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

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Author Info
Noman, Abdullah
Abstract

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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Related research
Keywords: Purchasing Power Parity Mean-Group Regression Symmetry and Proportionality OECD General Relative PPP

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Find related papers by JEL classification:
C23 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Models with Panel Data
F31 - International Economics - - International Finance - - - Foreign Exchange

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  1. Alan M. Taylor & Mark P. Taylor, 2004. "The Purchasing Power Parity Debate," Journal of Economic Perspectives, American Economic Association, vol. 18(4), pages 135-158, Fall. [Downloadable!] (restricted)
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  2. 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. [Downloadable!] (restricted)
  3. Coakley, Jerry & Fuertes, Ana Maria, 1997. "New panel unit root tests of PPP," Economics Letters, Elsevier, vol. 57(1), pages 17-22, November. [Downloadable!] (restricted)
  4. M. Hashem Pesaran, 2004. "Estimation and Inference in Large Heterogeneous Panels with a Multifactor Error Structure," CESifo Working Paper Series CESifo Working Paper No. , CESifo GmbH. [Downloadable!]
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  5. Pesaran, M. Hashem & Smith, Ron, 1995. "Estimating long-run relationships from dynamic heterogeneous panels," Journal of Econometrics, Elsevier, vol. 68(1), pages 79-113, July. [Downloadable!] (restricted)
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  6. 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. [Downloadable!] (restricted)
  7. Kenneth Rogoff, 1996. "The Purchasing Power Parity Puzzle," Journal of Economic Literature, American Economic Association, vol. 34(2), pages 647-668, June. [Downloadable!] (restricted)
  8. Coakley, Jerry & Kellard, Neil & Snaith, Stuart, 2005. "The PPP debate: Price matters!," Economics Letters, Elsevier, vol. 88(2), pages 209-213, August. [Downloadable!] (restricted)
  9. 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. [Downloadable!] (restricted)
  10. 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. [Downloadable!] (restricted)
  11. Pesaran, M. Hashem, 2004. "General Diagnostic Tests for Cross Section Dependence in Panels," IZA Discussion Papers 1240, Institute for the Study of Labor (IZA). [Downloadable!]
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  12. MacDonald, Ronald, 1996. "Panel unit root tests and real exchange rates," Economics Letters, Elsevier, vol. 50(1), pages 7-11, January. [Downloadable!] (restricted)
  13. Frankel, Jeffrey A. & Rose, Andrew K., 1996. "A panel project on purchasing power parity: Mean reversion within and between countries," Journal of International Economics, Elsevier, vol. 40(1-2), pages 209-224, February. [Downloadable!] (restricted)
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  14. Granger, C. W. J. & Newbold, P., 1974. "Spurious regressions in econometrics," Journal of Econometrics, Elsevier, vol. 2(2), pages 111-120, July. [Downloadable!] (restricted)
  15. Peter Pedroni, 2001. "Purchasing Power Parity Tests In Cointegrated Panels," The Review of Economics and Statistics, MIT Press, vol. 83(4), pages 727-731, November. [Downloadable!] (restricted)
  16. Imed Drine & Christophe Rault, 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). [Downloadable!]
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  17. 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. [Downloadable!] (restricted)
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