The Validity of PPP Revisited: An Application of Non-linear Unit Root Test
To this end, the validity of purchasing power parity (PPP) remains a controversial issue, as empirical evidence is inconclusive. This study provides robust empirical evidence to support the view that negligence of non-linearity may be the culprit of these contrasting findings. This paper demonstrates that the non-linear unit root test proposed by Kapetanois et al. [Journal of Econometrics, 2003, 112, pp.359-379] is able to reject unit root in 4 out of 5 cases, implying that deviations of exchange rates is mean reverting towards the PPP equilibrium values from the non-linear perspective, whereas the augmented Dickey-Fuller (ADF) test fails in 4 out of 5 cases. Thus, previous conclusions of the invalidity of PPP may be due to misleading results from the ADF test, which has low power against non-linearity.
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- Kenneth Rogoff, 1996. "The Purchasing Power Parity Puzzle," Journal of Economic Literature, American Economic Association, vol. 34(2), pages 647-668, June.
- 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.
- Sarno, Lucio, 2000. "Real exchange rate behavior in the Middle East: a re-examination," Economics Letters, Elsevier, vol. 66(2), pages 127-136, February.
- Barnett, William A. & Serletis, Apostolos, 2000.
"Martingales, nonlinearity, and chaos,"
Journal of Economic Dynamics and Control,
Elsevier, vol. 24(5-7), pages 703-724, June.
- William A. Barnett & Apostolos Serletis, 1998. "Martingales, Nonlinearity, and Chaos," Econometrics 9805003, EconWPA.
- William Barnett & Apostolos Serletis, 2012. "Martingales, Nonlinearity, And Chaos," WORKING PAPERS SERIES IN THEORETICAL AND APPLIED ECONOMICS 201225, University of Kansas, Department of Economics, revised Sep 2012.
- Edison, Hali J. & Fisher, Eric O'N, 1991. "A long-run view of the European monetary system," Journal of International Money and Finance, Elsevier, vol. 10(1), pages 53-70, March.
- Hali J. Edison & Eric Fisher, 1989. "A long-run view of the european monetary system," International Finance Discussion Papers 339, Board of Governors of the Federal Reserve System (U.S.).
- Corbae, Dean & Ouliaris, Sam, 1988. "Cointegration and Tests of Purchasing Power Parity," The Review of Economics and Statistics, MIT Press, vol. 70(3), pages 508-511, August.
- Azali, M. & Habibullah, M. S. & Baharumshah, A. Z., 2001. "Does PPP hold between Asian and Japanese economies? Evidence using panel unit root and panel cointegration," Japan and the World Economy, Elsevier, vol. 13(1), pages 35-50, January.
- Cuddington, John T. & Liang, Hong, 2000. "Purchasing power parity over two centuries?," Journal of International Money and Finance, Elsevier, vol. 19(5), pages 753-757, October.
- Hsieh, David A, 1989. "Testing for Nonlinear Dependence in Daily Foreign Exchange Rates," The Journal of Business, University of Chicago Press, vol. 62(3), pages 339-368, July.
- Taylor, Mark P. & Peel, David A., 2000. "Nonlinear adjustment, long-run equilibrium and exchange rate fundamentals," Journal of International Money and Finance, Elsevier, vol. 19(1), pages 33-53, February.
- Venus Khim-Sen Liew & Terence Tai-Leung Chong & Kian-Ping Lim, 2003. "The inadequacy of linear autoregressive model for real exchange rates: empirical evidence from Asian economies," Applied Economics, Taylor & Francis Journals, vol. 35(12), pages 1387-1392.
- Baum, Christopher F. & Barkoulas, John T. & Caglayan, Mustafa, 1999. "Long memory or structural breaks: can either explain nonstationary real exchange rates under the current float?," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 9(4), pages 359-376, November.
- Christopher F. Baum & John T. Barkoulas & Mustafa Caglayan, 1998. "Long memory or structural breaks: Can either explain nonstationary real exchange rates under the current float?," Boston College Working Papers in Economics 380, Boston College Department of Economics.
- Charles Engel & Michael K. Hendrickson & John H. Rogers, 1997. "Intra-National, Intra-Continental, and Intra-Planetary PPP," NBER Working Papers 6069, National Bureau of Economic Research, Inc.
- Charles Engel & Michael K. Hendrickson & John H. Rogers, 1997. "Intra-national, intra-continental, and intra-planetary PPP," International Finance Discussion Papers 589, Board of Governors of the Federal Reserve System (U.S.).
- Brock, W.A. & Dechert, W.D. & LeBaron, B. & Scheinkman, J.A., 1995. "A Test for Independence Based on the Correlation Dimension," Working papers 9520, Wisconsin Madison - Social Systems.
- Dirk Te Velde, 2001. "Balance of payments prospects in EMU," NIESR Discussion Papers 178, National Institute of Economic and Social Research.
- O'Connell, Paul G. J., 1998. "The overvaluation of purchasing power parity," Journal of International Economics, Elsevier, vol. 44(1), pages 1-19, February.
- Pesaran, M Hashem & Potter, Simon M, 1992. "Nonlinear Dynamics and Econometrics: An Introduction," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 7(S), pages 1-7, Suppl. De.
- Baum, Christopher F. & Barkoulas, John T. & Caglayan, Mustafa, 2001. "Nonlinear adjustment to purchasing power parity in the post-Bretton Woods era," Journal of International Money and Finance, Elsevier, vol. 20(3), pages 379-399, June.
- Christopher F. Baum & Mustafa Caglayan & John Barkoulas, 1998. "Nonlinear Adjustment to Purchasing Power Parity in the post-Bretton Woods Era," Boston College Working Papers in Economics 404., Boston College Department of Economics, revised 16 Nov 1999.
- Salehizadeh, Mehdi & Taylor, Robert, 1999. "A test of purchasing power parity for emerging economies," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 9(2), pages 183-193, April.
- Jun Nagayasu, 1998. "Does the Long-Run Ppp Hypothesis Hold for Africa? Evidence From Panel Co-Integration Study," IMF Working Papers 98/123, International Monetary Fund.
- Jerry Coakley & Ana-Maria Fuertes, 2001. "Nonparametric cointegration analysis of real exchange rates," Applied Financial Economics, Taylor & Francis Journals, vol. 11(1), pages 1-8. Full references (including those not matched with items on IDEAS)