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Cointegration, dynamic structure, and the validity of purchasing power parity in African countries

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  • Arize, Augustine C.
  • Malindretos, John
  • Nam, Kiseok

Abstract

The purpose of this paper is to test the validity of the purchasing power parity (PPP) in Africa in the context of a multivariate error-correction model. This approach allows for the consideration of long-run elasticities as well as the dynamics of the short-run adjustment of exchange rates to changes in domestic and foreign prices. Monthly data for fourteen African countries are used, and the period examined is 1973:4 through 2007:7 (i.e., 412 observations). Results from long-run cointegration analysis, short-run error correction models, persistence profile analysis and variance decomposition all confirm the validity of PPP in these moderate-to-high inflation countries, where estimates of half-life deviations from PPP are found to be outside the range suggested by Rogoff (1996).

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  • Arize, Augustine C. & Malindretos, John & Nam, Kiseok, 2010. "Cointegration, dynamic structure, and the validity of purchasing power parity in African countries," International Review of Economics & Finance, Elsevier, vol. 19(4), pages 755-768, October.
    • Handle: RePEc:eee:reveco:v:19:y:2010:i:4:p:755-768
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    2. Oladunjoye Opeyemi Nathaniel, 2019. "Validity of Purchasing Power Parity (PPP) Hypothesis in the Ecowas (1980–2017)," Emerging Economy Studies, International Management Institute, vol. 5(2), pages 141-156, November.
    3. Arize, Augustine C. & Malindretos, John & Ghosh, Dilip, 2015. "Purchasing power parity-symmetry and proportionality: Evidence from 116 countries," International Review of Economics & Finance, Elsevier, vol. 37(C), pages 69-85.
    4. Ntokozo Patrick Nzimande & Marcel Kohler, 2016. "On the Validity of Purchasing Power Parity: Evidence from Energy Exporting Sub-Saharan Africa Countries," SPOUDAI Journal of Economics and Business, SPOUDAI Journal of Economics and Business, University of Piraeus, vol. 66(3), pages 71-82, July-Sept.
    5. Saint Kuttu, 2018. "Asymmetric mean reversion and volatility in African real exchange rates," Journal of Economics and Finance, Springer;Academy of Economics and Finance, vol. 42(3), pages 575-590, July.
    6. Arize, Augustine C., 2011. "Purchasing power parity in LDCs: An empirical investigation," Global Finance Journal, Elsevier, vol. 22(1), pages 56-71.
    7. Mücahit Aydın, 2019. "Investigation of the Validity of Purchasing Power Parity Hypothesis with Fourier Unit Root Tests: The Case of Turkey," EKOIST Journal of Econometrics and Statistics, Istanbul University, Faculty of Economics, vol. 30(0), pages 35-48, June.
    8. Arize, Augustine C. & Malindretos, John & Igwe, Emmanuel U., 2017. "Do exchange rate changes improve the trade balance: An asymmetric nonlinear cointegration approach," International Review of Economics & Finance, Elsevier, vol. 49(C), pages 313-326.
    9. Augustine Arize & Ebere Ume Kalu & Greg Lubiani & Ndubuisi N. Udemezue, 2024. "Public Health Expenditure and Sustainable Health Outcomes in 45 Sub-Saharan African Countries: Does Government Effectiveness Matter?," Economies, MDPI, vol. 12(6), pages 1-19, May.
    10. Chin-Ping King, 2012. "Half Life of the Real Exchange Rate: Evidence from the Nonlinear Approach in Emerging Economies," Journal of Economics and Management, College of Business, Feng Chia University, Taiwan, vol. 8(1), pages 1-23, January.
    11. Wu, Jyh-Lin & Cheng, Su-Yin & Hou, Han, 2011. "Further evidence on purchasing power parity and country characteristics," International Review of Economics & Finance, Elsevier, vol. 20(2), pages 257-266, April.

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