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The Overlooked Assumption Behind the New Keynesian Phillips Curve

  • Belanger, Gilles

The New Keynesian Phillips Curve rests on an assumption not mentioned in the literature. Specifically, firms that are price constrained align their production along the demand curve, ignoring the effects of marginal cost on supply. This paper investigates what happens when the relationship between marginal cost and pricing conforms instead to standard microeconomic theory. It shows that the New Keynesian Phillips Curve is invalid and prices are not procyclical, but acyclical in this case. Therefore, if the assumption in question is necessary to the model, it should be acknowledged for the sake of transparency.

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File URL: http://mpra.ub.uni-muenchen.de/55629/1/MPRA_paper_55629.pdf
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File URL: http://mpra.ub.uni-muenchen.de/57813/3/MPRA_paper_57813.pdf
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Paper provided by University Library of Munich, Germany in its series MPRA Paper with number 55629.

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Date of creation: 28 Apr 2014
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Handle: RePEc:pra:mprapa:55629
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  1. Gali, Jordi & Gertler, Mark, 1999. "Inflation dynamics: A structural econometric analysis," Journal of Monetary Economics, Elsevier, vol. 44(2), pages 195-222, October.
  2. Christopher A. Sims, 2012. "Statistical Modeling of Monetary Policy and Its Effects," American Economic Review, American Economic Association, vol. 102(4), pages 1187-1205, June.
  3. Roberts, John M, 1995. "New Keynesian Economics and the Phillips Curve," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 27(4), pages 975-84, November.
  4. Lawrence J. Christiano & Martin Eichenbaum & Charles Evans, 2001. "Nominal Rigidities and the Dynamic Effects of a Shock to Monetary Policy," NBER Working Papers 8403, National Bureau of Economic Research, Inc.
  5. Dixit, Avinash K & Stiglitz, Joseph E, 1975. "Monopolistic Competition and Optimum Product Diversity," The Warwick Economics Research Paper Series (TWERPS) 64, University of Warwick, Department of Economics.
  6. Lawless, Martina & Whelan, Karl T., 2011. "Understanding the dynamics of labor shares and inflation," Journal of Macroeconomics, Elsevier, vol. 33(2), pages 121-136, June.
  7. Michael Dotsey, 2013. "DSGE models and their use in monetary policy," Business Review, Federal Reserve Bank of Philadelphia, issue Q2, pages 10-16.
  8. Arturo Estrella & Jeffrey C. Fuhrer, 2002. "Dynamic Inconsistencies: Counterfactual Implications of a Class of Rational-Expectations Models," American Economic Review, American Economic Association, vol. 92(4), pages 1013-1028, September.
  9. Frank Smets & Raf Wouters, 2003. "An Estimated Dynamic Stochastic General Equilibrium Model of the Euro Area," Journal of the European Economic Association, MIT Press, vol. 1(5), pages 1123-1175, 09.
  10. Jeremy Rudd & Karl Whelan, 2005. "Modelling inflation dynamics: a critical review of recent research," Finance and Economics Discussion Series 2005-66, Board of Governors of the Federal Reserve System (U.S.).
  11. Yun, Tack, 1996. "Nominal price rigidity, money supply endogeneity, and business cycles," Journal of Monetary Economics, Elsevier, vol. 37(2-3), pages 345-370, April.
  12. Calvo, Guillermo A., 1983. "Staggered prices in a utility-maximizing framework," Journal of Monetary Economics, Elsevier, vol. 12(3), pages 383-398, September.
  13. Fuhrer, Jeffrey C, 1997. "The (Un)Importance of Forward-Looking Behavior in Price Specifications," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 29(3), pages 338-50, August.
  14. Rudd, Jeremy & Whelan, Karl, 2005. "Does Labor's Share Drive Inflation?," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 37(2), pages 297-312, April.
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