Growth Impacts of Income Inequality: Empirical Evidence From Nigeria

The debate on whether income inequality promotes, restricts, or is independent of economic growth has been widely studied and discussed in development economics discourse. However, a careful reading of this extensive extant and burgeoning literature suggests that, other than the ambivalent nature and the fact that the bulk of these studies relied heavily on cross-section/-country/panel econometric analysis, empirical studies examining the nexus in the context of less developed economies, particularly, African countries, has received less attention, as most of the extant studies predominantly focused on developed economies. This current study, thus, attempts to examine the impact of inequality on growth in Nigeria spanning between the period 1970 and 2018. It also examined the theoretical predictions of some of the distinct transmission channels through which inequality impacts growth. Time series econometrics were applied. The results obtained consistently revealed that inequality hurts long-run growth in Nigeria. Also, the results obtained revealed that inequality in income increases relative redistribution and fertility, but lessens investment, gross enrollment ratio, and property rights protection in Nigeria, which may in turn impede growth.