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Nonlinearity and the Unit Root Hypothesis for African Per Capita Real GDP


  • Sakiru Solarin
  • Emmanuel Anoruo


Once described as an epic center of growth tragedy, African nations have lately achieved relatively rapid growth rates, which have raised hopes that the continent is finally on the path to economic convergence with other emerging economies. However, there is a need to establish whether stabilization policies for the purpose of enhancing the GDP are effective in African countries. One of the means of examining the effectiveness of these policies is through the investigation of the unit root properties of per capita GDP in the continent. This study aims to add to the existing papers on GDP in African countries by investigating the non-stationarity of per capita GDP in 52 African countries, while using a newly proposed nonlinear unit root test. The results suggest that per capita GDP follows the non-stationarity process in half of the entire sample.

Suggested Citation

  • Sakiru Solarin & Emmanuel Anoruo, 2015. "Nonlinearity and the Unit Root Hypothesis for African Per Capita Real GDP," International Economic Journal, Taylor & Francis Journals, vol. 29(4), pages 617-630, December.
  • Handle: RePEc:taf:intecj:v:29:y:2015:i:4:p:617-630
    DOI: 10.1080/10168737.2015.1081615

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    References listed on IDEAS

    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.
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    Cited by:

    1. Solarin, Sakiru Adebola & Shahbaz, Muhammad & Stewart, Chris, 2018. "Is the consumption-income ratio stationary in African countries? Evidence from new time series tests that allow for structural breaks," Economics Discussion Papers 2018-2, School of Economics, Kingston University London.
    2. Phiri, Andrew, 2018. "Robust analysis of convergence in per capita GDP in BRICS economies," MPRA Paper 86936, University Library of Munich, Germany.

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