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Euro Area Inflation Differentials: Unit Roots, Structural Breaks and Non-Linear Adjustment

  • Alberto Montagnoli
  • Andros Gregoriou
  • Alexandros Kontonikas

This paper examines the time series properties of inflation differentials in twelve EMU countries. We compute three alternative measures of inflation differentials using deviations from the policy reference value implied by the Maastricht Treaty, the ECB target, and deviations from the EMU average inflation. The evidence from standard linear unit root tests indicate that inflation differentials are highly persistent. However, when we account for endogenously determined structural breaks, we obtain greater support for stationarity. In addition, when we allow for the possibility that inflation differentials can be charterised by a non-linear mean reverting process we find evidence of stationarity. Our empirical results suggest that once we allow for structural breaks or non-linearities, inflation differentials do not consistently intensify real divergence in the euro area

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Paper provided by Business School - Economics, University of Glasgow in its series Working Papers with number 2007_13.

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Date of creation: Jun 2007
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Handle: RePEc:gla:glaewp:2007_13
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  1. Fabio Busetti & Lorenzo Forni & Andrew Harvey & Fabrizio Venditti, 2007. "Inflation Convergence and Divergence within the European Monetary Union," International Journal of Central Banking, International Journal of Central Banking, vol. 3(2), pages 95-121, June.
  2. Ignazio Angeloni & Luc Aucremanne & Matteo Ciccarelli, 2006. "Price setting and inflation persistence: did EMU matter?," Economic Policy, CEPR;CES;MSH, vol. 21(46), pages 353-387, 04.
  3. Angeloni, Ignazio & Ehrmann, Michael, 2004. "Euro area inflation differentials," Working Paper Series 0388, European Central Bank.
  4. Philip R. Lane, & Patrick Honohan, 2003. "Divergent Inflation Rates in EMU," The Institute for International Integration Studies Discussion Paper Series iiisdp05, IIIS.
  5. Andros Gregoriou & Alexandros Kontonikas, 2006. "Inflation Targeting And The Stationarity Of Inflation: New Results From An Estar Unit Root Test," Bulletin of Economic Research, Wiley Blackwell, vol. 58(4), pages 309-322, October.
  6. Ronald MacDonald & Cezary Wójcik, 2006. "Catching-up, Inflation Differentials and Credit Booms in a Heterogeneous Monetary Union: Some Implications for EMU and new EU Member States," CESifo Working Paper Series 1761, CESifo Group Munich.
  7. Junsoo Lee & Mark C. Strazicich, 2003. "Minimum Lagrange Multiplier Unit Root Test with Two Structural Breaks," The Review of Economics and Statistics, MIT Press, vol. 85(4), pages 1082-1089, November.
  8. Kwiatkowski, Denis & Phillips, Peter C. B. & Schmidt, Peter & Shin, Yongcheol, 1992. "Testing the null hypothesis of stationarity against the alternative of a unit root : How sure are we that economic time series have a unit root?," Journal of Econometrics, Elsevier, vol. 54(1-3), pages 159-178.
  9. Serena Ng & Pierre Perron, 1997. "Lag Length Selection and the Construction of Unit Root Tests with Good Size and Power," Boston College Working Papers in Economics 369, Boston College Department of Economics, revised 01 Sep 2000.
  10. Francesco Giavazzi & Alberto Giovannini, 1989. "Can the EMS be Exported? Lessons from Ten Years of Monetary Policy Coordination in Europe," Working Papers 68, Dipartimento Scienze Economiche, Universita' di Bologna.
  11. Perron, P., 1990. "Further Evidence On Breaking Trend Functions In Macroeconomics Variables," Papers 350, Princeton, Department of Economics - Econometric Research Program.
  12. Kocenda, Evzen & Papell, David H, 1997. "Inflation Convergence within the European Union: A Panel Data Analysis," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 2(3), pages 189-98, July.
  13. Robin L. Lumsdaine & David H. Papell, 1997. "Multiple Trend Breaks And The Unit-Root Hypothesis," The Review of Economics and Statistics, MIT Press, vol. 79(2), pages 212-218, May.
  14. Siklos, Pierre L & Wohar, Mark E, 1997. "Convergence in Interest Rates and Inflation Rates across Countries and over Time," Review of International Economics, Wiley Blackwell, vol. 5(1), pages 129-41, February.
  15. Peter C.B. Phillips, 1985. "Time Series Regression with a Unit Root," Cowles Foundation Discussion Papers 740R, Cowles Foundation for Research in Economics, Yale University, revised Feb 1986.
  16. Benigno, Pierpaolo, 2004. "Optimal monetary policy in a currency area," Journal of International Economics, Elsevier, vol. 63(2), pages 293-320, July.
  17. Kapetanios, George & Shin, Yongcheol & Snell, Andy, 2003. "Testing for a unit root in the nonlinear STAR framework," Journal of Econometrics, Elsevier, vol. 112(2), pages 359-379, February.
  18. Margarida Duarte, 2003. "The euro and inflation divergence in Europe," Economic Quarterly, Federal Reserve Bank of Richmond, issue Sum, pages 53-70.
  19. John H. Rogers, 2002. "Monetary union, price level convergence, and inflation: how close is Europe to the United States?," International Finance Discussion Papers 740, Board of Governors of the Federal Reserve System (U.S.).
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