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Structural uncertainty and central bank conservatism: the ignorant should keep their eyes shut

  • Michael Spagat
  • Joao Mauricio Rosal

We study the problem of a central bank whose policy actions simultaneously affect the information flow about its expectations-augmented Phillips curve and its reputation for toughness in fighting inflation. In an environment with an unknown relationship between inflation surprises and output, big inflation surprises yield big short-term output gains and a strong information flow. Yet optimal policy is very conservative because inflation surprises yield information that increases the volatility of both future inflationary expectations and inflation itself. In fact, the more there is that can be learned about the Phillips curve the less does optimal policy aim towards learning.

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Paper provided by Money Macro and Finance Research Group in its series Money Macro and Finance (MMF) Research Group Conference 2003 with number 93.

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Date of creation: 27 Sep 2004
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Handle: RePEc:mmf:mmfc03:93
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  1. Honkapohja, Seppo & Mitra, Kaushik, 2002. "Performance of monetary policy with internal central bank forecasting," Research Discussion Papers 3/2002, Bank of Finland.
  2. 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.
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  8. Henrik Jensen, . "Optimal Degrees of Tranaparency in Monetary Policymaking," EPRU Working Paper Series 01-01, Economic Policy Research Unit (EPRU), University of Copenhagen. Department of Economics.
  9. Honkapohja, Seppo & Mitra, Kaushik, 2005. "Performance of monetary policy with internal central bank forecasting," Journal of Economic Dynamics and Control, Elsevier, vol. 29(4), pages 627-658, April.
  10. Bertocchi, Graziella & Spagat, Michael, 1993. "Learning, experimentation, and monetary policy," Journal of Monetary Economics, Elsevier, vol. 32(1), pages 169-183, August.
  11. Robert J. Barro, 1986. "Reputation in a Model of Monetary Policy with Incomplete Information," NBER Working Papers 1794, National Bureau of Economic Research, Inc.
  12. Ronald J. Balvers & Thomas F. Cosimano, 1994. "Inflation Variability and Gradualist Monetary Policy," Review of Economic Studies, Oxford University Press, vol. 61(4), pages 721-738.
  13. Prescott, Edward C, 1972. "The Multi-Period Control Problem Under Uncertainty," Econometrica, Econometric Society, vol. 40(6), pages 1043-58, November.
  14. Caplin, Andrew & Leahy, John, 1996. "Monetary Policy as a Process of Search," American Economic Review, American Economic Association, vol. 86(4), pages 689-702, September.
  15. Alan S. Blinder, 1999. "Central Banking in Theory and Practice," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262522608, June.
  16. Sanford J. Grossman & Richard E. Kihlstrom & Leonard J. Mirman, 1977. "A Bayesian Approach to the Production of Information and Learning By Doing," Review of Economic Studies, Oxford University Press, vol. 44(3), pages 533-547.
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