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Evidence of Purchasing Power Parity for the Floating Regime Period

  • Claude Lopez


This paper investigates the PPP hypothesis within industrialized countries for the post-Bretton Woods period via two panel unit root tests, the DF-GLS-SUR and the ADF-SUR tests, respectively developed by Lopez (2003) and Levin, Lin and Chu (2002). Both approaches allow for data specific serial and contemporaneous correlation. The results lead to two major conclusions. First, by comparing the two test outcomes, we show the importance of the test power on PPP evidence. Then focusing on the results obtained via the DF-GLS-SUR test, we provide reliably strong evidence of PPP for the floating regime period.

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Paper provided by University of Cincinnati, Department of Economics in its series University of Cincinnati, Economics Working Papers Series with number 2004-01.

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Length: 16 pages
Date of creation: May 2004
Date of revision: Mar 2006
Handle: RePEc:cin:ucecwp:2004-01
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  1. 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.
  2. Im, Kyung So & Pesaran, M. Hashem & Shin, Yongcheol, 2003. "Testing for unit roots in heterogeneous panels," Journal of Econometrics, Elsevier, vol. 115(1), pages 53-74, July.
  3. Claude Lopez, 2003. "An Improved Panel Unit Root Test Using GLS-Detrending," University of Cincinnati, Economics Working Papers Series 2003-06, University of Cincinnati, Department of Economics.
  4. Claude Lopez & David H. Papell, 2003. "Convergence to Purchasing Power Parity at the Commencement of the Euro," University of Cincinnati, Economics Working Papers Series 2003-08, University of Cincinnati, Department of Economics.
  5. Hegwood, Natalie D & Papell, David H, 1998. "Quasi Purchasing Power Parity," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 3(4), pages 279-89, October.
  6. Papell, David H., 1997. "Searching for stationarity: Purchasing power parity under the current float," Journal of International Economics, Elsevier, vol. 43(3-4), pages 313-332, November.
  7. Jorion, Philippe & Sweeney, Richard J., 1996. "Mean reversion in real exchange rates: evidence and implications for forecasting," Journal of International Money and Finance, Elsevier, vol. 15(4), pages 535-550, August.
  8. Levin, Andrew & Lin, Chien-Fu & James Chu, Chia-Shang, 2002. "Unit root tests in panel data: asymptotic and finite-sample properties," Journal of Econometrics, Elsevier, vol. 108(1), pages 1-24, May.
  9. Oh, Keun-Yeob, 1996. "Purchasing power parity and unit root tests using panel data," Journal of International Money and Finance, Elsevier, vol. 15(3), pages 405-418, June.
  10. MacDonald, Ronald, 1996. "Panel unit root tests and real exchange rates," Economics Letters, Elsevier, vol. 50(1), pages 7-11, January.
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