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Strong Contagion with Weak Spillovers

Author

Listed:
  • Martin Ellison

    (University of Warwick and CEPR)

  • Liam Graham

    (University of Warwick)

  • Jouka Vilmunen

    (Bank of Finland)

Abstract

In this paper, we develop a model which explains why events in one market may trigger similar events in other markets, even though at first sight the markets appear to be only weakly related. We allow for multiple equilibria and learning dynamics in each market, and show that a jump between equilibria in one market is contagious because it more than doubles the probability of a similar jump in another market. We claim that contagion is strong since equilibrium jumps become highly synchronised across markets. Spillovers are weak because the instantaneous spillover of events from one market to another is small. To illustrate our result, we demonstrate how a currency crisis may be contagious with only weak links between countries. Other examples where weak spillovers would create strong contagion are various models of monetary policy, imperfect competition and endogenous growth
(This abstract was borrowed from another version of this item.)

Suggested Citation

  • Martin Ellison & Liam Graham & Jouka Vilmunen, 2005. "Strong Contagion with Weak Spillovers," Money Macro and Finance (MMF) Research Group Conference 2005 91, Money Macro and Finance Research Group.
  • Handle: RePEc:mmf:mmfc05:91
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    References listed on IDEAS

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    1. Aghion, Philippe & Bacchetta, Philippe & Banerjee, Abhijit, 2000. "A simple model of monetary policy and currency crises," European Economic Review, Elsevier, vol. 44(4-6), pages 728-738, May.
    2. Williams, Noah, 2004. "Small noise asymptotics for a stochastic growth model," Journal of Economic Theory, Elsevier, vol. 119(2), pages 271-298, December.
    3. Giorgio E. Primiceri, 2006. "Why Inflation Rose and Fell: Policy-Makers' Beliefs and U. S. Postwar Stabilization Policy," The Quarterly Journal of Economics, Oxford University Press, vol. 121(3), pages 867-901.
    4. Bullard, James & Cho, In-Koo, 2005. "Escapist policy rules," Journal of Economic Dynamics and Control, Elsevier, vol. 29(11), pages 1841-1865, November.
    5. Bruce McGough, 2006. "Shocking Escapes," Economic Journal, Royal Economic Society, vol. 116(511), pages 507-528, April.
    6. Masson, Paul, 1999. "Contagion:: macroeconomic models with multiple equilibria," Journal of International Money and Finance, Elsevier, vol. 18(4), pages 587-602, August.
    7. Gerali, Andrea & Lippi, Francesco, 2001. "On the 'Conquest' of Inflation," CEPR Discussion Papers 3101, C.E.P.R. Discussion Papers.
    8. Kenneth Kasa, 2004. "Learning, Large Deviations, And Recurrent Currency Crises," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 45(1), pages 141-173, February.
    9. Thomas Sargent & Noah Williams & Tao Zha, 2009. "The Conquest of South American Inflation," Journal of Political Economy, University of Chicago Press, vol. 117(2), pages 211-256, April.
    10. Robert Tetlow & Peter von zur Muehlen, 2004. "Avoiding Nash Inflation: Bayesian and Robus Responses to Model Uncertainty," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 7(4), pages 869-899, October.
    11. William Poole & Robert H. Rasche, 2002. "Flation," Review, Federal Reserve Bank of St. Louis, issue Nov, pages 1-6.
      • William Poole, 2002. "Flation," Speech 49, Federal Reserve Bank of St. Louis.
    12. Cho, In-Koo & Kasa, Kenneth, 2008. "Learning Dynamics And Endogenous Currency Crises," Macroeconomic Dynamics, Cambridge University Press, vol. 12(02), pages 257-285, April.
    13. In-Koo Cho & Noah Williams & Thomas J. Sargent, 2002. "Escaping Nash Inflation," Review of Economic Studies, Oxford University Press, vol. 69(1), pages 1-40.
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    Cited by:

    1. Thomas Sargent & Noah Williams & Tao Zha, 2009. "The Conquest of South American Inflation," Journal of Political Economy, University of Chicago Press, vol. 117(2), pages 211-256, April.

    More about this item

    JEL classification:

    • E5 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit
    • F4 - International Economics - - Macroeconomic Aspects of International Trade and Finance

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