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Adaptive learning and multiple equilibria in a natural rate monetary model with unemployment persistence

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  • Rantala, Anssi

    (Bank of Finland Research)

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    Abstract

    This paper demonstrates that the adaptive learning approach to modelling private sector expectations can be used as an equilibrium selection mechanism in a natural-rate monetary model with unemployment persistence. In particular, it is shown that only one of the two rational expectations equilibria is stable under least-squares learning, and that it is always the low-inflation equilibrium with intuitive comparative statics properties that is the learnable equilibrium. Hence, this paper provides a basic theoretical justification for focusing on the low-inflation equilibrium. Earlier contributions, in which the high-inflation equilibrium was ignored, mainly because of its unpleasant characteristics, are not theoretically satisfactory.

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    File URL: http://www.suomenpankki.fi/en/julkaisut/tutkimukset/keskustelualoitteet/Documents/0330.pdf
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    Bibliographic Info

    Paper provided by Bank of Finland in its series Research Discussion Papers with number 30/2003.

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    Length: 30 pages
    Date of creation: 12 Nov 2003
    Date of revision:
    Handle: RePEc:hhs:bofrdp:2003_030

    Contact details of provider:
    Postal: Bank of Finland, P.O. Box 160, FI-00101 Helsinki, Finland
    Web page: http://www.suomenpankki.fi/en/
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    Related research

    Keywords: adaptive learning; monetary policy; multiple equilibria; persistence;

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    References

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    1. George W. Evans & Seppo Honkapohja, 2003. "Adaptive learning and monetary policy design," Proceedings, Federal Reserve Bank of Cleveland, pages 1045-1084.
    2. Athanasios Orphanides & John C. Williams, 2002. "Imperfect knowledge, inflation expectations, and monetary policy," Finance and Economics Discussion Series 2002-27, Board of Governors of the Federal Reserve System (U.S.).
    3. Lockwood, Ben & Miller, Marcus & Zhang, Lei, 1998. "Designing Monetary Policy When Unemployment Persists," Economica, London School of Economics and Political Science, vol. 65(259), pages 327-45, August.
    4. William Poole, 2002. "Flation," Speech 49, Federal Reserve Bank of St. Louis.
    5. Henrik Jensen & Roel M. W. J. Beetsma, 1999. "Optimal Inflation Targets, "Conservative" Central Banks, and Linear Inflation Contracts: Comment," American Economic Review, American Economic Association, vol. 89(1), pages 342-347, March.
    6. Layard, Richard & Nickell, Stephen & Jackman, Richard, 2005. "Unemployment: Macroeconomic Performance and the Labour Market," OUP Catalogue, Oxford University Press, number 9780199279173, September.
    7. George W. Evans & Seppo Honkapohja, 2001. "Expectations and the Stability Problem for Optimal Monetary Policies," University of Oregon Economics Department Working Papers 2001-6, University of Oregon Economics Department, revised 03 Aug 2001.
    8. Honkapohja, Seppo & Mitra, Kaushik, 2002. "Performance of monetary policy with internal central bank forecasting," Research Discussion Papers 3/2002, Bank of Finland.
    9. Cho, In-Koo & Williams, Noah & Sargent, Thomas J, 2002. "Escaping Nash Inflation," Review of Economic Studies, Wiley Blackwell, vol. 69(1), pages 1-40, January.
    10. Robert J. Barro & David B. Gordon, 1981. "A Positive Theory of Monetary Policy in a Natural-Rate Model," NBER Working Papers 0807, National Bureau of Economic Research, Inc.
    11. Lockwood, Ben & Philippopoulos, Apostolis, 1994. "Insider Power, Unemployment Dynamics and Multiple Inflation Equilibria," Economica, London School of Economics and Political Science, vol. 61(241), pages 59-77, February.
    12. Olivier J. Blanchard & Lawrence H. Summers, 1986. "Hysteresis And The European Unemployment Problem," NBER Chapters, in: NBER Macroeconomics Annual 1986, Volume 1, pages 15-90 National Bureau of Economic Research, Inc.
    13. Svensson, Lars E O, 1999. "Price-Level Targeting versus Inflation Targeting: A Free Lunch?," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 31(3), pages 277-95, August.
    14. Kydland, Finn E & Prescott, Edward C, 1977. "Rules Rather Than Discretion: The Inconsistency of Optimal Plans," Journal of Political Economy, University of Chicago Press, vol. 85(3), pages 473-91, June.
    15. Lindbeck, Assar & Snower, Dennis J, 1986. "Wage Setting, Unemployment, and Insider-Outsider Relations," American Economic Review, American Economic Association, vol. 76(2), pages 235-39, May.
    16. Jensen, Henrik, 1999. "Monetary policy cooperation and multiple equilibria," Journal of Economic Dynamics and Control, Elsevier, vol. 23(8), pages 1133-1153, August.
    17. Lockwood, Ben, 1997. "State-Contingent Inflation Contracts and Unemployment Persistence," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 29(3), pages 286-99, August.
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    Cited by:
    1. Anssi Rantala, 2004. "Labour market flexibility and policy coordination in a monetary union," Macroeconomics 0405001, EconWPA.
    2. Rantala, Anssi, 2003. "Labour market flexibility and policy coordination in a monetary union," Research Discussion Papers 11/2003, Bank of Finland.

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