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Phillips curve instability and optimal monetary policy

Listed author(s):
  • Troy A. Davig

This paper assesses the implications for optimal discretionary monetary policy if the slope of the Phillips curve changes. The paper first derives a ‘switching’ Phillips curve from the optimal pricing decision of a monopolistic firm that faces a changing cost of price adjustment. Two states exists, a state with a high cost of price adjustment that generates a ‘flat’ Phillips curve and a low-cost state that generates a relatively ‘steep’ curve. The second aspect of the paper constructs a utility-based welfare criterion. A novel feature of this criterion is that it has a relative weight on output gap deviations that is state dependent, so it changes with the cost of price adjustment. Optimal monetary policy is computed subject to the switching-Phillips curve under both ad-hoc and utility-based welfare criteria. The utility-based criterion instructs monetary policy to disregard the slope of the Phillips curve and keep its systematic actions constant across different states. This stands in contrast to the prescription coming under the ad-hoc criterion, which advises monetary policy to change its systematic behavior according to the slope of the Phillips curve.

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File URL: http://www.kansascityfed.org/Publicat/Reswkpap/PDF/RWP07-04.pdf
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Paper provided by Federal Reserve Bank of Kansas City in its series Research Working Paper with number RWP 07-04.

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Date of creation: 2007
Handle: RePEc:fip:fedkrw:rwp07-04
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  1. Troy Davig & Eric M. Leeper & Hess Chung, 2004. "Monetary and Fiscal Policy Switching," NBER Working Papers 10362, National Bureau of Economic Research, Inc.
  2. Tim W. Cogley & Argia M. Sbordone, 2005. "A Search for a Structural Phillips Curve," Working Papers 510, University of California, Davis, Department of Economics.
  3. Dora M Iakova, 2007. "Flattening of the Phillips Curve; Implications for Monetary Policy," IMF Working Papers 07/76, International Monetary Fund.
  4. Richard Clarida & Jordi Galí & Mark Gertler, 1997. "The science of monetary policy: A new Keynesian perspective," Economics Working Papers 356, Department of Economics and Business, Universitat Pompeu Fabra, revised Apr 1999.
  5. Stefano Eusepi, 2005. "Central bank transparency under model uncertainty," Staff Reports 199, Federal Reserve Bank of New York.
  6. Taylor, John B, 1979. "Estimation and Control of a Macroeconomic Model with Rational Expectations," Econometrica, Econometric Society, vol. 47(5), pages 1267-1286, September.
  7. John M. Roberts, 2004. "Monetary policy and inflation dynamics," Finance and Economics Discussion Series 2004-62, Board of Governors of the Federal Reserve System (U.S.).
  8. Peter N. Ireland, 2004. "Technology Shocks in the New Keynesian Model," NBER Working Papers 10309, National Bureau of Economic Research, Inc.
  9. Svensson, Lars E. O. & Williams, Noah, 2005. "Monetary policy with model uncertainty: distribution forecast targeting," Discussion Paper Series 1: Economic Studies 2005,35, Deutsche Bundesbank, Research Centre.
  10. Andrew P Blake & Fabrizio Zampolli, 2006. "Optimal monetary policy in Markov-switching models with rational expectations agents," Bank of England working papers 298, Bank of England.
  11. Thomas A. Lubik & Frank Schorfheide, 2004. "Testing for Indeterminacy: An Application to U.S. Monetary Policy," American Economic Review, American Economic Association, vol. 94(1), pages 190-217, March.
  12. Jesús Fernández-Villaverde & Juan F. Rubio-Ramírez, 2007. "How Structural Are Structural Parameters?," NBER Working Papers 13166, National Bureau of Economic Research, Inc.
  13. Jordi Gali & Mark Gertler, 2000. "Inflation Dynamics: A Structural Econometric Analysis," NBER Working Papers 7551, National Bureau of Economic Research, Inc.
  14. David Andolfatto & Paul Gomme, 2003. "Monetary Policy Regimes and Beliefs," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 44(1), pages 1-30, February.
  15. Julio Rotemberg & Michael Woodford, 1997. "An Optimization-Based Econometric Framework for the Evaluation of Monetary Policy," NBER Chapters, in: NBER Macroeconomics Annual 1997, Volume 12, pages 297-361 National Bureau of Economic Research, Inc.
  16. Frederic S. Mishkin, 2007. "Inflation Dynamics," NBER Working Papers 13147, National Bureau of Economic Research, Inc.
  17. Boivin, Jean & Giannoni, Marc, 2006. "Has Monetary Policy Become More Effective?," CEPR Discussion Papers 5463, C.E.P.R. Discussion Papers.
  18. Troy Davig & Eric M. Leeper, 2005. "Fluctuating Macro Policies and the Fiscal Theory," NBER Working Papers 11212, National Bureau of Economic Research, Inc.
  19. Smets, Frank & Wouters, Rafael, 2007. "Shocks and Frictions in US Business Cycles: A Bayesian DSGE Approach," CEPR Discussion Papers 6112, C.E.P.R. Discussion Papers.
  20. Andrew Atkeson & Lee E. Ohanian, 2001. "Are Phillips curves useful for forecasting inflation?," Quarterly Review, Federal Reserve Bank of Minneapolis, issue Win, pages 2-11.
  21. Eric M. Leeper & Tao Zha, 2002. "Modest policy interventions," FRB Atlanta Working Paper 2002-19, Federal Reserve Bank of Atlanta.
  22. Ricardo J. Caballero & Eduardo M.R.A. Engel, 1992. "Microeconomic Rigidities and Aggregate Price Dynamics," NBER Working Papers 4162, National Bureau of Economic Research, Inc.
  23. Bennett T. McCallum, 1981. "On Non-Uniqueness in Rational Expectations Models: An Attempt at Perspective," NBER Working Papers 0684, National Bureau of Economic Research, Inc.
  24. Julio J. Rotemberg, 1982. "Monopolistic Price Adjustment and Aggregate Output," Review of Economic Studies, Oxford University Press, vol. 49(4), pages 517-531.
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