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The New Keynesian Phillips Curve and Lagged Inflation: A Case of Spurious Correlation?


  • George Hondroyiannis

    (Bank of Greece, Economic Research Department and Harokopio University)

  • P.A.V.B. Swamy

    (US Bureau of Labour Statistics)

  • George S. Tavlas

    () (Bank of Greece, Economic Research Department)


The New Keynesian Phillips Curve (NKPC) specifies a relationship between inflation and a forcing variable and the current period’s expectation of future inflation. Most empirical estimates of the NKPC, typically based on Generalized Method of Moments (GMM) estimation, have found a significant role for lagged inflation, producing a “hybrid” NKPC. Using U.S. quarterly data, this paper examines whether the role of lagged inflation in the NKPC might be due to the spurious outcome of specification biases. Like previous investigators, we employ GMM estimation and, like those investigators, we find a significant effect for lagged inflation. We also use time varying coefficient (TVC) estimation, a procedure that allows us to directly confront specification biases and spurious relationships. Using three separate measures of expected inflation, we find strong support for the view that, under TVC estimation, the coefficient on expected inflation is near unity and that the role of lagged inflation in the NKPC is spurious.

Suggested Citation

  • George Hondroyiannis & P.A.V.B. Swamy & George S. Tavlas, 2007. "The New Keynesian Phillips Curve and Lagged Inflation: A Case of Spurious Correlation?," Working Papers 57, Bank of Greece.
  • Handle: RePEc:bog:wpaper:57

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    References listed on IDEAS

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    Cited by:

    1. repec:rjr:romjef:v::y:2017:i:3:p:54-76 is not listed on IDEAS
    2. Borek Vašícek, 2011. "Inflation Dynamics and the New Keynesian Phillips Curve in Four Central European Countries," Emerging Markets Finance and Trade, Taylor & Francis Journals, vol. 47(5), pages 71-100, September.
    3. Orland, Andreas & Roos, Michael W.M., 2013. "The New Keynesian Phillips curve with myopic agents," Journal of Economic Dynamics and Control, Elsevier, vol. 37(11), pages 2270-2286.
    4. Phiri, Andrew, 2015. "Examining asymmetric effects in the South African Philips curve: Evidence from logistic smooth transition regression (LSTR) models," MPRA Paper 64487, University Library of Munich, Germany.
    5. Borek Vašícek, 2011. "Inflation Dynamics and the New Keynesian Phillips Curve in Four Central European Countries," Emerging Markets Finance and Trade, M.E. Sharpe, Inc., vol. 47(5), pages 71-100, September.
    6. Katarína Danišková & Jarko Fidrmuc, 2011. "Inflation Convergence and the New Keynesian Phillips Curve in the Czech Republic," Czech Economic Review, Charles University Prague, Faculty of Social Sciences, Institute of Economic Studies, vol. 5(2), pages 099-115, August.
    7. Daniela Milučká, 2014. "Inflation dynamics in the Czech Republic: Estimation of the New Keynesian Phillips curve," International Journal of Economic Sciences, University of Economics, Prague, vol. 2014(2), pages 53-70.
    8. Stephen G. Hall & P. A. V. B. Swamy & George S. Tavlas, 2012. "Milton Friedman, the demand for money, and the ECB’s monetary policy strategy," Review, Federal Reserve Bank of St. Louis, issue May, pages 153-186.
    9. 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.
    10. Hall, Stephen G. & Swamy, P. A. V. B. & Tavlas, George S., 2017. "Time-Varying Coefficient Models: A Proposal For Selecting The Coefficient Driver Sets," Macroeconomic Dynamics, Cambridge University Press, vol. 21(05), pages 1158-1174, July.
    11. Dong Jin Lee & Jai Hyung Yoon, 2012. "The New Keynesian Phillips Curves in Multiple Quantiles and the Asymmetry of Monetary Policy," Working papers 2012-03, University of Connecticut, Department of Economics.
    12. Gomes, Orlando, 2012. "Thought experimentation and the Phillips curve," Research in Economics, Elsevier, vol. 66(1), pages 45-64.
    13. Lee, Dong Jin & Yoon, Jai Hyung, 2016. "The New Keynesian Phillips Curve in multiple quantiles and the asymmetry of monetary policy," Economic Modelling, Elsevier, vol. 55(C), pages 102-114.
    14. Borek Vašícek, 2011. "Inflation Dynamics and the New Keynesian Phillips Curve in Four Central European Countries," Emerging Markets Finance and Trade, Taylor & Francis Journals, vol. 47(5), pages 71-100, September.
    15. Kavtaradze, Lasha, 2014. "Inflation Dynamics in Georgia," MPRA Paper 59966, University Library of Munich, Germany.
    16. Alexander Apostolides, 2008. "How Similar to South-Eastern Europe were the Islands of Cyprus and Malta in terms of Agricultural Output and Credit? Evidence during the Interwar Period," Working Papers 80, Bank of Greece.
    17. Zarko Lazarevic, 2008. "Banking Performance in South-Eastern Europe During the Interwar Period," Working Papers 79, Bank of Greece.
    18. Stephen Hall & George Hondroyiannis & P. Swamy & George Tavlas, 2010. "The Fisher Effect Puzzle: A Case of Non-Linear Relationship?," Open Economies Review, Springer, vol. 21(1), pages 91-103, February.
    19. P. Swamy & Stephen Hall, 2012. "Measurement of causal effects," Economic Change and Restructuring, Springer, vol. 45(1), pages 3-23, February.
    20. Hall, Stephen G. & Kenjegaliev, Amangeldi & Swamy, P.A.V.B. & Tavlas, George S., 2013. "Measuring currency pressures: The cases of the Japanese yen, the Chinese yuan, and the UK pound," Journal of the Japanese and International Economies, Elsevier, vol. 29(C), pages 1-20.
    21. Baxa, Jaromír & Plašil, Miroslav & Vašíček, Bořek, 2015. "Changes in inflation dynamics under inflation targeting? Evidence from Central European countries," Economic Modelling, Elsevier, vol. 44(C), pages 116-130.
    22. Roumen Avramov & Dragana Gnjatovic, 2008. "Stabilization Policies in Bulgaria and Yugoslavia During Communism's Terminal Years : 1980s Economic Visions in Retrospect," Working Papers 81, Bank of Greece.
    23. Wolfgang Pollan, 2013. "US Inflation and Crude Oil Prices. An International Perspective," WIFO Working Papers 451, WIFO.

    More about this item


    New Keynesian Phillips curve; time-varying coefficients; spurious relationships.;

    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

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