Identification of new Keynesian Phillips Curves from a global perspective

Stephane Dees, Mohammad Pesaran, Vanessa Smith and Ron P. Smith
Authors registered in the RePEc Author Service: Ronald Smith

No 892, Working Paper Series from European Central Bank

Abstract: New Keynesian Phillips Curves (NKPC) have been exten-sively used in the analysis of monetary policy, but yet there are a number of issues of concern about how they are estimated and then related to the underlying macro-economic theory. The first is whether such equations are identified. To check identification requires specifying the process for the forcing variables (typically the output gap) and solving the model for inflation in terms of the observables. In practice, the equation is estimated by GMM, relying on statistical criteria to choose instruments. This may result in failure of identification or weak instruments. Secondly, the NKPC is usually derived as a part of a DSGE model, solved by log-linearising around a steady state and the variables are then measured in terms of deviations from the steady state. In practice the steady states, e.g. for output, are usually estimated by some statistical procedure such as the Hodrick-Prescott (HP) filter that might not be appropriate. Thirdly, there are arguments that other variables, e.g. interest rates, foreign inflation and foreign output gaps should enter the Phillips curve. This paper examines these three issues and argues that all three benefit from a global perspective. The global per-spective provides additional instruments to alleviate the weak instrument problem, yields a theoretically consistent measure of the steady state and provides a natural route for foreign inflation or output gap to enter the NKPC. JEL Classification: C32, E17, F37, F42

Keywords: Global VAR (GVAR); identification; new Keynesian Phillips curve; Trend- (search for similar items in EconPapers)
Date: 2008-04
Note: 2544114
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (83)

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Related works:
Journal Article: Identification of New Keynesian Phillips Curves from a Global Perspective (2009)
Journal Article: Identification of New Keynesian Phillips Curves from a Global Perspective (2009)
Working Paper: Identification of New Keynesian Phillips Curves from a Global Perspective (2008)
Working Paper: Identification of New Keynesian Phillips Curves from a Global Perspective (2008)
Working Paper: Identification of New Keynesian Phillips Curves from a Global Perspective (2008)
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Persistent link: https://EconPapers.repec.org/RePEc:ecb:ecbwps:2008892

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