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Flexible Fourier stationary test in purchasing power parity for African countries

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  • Chi-Wei Su
  • Hsu-Ling Chang
  • Meng-Nan Zhu

Abstract

This study applies stationary test with a Fourier function proposed by Enders and Lee (2004, 2009) to test the validity of long run Purchasing Power Parity (PPP) to assess the nonstationary properties of the real exchange rate for 20 African countries. We find that our approximation has higher power to detect U shaped breaks and smooth breaks than linear method if the true data generating process of exchange rate is in fact a stationary nonlinear process. We examine the validity of PPP from the nonlinear point of view and provide robust evidence clearly indicate that PPP holds true for almost African countries. Our findings point out their exchange rate adjustment is mean reversion towards PPP equilibrium values in a nonlinear way.

Suggested Citation

  • Chi-Wei Su & Hsu-Ling Chang & Meng-Nan Zhu, 2012. "Flexible Fourier stationary test in purchasing power parity for African countries," Applied Economics, Taylor & Francis Journals, vol. 44(25), pages 3255-3262, September.
    • Handle: RePEc:taf:applec:44:y:2012:i:25:p:3255-3262
    DOI: 10.1080/00036846.2011.570729
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    References listed on IDEAS

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    1. Junsoo Lee & Walter Enders, 2004. "Testing for a unit-root with a nonlinear Fourier function," Econometric Society 2004 Far Eastern Meetings 457, Econometric Society.
    2. Mahdavi, Saeid & Zhou, Su, 1994. "Purchasing power parity in high-inflation countries: further evidence," Journal of Macroeconomics, Elsevier, vol. 16(3), pages 403-422.
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    1. Khraief, Naceur & Shahbaz, Muhammad & Heshmati, Almas & Azam, Muhammad, 2020. "Are unemployment rates in OECD countries stationary? Evidence from univariate and panel unit root tests," The North American Journal of Economics and Finance, Elsevier, vol. 51(C).
    2. E. N. Gyamfi & E. F. Appiah, 2019. "Further evidence on the validity of purchasing power parity in selected African countries," Journal of Economics and Finance, Springer;Academy of Economics and Finance, vol. 43(2), pages 330-343, April.
    3. Fumitaka FURUOKA, 2014. "Does Hysteresis Exist in Unemployment? New Findings from Fourteen Regions of the Czech Republic," Czech Journal of Economics and Finance (Finance a uver), Charles University Prague, Faculty of Social Sciences, vol. 64(1), pages 59-78, February.
    4. Furuoka, Fumitaka, 2014. "Unemployment hysteresis in Central Asia," MPRA Paper 60323, University Library of Munich, Germany.
    5. Vasilii Erokhin & Tianming Gao, 2020. "Impacts of COVID-19 on Trade and Economic Aspects of Food Security: Evidence from 45 Developing Countries," IJERPH, MDPI, vol. 17(16), pages 1-28, August.

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