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Testing PPP for the South African Rand/US Dollar Real Exchange Rate at Different Data Frequencies

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  • Guglielmo Maria Caporale
  • Luis A. Gil‐Alana

Abstract

This paper tests the PPP hypothesis for the South African rand/US dollar real exchange rate using a fractional integration framework. The results suggest that the real exchange rate of the South African rand with respect to the US dollar is a highly dependent variable with an order of integration very close to 1. This finding is not affected by the data frequency considered (daily, weekly or monthly). Also, there appears to be a single break in December 2001 (possibly corresponding to a change in the monetary policy framework), with the unit root null being rejected in favour of d > 1 for the periods before the break, but not afterwards. Thus, our results strongly reject the PPP hypothesis for the South African rand/US dollar rate across data frequencies, since shocks are found to affect the exchange rate forever.

Suggested Citation

  • Guglielmo Maria Caporale & Luis A. Gil‐Alana, 2015. "Testing PPP for the South African Rand/US Dollar Real Exchange Rate at Different Data Frequencies," African Development Review, African Development Bank, vol. 27(2), pages 161-170, June.
    • Handle: RePEc:bla:afrdev:v:27:y:2015:i:2:p:161-170
    DOI: 10.1111/1467-8268.12131
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    Cited by:

    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. Caporale, Guglielmo Maria & Gil-Alana, Luis A. & You, Kefei, 2018. "Exchange rate linkages between the ASEAN currencies, the US dollar and the Chinese RMB," Research in International Business and Finance, Elsevier, vol. 44(C), pages 227-238.
    3. 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.
    4. repec:zbw:bofrdp:2016_020 is not listed on IDEAS

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