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Escaping Nash inflation

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Author Info
In-Koo Cho () (University of Illinois at Urbana-Champaign, 1206 South Sixth Street, Champaign, IL 61820, United States.)
Thomas J. Sargent () (New York University, Department of Economics, 269 Mercer Street, New York, NY 10003, United States.)

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Abstract

Mean dynamics govern convergence to rational expectations equilibria of self-referential systems under least squares learning. We highlight escape dynamics that propel away from a rational expectations equilibrium under fixed-gain recursive learning schemes. These learning schemes discount past observations. In a model with a unique self-confirming equilibrium, we show that the destination of the escape dynamics is an outcome associated with government discovery of too strong a version of the natural rate hypothesis. That destination is not sustainable as a self-confirming equilibrium but is visited recurrently. The escape route dynamics cause recurrent outcomes close to the Ramsey (commitment)inflation rate in a model with an adaptive government. JEL Classification: E3; E52; E58.

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Publisher Info
Paper provided by European Central Bank in its series Working Paper Series with number 23.

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Length: 56 pages
Date of creation: Jun 2000
Date of revision:
Handle: RePEc:ecb:ecbwps:20000023

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Related research
Keywords: Self-confirming equilibrium; mean dynamics; escape route; large deviation; natural rate of unemployment; adaptation; experimentation trap.;

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References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
  1. Cho, In-Koo & Matsui, Akihiko, 1995. "Induction and the Ramsey policy," Journal of Economic Dynamics and Control, Elsevier, vol. 19(5-7), pages 1113-1140. [Downloadable!] (restricted)
  2. Sargent, Thomas J, 1971. "A Note on the 'Accelerationist' Controversy," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 3(3), pages 721-25, August. [Downloadable!] (restricted)
  3. Ireland, Peter N., 1999. "Does the time-consistency problem explain the behavior of inflation in the United States?," Journal of Monetary Economics, Elsevier, vol. 44(2), pages 279-291, October. [Downloadable!] (restricted)
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  4. Stokey, Nancy L, 1989. "Reputation and Time Consistency," American Economic Review, American Economic Association, vol. 79(2), pages 134-39, May. [Downloadable!] (restricted)
  5. Evans, George W & Honkapohja, Seppo, 1998. "Economic Dynamics with Learning: New Stability Results," Review of Economic Studies, Blackwell Publishing, vol. 65(1), pages 23-44, January. [Downloadable!] (restricted)
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  6. Kandori, Michihiro & Mailath, George J & Rob, Rafael, 1993. "Learning, Mutation, and Long Run Equilibria in Games," Econometrica, Econometric Society, vol. 61(1), pages 29-56, January. [Downloadable!] (restricted)
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  7. King, Robert G. & Watson, Mark W., 1994. "The post-war U.S. phillips curve: a revisionist econometric history," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 41(1), pages 157-219, December. [Downloadable!] (restricted)
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  8. Jeffrey C. Fuhrer, 1995. "The Phillips curve is alive and well," New England Economic Review, Federal Reserve Bank of Boston, issue Mar, pages 41-56. [Downloadable!]
  9. Alan S. Blinder, 1999. "Central Banking in Theory and Practice," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262522608.
  10. McCallum, Bennett T, 1995. "Two Fallacies Concerning Central-Bank Independence," American Economic Review, American Economic Association, vol. 85(2), pages 207-11, May. [Downloadable!] (restricted)
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  11. Volker Wieland, 1996. "Learning by doing and the value of optimal experimentation," Finance and Economics Discussion Series 96-5, Board of Governors of the Federal Reserve System (U.S.). [Downloadable!]
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  12. Marcet, Albert & Sargent, Thomas J., 1989. "Convergence of least squares learning mechanisms in self-referential linear stochastic models," Journal of Economic Theory, Elsevier, vol. 48(2), pages 337-368, August. [Downloadable!] (restricted)
  13. Evans, George W. & Honkapohja, Seppo, 1999. "Learning dynamics," Handbook of Macroeconomics, in: J. B. Taylor & M. Woodford (ed.), Handbook of Macroeconomics, edition 1, volume 1, chapter 7, pages 449-542 Elsevier. [Downloadable!] (restricted)
  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. [Downloadable!] (restricted)
  15. Marcet, Albert & Nicolini, Juan Pablo, 1998. "Recurrent Hyperinflations and Learning," CEPR Discussion Papers 1875, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
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  16. White, Halbert, 1982. "Maximum Likelihood Estimation of Misspecified Models," Econometrica, Econometric Society, vol. 50(1), pages 1-25, January. [Downloadable!] (restricted)
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