBER Working Papers 4640, National Bureau of Economic Research, Inc.
  4. Maurice Obstfeld, 1984. "Rational and Self-Fulfilling Balance-of-Payments Crises," NBER Working Papers 1486, National Bureau of Economic Research, Inc.
  5. Heinemann, Frank & Illing, Gerhard, 2002. "Speculative attacks: Unique equilibrium and transparency," Munich Reprints in Economics 19430, University of Munich, Department of Economics.
  6. Carlsson, H. & Damme, E.E.C. van, 1993. "Global games and equilibrium selection," Open Access publications from Tilburg University urn:nbn:nl:ui:12-154416, Tilburg University.
  7. Obstfeld, Maurice, 1996. "Models of Currency Crises with Self-fulfilling Features," CEPR Discussion Papers 1315, C.E.P.R. Discussion Papers.
  8. 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.
  9. Giancarlo Corsetti & Paolo Pesenti & Nouriel Roubini, 1998. "What Caused the Asian Currency and Financial Crisis? Part I: A Macroeconomic Overview," NBER Working Papers 6833, National Bureau of Economic Research, Inc.
  10. Flood, Robert P. & Garber, Peter M., 1984. "Collapsing exchange-rate regimes : Some linear examples," Journal of International Economics, Elsevier, vol. 17(1-2), pages 1-13, August.
  11. Rubinstein, Ariel, 1989. "The Electronic Mail Game: Strategic Behavior under "Almost Common Knowledge."," American Economic Review, American Economic Association, vol. 79(3), pages 385-91, June.
  12. Krugman, Paul, 1979. "A Model of Balance-of-Payments Crises," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 11(3), pages 311-25, August.
  13. John C. Harsanyi & Reinhard Selten, 1988. "A General Theory of Equilibrium Selection in Games," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262582384, December.
  14. Paul Krugman, 1996. "Are Currency Crises Self-Fulfilling?," NBER Chapters, in: NBER Macroeconomics Annual 1996, Volume 11, pages 345-407 National Bureau of Economic Research, Inc.
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