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Does PPP hold in African countries? Further evidence based on a highly dynamic non-linear (logistic) unit root test

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  • Tsangyao Chang
  • Hsu-Ling Chang
  • Hsiao-Ping Chu
  • Chi-Wei Su

Abstract

With a view to investigating whether the purchasing power parity (PPP) theory holds true for selected African countries during the January 1980-December 2003 period, we employ a rigorous, highly dynamic non-linear (logistic) unit root test, as first advanced by Leybourne et al. (1998), which is considerably more powerful than those tests traditionally used. Compared with the rejection of the null of the unit root process for only one of the 22 countries under study when we use the traditional ADF, PP, KPSS, NP and the DF-GLS unit root tests, with the Leybourne et al. (1998) test, we strongly reject the null of the unit root process for a surprising six of the 22 countries. These empirical results clearly indicate that PPP holds true for these six countries, namely the Central African Republic, the Cote d'Ivoire, Kenya, Madagascar, Uganda and Lesotho.

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  • Tsangyao Chang & Hsu-Ling Chang & Hsiao-Ping Chu & Chi-Wei Su, 2006. "Does PPP hold in African countries? Further evidence based on a highly dynamic non-linear (logistic) unit root test," Applied Economics, Taylor & Francis Journals, vol. 38(20), pages 2453-2459.
    • Handle: RePEc:taf:applec:v:38:y:2006:i:20:p:2453-2459
    DOI: 10.1080/00036840500427890
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    1. Mohsen Bahmani‐Oskooee & Tsangyao Chang & Farhang Niroomand & Omid Ranjbar, 2020. "Fourier nonlinear quantile unit root test and PPP in Africa," Bulletin of Economic Research, Wiley Blackwell, vol. 72(4), pages 451-481, October.
    2. Chi-Wei Su & Tsangyao Chang & Yu-Shao Liu, 2012. "Revisiting purchasing power parity for African countries: with nonlinear panel unit-root tests," Applied Economics, Taylor & Francis Journals, vol. 44(25), pages 3263-3273, September.
    3. Jean-Francois Hoarau, 2010. "Does long-run purchasing power parity hold in Eastern and Southern African countries? Evidence from panel data stationary tests with multiple structural breaks," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 15(4), pages 307-315.
    4. Lawrence Edwards & Neil Rankin, 2016. "Is Africa integrating? Evidence from product markets," The Journal of International Trade & Economic Development, Taylor & Francis Journals, vol. 25(2), pages 266-289, March.
    5. David Silvera, 2010. "The Antecedents and Consequences of Defensive Attributions inProduct-Harm Crises," Working Papers 0012, College of Business, University of Texas at San Antonio.
    6. International Monetary Fund, 2009. "Sierra Leone: Selected Issues and Statistical Appendix," IMF Staff Country Reports 2009/012, International Monetary Fund.
    7. Su Zhou, 2007. "Stationarity of Asian-Pacific real exchange rates," Working Papers 0012, College of Business, University of Texas at San Antonio.
    8. Zhou, Su, 2008. "Stationarity of Asian-Pacific real exchange rates," Economics Letters, Elsevier, vol. 98(1), pages 16-22, January.
    9. Neil Balchin & Lawrence Edwards & Asha Sundaram, 2015. "A Disaggregated Analysis of Product Price Integration in the Southern African Development Community," Journal of African Economies, Centre for the Study of African Economies, vol. 24(3), pages 390-415.
    10. Mohsen Bahmani‐Oskooee & Scott W. Hegerty, 2009. "Purchasing Power Parity In Less‐Developed And Transition Economies: A Review Paper," Journal of Economic Surveys, Wiley Blackwell, vol. 23(4), pages 617-658, September.
    11. Xie, Zixiong & Chen, Shyh-Wei & Hsieh, Chun-Kuei, 2021. "Facing up to the polysemy of purchasing power parity: New international evidence," Economic Modelling, Elsevier, vol. 98(C), pages 247-265.
    12. International Monetary Fund, 2007. "Angola: Selected Issues and Statistical Appendix," IMF Staff Country Reports 2007/355, International Monetary Fund.

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