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Optimal Monetary Policy with a Convex Phillips Curve

This paper shows that convexity of the short-run Phillips curve is a source of positive inflation bias even when policymakers target the natural unemployment rate, that is when they operate with prudent discretion, and their loss function is symmetric. Optimal monetary policy also induces positive co-movement between average inflation, average unemployment and inflation variability–suggesting a new motive for inflation stabilization policy–and positively skewed unemployment distributions. The reduced form model is applied to the post-disinflation period (1986-2006) in developed countries and its properties are illustrated numerically for the United States.

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Paper provided by Faculty of Economics, University of Cambridge in its series Cambridge Working Papers in Economics with number 0859.

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Date of creation: Dec 2008
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Handle: RePEc:cam:camdae:0859
Contact details of provider: Web page: http://www.econ.cam.ac.uk/index.htm

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  1. Clarida, Richard & Galí, Jordi & Gertler, Mark, 1999. "The Science of Monetary Policy: A New Keynesian Perspective," CEPR Discussion Papers 2139, C.E.P.R. Discussion Papers.
  2. Alan S. Blinder, 1999. "Central Bank Credibility: Why Do We Care? How Do We Build It?," NBER Working Papers 7161, National Bureau of Economic Research, Inc.
  3. Barro, Robert J & Gordon, David B, 1983. "A Positive Theory of Monetary Policy in a Natural Rate Model," Journal of Political Economy, University of Chicago Press, vol. 91(4), pages 589-610, August.
  4. Stephen Nickell, 1997. "Unemployment and Labor Market Rigidities: Europe versus North America," Journal of Economic Perspectives, American Economic Association, vol. 11(3), pages 55-74, Summer.
  5. Shapiro, Carl & Stiglitz, Joseph E, 1984. "Equilibrium Unemployment as a Worker Discipline Device," American Economic Review, American Economic Association, vol. 74(3), pages 433-44, June.
  6. 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.
  7. Ruge-Murcia, F.J., 2001. "Inflation Targeting Under Asymmetric Preferences," Cahiers de recherche 2001-04, Centre interuniversitaire de recherche en économie quantitative, CIREQ.
  8. RUGE-MURCIA, Francisco J., 2002. "Does the Barro-Gordon Model Explain the Behavior of US Inflation? a Reexamination of the Empirical Evidence," Cahiers de recherche 2002-07, Universite de Montreal, Departement de sciences economiques.
  9. Stefania Albanesi & V. V. Chari & Lawrence J. Christiano, 2003. "How severe is the time-inconsistency problem in monetary policy?," Quarterly Review, Federal Reserve Bank of Minneapolis, issue Sum, pages 17-33.
  10. Michael Dotsey, 2006. "A review of inflation targeting in developed countries," Business Review, Federal Reserve Bank of Philadelphia, issue Q3, pages 10-20.
  11. Francisco J. Ruge-Murciá, 2002. "A Prudent Central Banker," IMF Staff Papers, Palgrave Macmillan, vol. 49(3), pages 7.
  12. DOLADO, J.J. & MARIA-DOLORES, R. & RUGE-MURCIA, Francisco J., 2003. "Nonlinear Monetary Policy Rules: Some New Evidence for the U.S," Cahiers de recherche 2003-24, Universite de Montreal, Departement de sciences economiques.
  13. Nobay, A. R. & Peel, D. A., 2000. "Optimal monetary policy with a nonlinear Phillips curve," Economics Letters, Elsevier, vol. 67(2), pages 159-164, May.
  14. Michael T. Kiley, 2007. "Is Moderate-to-High Inflation Inherently Unstable?," International Journal of Central Banking, International Journal of Central Banking, vol. 3(2), pages 173-201, June.
  15. Salop, Steven C, 1979. "A Model of the Natural Rate of Unemployment," American Economic Review, American Economic Association, vol. 69(1), pages 117-25, March.
  16. 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.
  17. RUGE-MURCIA, Francisco J., 2001. "The Inflation Bias When the Central Bank Targets, the Natural Rate of Unemployment," Cahiers de recherche 2001-22, Universite de Montreal, Departement de sciences economiques.
  18. van der Ploeg, Frederick, 2004. "Prudent Monetary Policy: Applications of Cautious LQG Control and Prediction," CEPR Discussion Papers 4222, C.E.P.R. Discussion Papers.
  19. Alex Cukierman & Stefan Gerlach, 2003. "The inflation bias revisited: theory and some international evidence," Manchester School, University of Manchester, vol. 71(5), pages 541-565, 09.
  20. Dolado, Juan J. & Maria-Dolores, Ramon & Naveira, Manuel, 2005. "Are monetary-policy reaction functions asymmetric?: The role of nonlinearity in the Phillips curve," European Economic Review, Elsevier, vol. 49(2), pages 485-503, February.
  21. Skalin, Joakim & Teräsvirta, Timo, 1998. "Modelling asymmetries and moving equilibria in unemployment rates," SSE/EFI Working Paper Series in Economics and Finance 262, Stockholm School of Economics, revised 05 Oct 1998.
  22. A. Robert Nobay & David A. Peel, 2003. "Optimal Discretionary Monetary Policy in a Model of Asymmetric Central Bank Preferences," Economic Journal, Royal Economic Society, vol. 113(489), pages 657-665, 07.
  23. Tambakis, Demosthenes N, 2002. "Expected Social Welfare under a Convex Philips Curve and Asymmetric Policy Preferences," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 34(2), pages 434-49, May.
  24. Isard, Peter & Laxton, Douglas & Eliasson, Ann-Charlotte, 2001. "Inflation targeting with NAIRU uncertainty and endogenous policy credibility," Journal of Economic Dynamics and Control, Elsevier, vol. 25(1-2), pages 115-148, January.
  25. Guy Debelle & Douglas Laxton, 1997. "Is the Phillips Curve Really a Curve? Some Evidence for Canada, the United Kingdom, and the United States," IMF Staff Papers, Palgrave Macmillan, vol. 44(2), pages 249-282, June.
  26. Carlsson Mikael & Westermark Andreas, 2008. "Monetary Policy under Downward Nominal Wage Rigidity," The B.E. Journal of Macroeconomics, De Gruyter, vol. 8(1), pages 1-61, October.
  27. Douglas Laxton & Peter B. Clark & David Rose, 1995. "Asymmetry in the U.S. Output-Inflation Nexus; Issues and Evidence," IMF Working Papers 95/76, International Monetary Fund.
  28. Tambakis Demosthenes N., 1999. "Monetary Policy with a Nonlinear Phillips Curve and Asymmetric Loss," Studies in Nonlinear Dynamics & Econometrics, De Gruyter, vol. 3(4), pages 1-17, January.
  29. Robert J. Gordon, 1996. "The Time-Varying NAIRU and its Implications for Economic Policy," NBER Working Papers 5735, National Bureau of Economic Research, Inc.
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