Horizontal Inequalities in Africa: Measurement Issues
Horizontal inequalities in Africa: measurement issues SK Tetteh-Baah, K Harttgen, I Günther Chair of Development Economics ETH Zurich, Switzerland Abstract This study estimates different indicators of horizontal or between-group inequality to track the progress made against inequality of opportunity across 38 African countries between 1990 and 2016. Such progress largely depends on the assumptions held in measuring horizontal inequality [HI]. Previous studies have shown with traditional methods of measurement that HI has been generally falling in Africa. The traditional use of a relative measure of inequality assumes that people are sensitive to relative, not absolute, differences when comparing distributions. The traditional use of plutocratic method of weighting also assumes that majority groups count more than, not equal to, minority groups. Using data from the Demographic and Health Survey program, the study demonstrates that the traditional approach to the measurement of HI embellishes the progress made against unequal opportunities over time, compared to what more egalitarian approaches would suggest. Much of the reduction in horizontal inequalities in educational attainment and wealth in Africa, as shown in previous studies, is being driven by overall growth in living standards, and not necessarily the narrowing of absolute gaps in sub- national regional, ethnic, gender, or religious outcomes over time. However, the study finds falling horizontal inequalities in child non-stunting and child survival, which is robust to the measure of inequality applied, indicating greater equality of opportunity for the new generation of African people. JEL codes: D63 Equity, Justice, Inequality, and Other Normative Criteria and Measurement J71 Discrimination Key words: horizontal inequality, inequality of opportunity, gender, ethnicity, sub-national region, religion, Africa, educational attainment, wealth, child non-stunting, child survival 1.
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