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Speculative attacks: unique equilibrium and transparency

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  • Heinemann, Frank
  • Illing, Gerhard

Abstract

Models with multiple equilibria are a popular way to explain currency attacks. Morris and Shin (1998) have shown that, in the context of those models, unique equilibria may prevail once noisy private information is introduced. In this paper, we apply the method of Morris and Shin to a broader class of probability distributions and show-using the technique of iterated elimination of dominated strategies-that their results continue to hold, even if we allow for sunspots and individual uncertainty about strategic behavior of other agents. We provide a clear exposition of the logic of this model and we analyze the impact of transparency on the probability of a speculative attack. For the case of uniform distribution of noisy signals, we show that increased transparency of government policy reduces the likelihood of attacks.

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Bibliographic Info

Article provided by Elsevier in its journal Journal of International Economics.

Volume (Year): 58 (2002)
Issue (Month): 2 (December)
Pages: 429-450

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Handle: RePEc:eee:inecon:v:58:y:2002:i:2:p:429-450

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Web page: http://www.elsevier.com/locate/inca/505552

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References

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  1. Stephen Morris & Hyun Song Shin, 2001. "Coordination risk and the price of debt," LSE Research Online Documents on Economics 25046, London School of Economics and Political Science, LSE Library.
  2. Cukierman, Alex & Meltzer, Allan H, 1986. "A Theory of Ambiguity, Credibility, and Inflation under Discretion and Asymmetric Information," Econometrica, Econometric Society, vol. 54(5), pages 1099-1128, September.
  3. Guesnerie, Roger, 1992. "An Exploration of the Eductive Justifications of the Rational-Expectations Hypothesis," American Economic Review, American Economic Association, vol. 82(5), pages 1254-78, December.
  4. Hans Carlsson & Eric van Damme, 1993. "Global Games and Equilibrium Selection," Levine's Working Paper Archive 122247000000001088, David K. Levine.
  5. Svensson, Lars E.O. & Faust, John, 1998. "Transparency and Credibility: Monetary Policy with Unobservable Goals," Seminar Papers 636, Stockholm University, Institute for International Economic Studies.
  6. Kyoji Fukao, 2003. "Coordination Failures under Incomplete Information and Global Games," Discussion papers 03006, Research Institute of Economy, Trade and Industry (RIETI).
  7. D. B. Bernheim, 2010. "Rationalizable Strategic Behavior," Levine's Working Paper Archive 661465000000000381, David K. Levine.
  8. David M. Frankel & Stephen Morris & Ady Pauzner, 2000. "Equilibrium Selection in Global Games with Strategic Complementarities," Econometric Society World Congress 2000 Contributed Papers 1490, Econometric Society.
  9. Adam Brandenburger, 1992. "Knowledge and Equilibrium in Games," Journal of Economic Perspectives, American Economic Association, vol. 6(4), pages 83-101, Fall.
  10. AUMANN, Robert J., . "Subjectivity and correlation in randomized strategies," CORE Discussion Papers RP -167, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  11. 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.
  12. Frank Heinemann, 2000. "Unique Equilibrium in a Model of Self-Fulfilling Currency Attacks: Comment," American Economic Review, American Economic Association, vol. 90(1), pages 316-318, March.
  13. Milgrom, Paul & Roberts, John, 1990. "Rationalizability, Learning, and Equilibrium in Games with Strategic Complementarities," Econometrica, Econometric Society, vol. 58(6), pages 1255-77, November.
  14. Frank Heinemann, 1997. "Rationalizable expectations and sunspot equilibria in an overlapping-generations economy," Journal of Economics, Springer, vol. 65(3), pages 257-277, October.
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