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Unit root and trend breaks in per capita output: evidence from sub-Saharan African countries

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  • Eléazar Zerbo
  • Olivier Darné

Abstract

This article examines the nonstationary properties of per capita real output in 28 sub-Saharan African (SSA) countries, covering the period 1960–2014. The sequential testing approach proposed by Kejriwal and Lopez (2013, Econometric Reviews 32(8), 892–927) is used to categorize SSA countries into growth shift, level shift and linear trend hypotheses based on the presence or not of breaks in slope and/or level of the trend function. The break dates are associated to major historical or economic events such as sociopolitical crisis, commodity price fluctuations on international market, the discovery and the exploitation of mineral deposits or unfavourable environmental and climatic conditions. The empirical evidences of appropriate unit root tests fail to reject the unit root hypothesis in all the countries, suggesting that a shock would have a permanent effect on growth process, and stabilization policies may be implemented in dealing with income fluctuations.

Suggested Citation

  • Eléazar Zerbo & Olivier Darné, 2018. "Unit root and trend breaks in per capita output: evidence from sub-Saharan African countries," Applied Economics, Taylor & Francis Journals, vol. 50(6), pages 634-658, February.
    • Handle: RePEc:taf:applec:v:50:y:2018:i:6:p:634-658
    DOI: 10.1080/00036846.2017.1332752
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    References listed on IDEAS

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    1. United Nations UN, 2015. "The Millennium Development Goals Report 2015," Working Papers id:7097, eSocialSciences.
    2. AfDB AfDB, . "African Development Report 2012 - Towards Green Growth," African Development Report, African Development Bank, number 460, March.
    3. United Nations UN, 2015. "The Millennium Development Goals Report 2015," Working Papers id:7222, eSocialSciences.
    4. Mahvash S Qureshi & Mr. Charalambos G Tsangarides, 2006. "What is Fuzzy About Clustering in West Africa?," IMF Working Papers 2006/090, International Monetary Fund.
    5. AfDB AfDB, . "African Development Report 2012 - Overview," African Development Report, African Development Bank, number 464, March.
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    Cited by:

    1. Luis A. Gil-Alana & Sakiru Adebola Solarin & Mehmet Balcilar & Rangan Gupta, 2023. "Productivity and GDP: international evidence of persistence and trends over 130 years of data," Empirical Economics, Springer, vol. 64(3), pages 1219-1246, March.
    2. Emanuele Russo & Neil Foster-McGregor & Bart Verpagen, 2019. "Characterizing growth instability: new evidence on unit roots and structural breaks in long run time series," LEM Papers Series 2019/29, Laboratory of Economics and Management (LEM), Sant'Anna School of Advanced Studies, Pisa, Italy.
    3. Emanuele Russo & Neil Foster-McGregor, 2022. "Characterizing growth instability: new evidence on unit roots and structural breaks in countries’ long run trajectories," Journal of Evolutionary Economics, Springer, vol. 32(2), pages 713-756, April.

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