Income inequality thresholds that should be avoided for governance to promote economic growth with evidence from Africa

Johannes Tabi Atemnkeng, Laura Senke Ngeh, Nkwetta Ajong Aquilas and Afuge Ramsy Akame

African Development Review, 2024, vol. 36, issue 4, 594-607

Abstract: This paper examines the role of inequality on the link between governance and economic growth in 44 African countries with data running from 2008 to 2018. Using a system GMM and the generalized least square (GLS) estimators, we establish that the effects of governance on growth are rightly conditioned by inequality. The GMM and GLS estimates portray positive effects of inequality on growth, but only the GMM estimates are significant. For both estimators, the effect of institutions on economic growth is positive and significant. However, inequality retards growth when embedded in selected institutions, which implies a substitution relationship between institutions and inequality on growth. The turning point beyond which inequality begins to contribute negatively to economic growth ranges between 34% and 49% based on the GMM estimates or 40.15% and 44.5% for the GLS analysis depending on the institutional indicator used. Therefore, institutions can only be effective in economic development if income inequality levels of not less than 0.34 and not more than 0.49 are maintained to ensure that inequality does not negate growth. Policy makers of African countries should ensure better income distribution alongside good institutions to achieve sustainable economic growth in the region.

Date: 2024
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https://doi.org/10.1111/1467-8268.12785

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