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Testing for PPP in the Mean-Group Panel Regression Framework: Further Evidence

  • Noman, Abdullah

The paper investigates the validity of PPP by using 15 OECD countries data of monthly frequency from 1980:01 to 2005:12 and tests for the symmetry and proportionality hypotheses. The test for PPP is conducted in the framework of the General Relative PPP (RPPP) as proposed by Coakley et al. (2005) using the Mean-Group (MG) estimators of Pesaran and Smith (1995). We apply two variants of the MG estimators, namely MG and CMG, where the latter takes into account the problem of cross-sectional dependence (CSD). The symmetry null is unequivocally accepted for both estimators in CPI as well as PPI panels. The proportionality null, however, is rejected in the CPI panel with MG procedure but accepted with CMG. In the PPI panel, the MG estimate cannot reject the null while the CMG estimate marginally rejects it. Our findings are only partially supportive of the general RPPP.

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Paper provided by University Library of Munich, Germany in its series MPRA Paper with number 7825.

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Date of creation: 17 Mar 2008
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Handle: RePEc:pra:mprapa:7825
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  2. Jeffrey A. Frankel & Andrew K. Rose, 1995. "A Panel Project on Purchasing Power Parity: Mean Reversion Within and Between Countries," NBER Working Papers 5006, National Bureau of Economic Research, Inc.
  3. Drine, Imed & Rault, Christophe, 2007. "Purchasing Power Parity for Developing and Developed Countries: What Can We Learn from Non-Stationary Panel Data Models?," IZA Discussion Papers 2887, Institute for the Study of Labor (IZA).
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  6. Coakley, Jerry & Fuertes, Ana-Maria & Smith, Ron, 2006. "Unobserved heterogeneity in panel time series models," Computational Statistics & Data Analysis, Elsevier, vol. 50(9), pages 2361-2380, May.
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  8. Abuaf, Niso & Jorion, Philippe, 1990. " Purchasing Power Parity in the Long Run," Journal of Finance, American Finance Association, vol. 45(1), pages 157-74, March.
  9. Peter C. B. Phillips & Hyungsik R. Moon, 1999. "Linear Regression Limit Theory for Nonstationary Panel Data," Econometrica, Econometric Society, vol. 67(5), pages 1057-1112, September.
  10. Sarno, Lucio & Taylor, Mark P, 2001. "Purchasing Power Parity and the Real Exchange Rate," CEPR Discussion Papers 2913, C.E.P.R. Discussion Papers.
  11. Ron Smith & Ana-Maria Fuertes & Jerry Coakley, 2001. "Small Sample Properties of Panel Time-series Estimators with I(1) Errors," Working Papers wp01-08, Warwick Business School, Finance Group.
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  17. Kao, Chihwa, 1999. "Spurious regression and residual-based tests for cointegration in panel data," Journal of Econometrics, Elsevier, vol. 90(1), pages 1-44, May.
  18. Coakley, Jerry & Flood, Robert P. & Fuertes, Ana M. & Taylor, Mark P., 2005. "Purchasing power parity and the theory of general relativity: the first tests," Journal of International Money and Finance, Elsevier, vol. 24(2), pages 293-316, March.
  19. Jörg Breitung & Bertrand Candelon, 2005. "Purchasing Power Parity during Currency Crises: A Panel Unit Root Test under Structural Breaks," Review of World Economics (Weltwirtschaftliches Archiv), Springer, vol. 141(1), pages 124-140, April.
  20. Hakkio, Craig S., 1984. "A re-examination of purchasing power parity : A multi-country and multi-period study," Journal of International Economics, Elsevier, vol. 17(3-4), pages 265-277, November.
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  23. Li, Kai, 1999. "Testing Symmetry and Proportionality in PPP: A Panel-Data Approach," Journal of Business & Economic Statistics, American Statistical Association, vol. 17(4), pages 409-18, October.
  24. M Pesaran & Yongcheol Shin & Ron P Smith, 2004. "Pooled mean group estimation of dynamic heterogeneous panels," ESE Discussion Papers 16, Edinburgh School of Economics, University of Edinburgh.
  25. Robert P. Flood & Mark P. Taylor, 1996. "Exchange Rate Economics: What's Wrong with the Conventional Macro Approach?," NBER Chapters, in: The Microstructure of Foreign Exchange Markets, pages 261-302 National Bureau of Economic Research, Inc.
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