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Managing Disinflation under Uncertainty

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  • Mewael F. Tesfaselassie
  • Eric Schaling

Abstract

In this paper we analyze disinflation policy when a central bank has imperfect information about private sector inflation expectations but learns about them from economic outcomes, which are in part the result of the disinflation policy. The form of uncertainty is manifested as uncertainty about the effect of past disinflation policy on current output gap. Thus current as well as past policy actions matter for output gap determination. We derive the optimal policy under learning (DOP) and compare it two limiting cases---certainty equivalence policy (CEP) and cautionary policy (CP). It turns out that under the DOP inflation stay between the levels implied by the CEP and the CP. A novel result is that this holds irrespective of the initial level of inflation. Moreover, while at high levels of inherited inflation the DOP moves closer to the CEP, at low levels of inherited inflation the DOP resembles the CP

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File URL: https://www.ifw-members.ifw-kiel.de/publications/managing-disinflation-under-uncertainty-2/learninganddisinflation_KWPJune2008.pdf
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Bibliographic Info

Paper provided by Kiel Institute for the World Economy in its series Kiel Working Papers with number 1429.

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Length: 22 pages
Date of creation: Jun 2008
Date of revision:
Handle: RePEc:kie:kieliw:1429

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Keywords: Learning; Inflation Expectations; Disinflation Policy; Separation Principle; Kalman Filter; Optimal Control;

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References

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  1. 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.).
  2. Balvers, Ronald J & Cosimano, Thomas F, 1994. "Inflation Variability and Gradualist Monetary Policy," Review of Economic Studies, Wiley Blackwell, vol. 61(4), pages 721-38, October.
  3. Yetman, James, 2000. "Probing Potential Output: Monetary Policy, Credibility, and Optimal Learning under Uncertainty," Working Papers 00-10, Bank of Canada.
  4. Martin Ellison & Natacha Valla, 2000. "Learning, Uncertainty And Central Bank Activism In An Economy With Strategic Interactions," Computing in Economics and Finance 2000 183, Society for Computational Economics.
  5. Marcet, Albert & Sargent, Thomas J, 1988. "The Fate of Systems with "Adaptive" Expectations," American Economic Review, American Economic Association, vol. 78(2), pages 168-72, May.
  6. Kiefer, Nicholas M & Nyarko, Yaw, 1989. "Optimal Control of an Unknown Linear Process with Learning," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 30(3), pages 571-86, August.
  7. Volker Wieland, 1999. "Monetary policy, parameter uncertainty and optimal learning," Finance and Economics Discussion Series 1999-48, Board of Governors of the Federal Reserve System (U.S.).
  8. Beck, Gunter W. & Wieland, Volker, 2002. "Learning and control in a changing economic environment," Journal of Economic Dynamics and Control, Elsevier, vol. 26(9-10), pages 1359-1377, August.
  9. Eric Schaling, 2004. "Learning, inflation expectations and optimal monetary policy," Macroeconomics 0404035, EconWPA.
  10. Bertocchi, Graziella & Spagat, Michael, 1993. "Learning, experimentation, and monetary policy," Journal of Monetary Economics, Elsevier, vol. 32(1), pages 169-183, August.
  11. Lars E.O. Svensson & Noah M. Williams, 2007. "Bayesian and Adaptive Optimal Policy under Model Uncertainty," NBER Working Papers 13414, National Bureau of Economic Research, Inc.
  12. Tesfaselassie, M.F. & Schaling, E. & Eijffinger, S.C.W., 2006. "Learning about the Term Structure and Optimal Rules for Inflation Targeting," Discussion Paper 2006-88, Tilburg University, Center for Economic Research.
  13. Easley, David & Kiefer, Nicholas M, 1988. "Controlling a Stochastic Process with Unknown Parameters," Econometrica, Econometric Society, vol. 56(5), pages 1045-64, September.
  14. Eric Schaling & Marco Hoeberichts, 2010. "Why Speed Doesn’t Kill: Learning to Believe in Disinflation," De Economist, Springer, vol. 158(1), pages 23-42, April.
  15. Antulio N. Bomfim & Glenn D. Rudebusch, 1998. "Opportunistic and deliberate disinflation under imperfect credibility," Finance and Economics Discussion Series 1998-01, Board of Governors of the Federal Reserve System (U.S.).
  16. Ellison, Martin, 2003. "The Learning Cost of Interest Rate Reversals," CEPR Discussion Papers 4135, C.E.P.R. Discussion Papers.
  17. Timothy Cogley & Riccardo Colacito & Thomas J. Sargent, 2007. "Benefits from U.S. Monetary Policy Experimentation in the Days of Samuelson and Solow and Lucas," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 39(s1), pages 67-99, 02.
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Cited by:
  1. Matthias Neuenkirch & Peter Tillmann, 2012. "Inflation Targeting, Credibility, and Non-Linear Taylor Rules," MAGKS Papers on Economics 201235, Philipps-Universität Marburg, Faculty of Business Administration and Economics, Department of Economics (Volkswirtschaftliche Abteilung).
  2. Mewael F. Tesfaselassie, 2008. "Central Bank Learning and Monetary Policy," Kiel Working Papers 1444, Kiel Institute for the World Economy.

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