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The New Keynesian Phillips Curve and Inflation Expectations: Re-Specification and Interpretation

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  • P. Swamy
  • George Tavlas

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Abstract

A theoretical analysis of the new Keynesian Phillips curve (NKPC) is provided, formulating the conditions under which the NKPC coincides with a real-world relation that is not spurious or misspecified. A time-varying-coefficient (TVC) model, involving only observed variables, is shown to exactly represent the underlying “true” NKPC under certain conditions. In contrast, “hybrid” NKPC models, which add lagged-inflation and supply-shock variables, are shown to be spurious and misspecified. We also show how to empirically implement the NKPC under the assumption that expectations are formed rationally.
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Suggested Citation

  • P. Swamy & George Tavlas, 2007. "The New Keynesian Phillips Curve and Inflation Expectations: Re-Specification and Interpretation," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 31(2), pages 293-306, May.
  • Handle: RePEc:spr:joecth:v:31:y:2007:i:2:p:293-306
    DOI: 10.1007/s00199-006-0100-z
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    References listed on IDEAS

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    7. Swamy, P.A.V.B. & Tavlas, George S., 2006. "A Note On Muth'S Rational Expectations Hypothesis: A Time-Varying Coefficient Interpretation," Macroeconomic Dynamics, Cambridge University Press, vol. 10(03), pages 415-425, June.
    8. Zellner, Arnold, 1979. "Causality and econometrics," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 10(1), pages 9-54, January.
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    10. Douglas O. Staiger & James H. Stock & Mark W. Watson, 1997. "How Precise Are Estimates of the Natural Rate of Unemployment?," NBER Chapters,in: Reducing Inflation: Motivation and Strategy, pages 195-246 National Bureau of Economic Research, Inc.
    11. Robert J. Gordon, 1998. "Foundations of the Goldilocks Economy: Supply Shocks and the Time-Varying NAIRU," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 29(2), pages 297-346.
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    13. Lucas, Robert Jr, 1976. "Econometric policy evaluation: A critique," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 1(1), pages 19-46, January.
    14. I-Lok Chang & P.A.V.B. Swamy & Charles Hallahan & George S. Tavlas, 2000. "A Computational Approach to Finding Causal Economic Laws," Computational Economics, Springer;Society for Computational Economics, vol. 16(1/2), pages 105-136, October.
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    Cited by:

    1. Stephen G Hall & George Hondroyiannis & P.A.V.B. Swamy & George S. Tavlas, 2008. "A Portfolio Balance Approach to Euro-Area Money Demand in a Time-Varying Environment," Discussion Papers in Economics 08/9, Department of Economics, University of Leicester.
    2. George Hondroyiannis & P.A.V.B. Swamy & George Tavlas & Michael Ulan, 2008. "Some Further Evidence on Exchange-Rate Volatility and Exports," Review of World Economics (Weltwirtschaftliches Archiv), Springer;Institut für Weltwirtschaft (Kiel Institute for the World Economy), vol. 144(1), pages 151-180, April.
    3. Tavlas, George & Dellas, Harris & Stockman, Alan C., 2008. "The classification and performance of alternative exchange-rate systems," European Economic Review, Elsevier, vol. 52(6), pages 941-963, August.
    4. Joseph Aschheim & George S. Tavlas, 2006. "Money as mumeraire: doctrinal aspects and contemporary relevance," Banca Nazionale del Lavoro Quarterly Review, Banca Nazionale del Lavoro, vol. 59(239), pages 333-361.
    5. Hondroyiannis, George & Swamy, P.A.V.B. & Tavlas, George S., 2008. "Inflation dynamics in the euro area and in new EU members: Implications for monetary policy," Economic Modelling, Elsevier, vol. 25(6), pages 1116-1127, November.
    6. George S. Tavlas, 2009. "The Benefits And Costs Of Monetary Union In Southern Africa: A Critical Survey Of The Literature," Journal of Economic Surveys, Wiley Blackwell, vol. 23(1), pages 1-43, February.
    7. Stephen Hall & P. Swamy & George Tavlas, 2012. "Generalized cointegration: a new concept with an application to health expenditure and health outcomes," Empirical Economics, Springer, vol. 42(2), pages 603-618, April.
    8. repec:cml:moneta:v:iii:y:2015:i:1:p:25-69 is not listed on IDEAS
    9. Joseph Aschheim & George S. Tavlas, 2006. "Money as mumeraire: doctrinal aspects and contemporary relevance," BNL Quarterly Review, Banca Nazionale del Lavoro, vol. 59(239), pages 333-361.
    10. Hall, Stephen G. & Hondroyiannis, George & Swamy, P.A.V.B. & Tavlas, George S., 2009. "Assessing the causal relationship between euro-area money and prices in a time-varying environment," Economic Modelling, Elsevier, vol. 26(4), pages 760-766, July.
    11. Stephen G.Hall & George Hondroyiannis & P.A.V.B. Swamy & George S. Tavlas, 2007. "A Portofolio Balance Approach to Euro-Area Money Demand in a Time-Varying Environment," Working Papers 61, Bank of Greece.
    12. Carlos A. Medel, 2015. "Inflation Dynamics and the Hybrid New Keynesian Phillips Curve: The Case of Chile," Monetaria, Centro de Estudios Monetarios Latinoamericanos, vol. 0(1), pages 25-69, january-j.
    13. Hall, Stephen & Hondroyiannis, George & Swamy, P.A.V.B. & Tavlas, George & Ulan, Michael, 2010. "Exchange-rate volatility and export performance: Do emerging market economies resemble industrial countries or other developing countries?," Economic Modelling, Elsevier, vol. 27(6), pages 1514-1521, November.
    14. Hall, Stephen G. & Hondroyiannis, George & Kenjegaliev, Amangeldi & Swamy, P.A.V.B. & Tavlas, George S., 2013. "Is the relationship between prices and exchange rates homogeneous?," Journal of International Money and Finance, Elsevier, vol. 37(C), pages 411-438.
    15. Hondroyiannis, George & Swamy, P.A.V.B. & Tavlas, George S., 2009. "The New Keynesian Phillips Curve In A Time-Varying Coefficient Environment: Some European Evidence," Macroeconomic Dynamics, Cambridge University Press, vol. 13(02), pages 149-166, April.
    16. George Hondroyiannis & P.A.V.B. Swamy & George Tavlas & Michael Ulan, 2008. "Some Further Evidence on Exchange-Rate Volatility and Exports," Review of World Economics (Weltwirtschaftliches Archiv), Springer;Institut für Weltwirtschaft (Kiel Institute for the World Economy), vol. 144(1), pages 151-180, April.
    17. P.A.V.B. Swamy & George S. Tavlas & Stephen G. Hall, 2015. "On the Interpretation of Instrumental Variables in the Presence of Specification Errors," Econometrics, MDPI, Open Access Journal, vol. 3(1), pages 1-10, January.

    More about this item

    Keywords

    Time-varying-coefficient model; Inflation-unemployment trade-off; “Objective” probability; Spurious correlation; Rational expectation; Coefficient driver; C51; E31; E42; E50;

    JEL classification:

    • C51 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Construction and Estimation
    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation
    • E42 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Monetary Sytsems; Standards; Regimes; Government and the Monetary System
    • E50 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - General

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