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Deep Habits in the New Keynesian Phillips Curve

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  • Thomas A. Lubik
  • Wing Leong Teo

Abstract

We derive and estimate a New Keynesian Phillips curve (NKPC) in a model where consumers are assumed to have deep habits. Habits are deep in the sense that they apply to individual consumption goods instead of aggregate consumption. This alters the NKPC in a fundamental manner as it introduces expected and contemporaneous consumption growth as well as the expected marginal value of future demand as additional driving forces for inflation dynamics. We construct the driving process in the deep habits NKPC by using the model's optimality conditions to impute time series for unobservable variables. The resulting series is considerably more volatile than unit labor cost. GMM estimation of the NKPC shows an improved fit and a much lower degree of indexation than in the standard NKPC. Our analysis also reveals that the crucial parameters for the performance of the deep habit NKPC are the habit parameter and the substitution elasticity between differentiated products. The results are broadly robust to alternative specfications.

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Bibliographic Info

Paper provided by University of Nottingham, Centre for Finance, Credit and Macroeconomics (CFCM) in its series Discussion Papers with number 11/13.

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Handle: RePEc:not:notcfc:11/13

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Keywords: Phillips curve; GMM; marginal costs; deep habits.;

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References

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  1. Michael U. Krause & David J. Lopez-Salido & Thomas Lubik, 2007. "Do Search Frictions Matter for Inflation Dynamics?," Kiel Working Papers 1353, Kiel Institute for the World Economy.
  2. Thomas A. Lubik & Wing Leong Teo, 2010. "Inventories, Inflation Dynamics and the New Keynesian Phillips Curve," CAMA Working Papers 2010-13, Centre for Applied Macroeconomic Analysis, Crawford School of Public Policy, The Australian National University.
  3. Morten O. Ravn & Stephanie Schmitt-Grohe, 2004. "Deep Habits," 2004 Meeting Papers 208, Society for Economic Dynamics.
  4. Morten O. Ravn & Stephanie Schmitt-Grohe & Martín Uribe & Lenno Uuskula, 2008. "Deep Habits and the Dynamic Effects of Monetary Policy Shocks," Economics Working Papers ECO2008/40, European University Institute.
  5. Thomas A. Lubik & Wing Leong Teo, 2010. "Inventories, Inflation Dynamics and the New Keynesian Phillips Curve," CAMA Working Papers 2010-13, Centre for Applied Macroeconomic Analysis, Crawford School of Public Policy, The Australian National University.
  6. James M. Nason & Gregor W. Smith, 2008. "The New Keynesian Phillips curve : lessons from single-equation econometric estimation," Economic Quarterly, Federal Reserve Bank of Richmond, issue Fall, pages 361-395.
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Cited by:
  1. Givens, Gregory, 2013. "Deep or aggregate habit formation? Evidence from a new-Keynesian business cycle model," MPRA Paper 45204, University Library of Munich, Germany.

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