The economic growth of South Africa has been disappointing over the last quarter century. This note addresses a conceptual problem that arises because of composition effects. Two important features of the South African economy are, first, its extreme inequality (primarily between the white population and the African population). Additionally, the African population has been growing rapidly, while the white population has experienced a declining share. This note derives an explicit equation for the impact of inequality and population-growth differences on the growth of "per capita" GDP. It shows that the combination of divergent population growth and high inequality can lead to an apparent drag on measured economic growth even though the components, and a more adequate measure of economic welfare, are growing at a healthy rate. Copyright (c) 2008 The Author. Journal compilation (c) 2008 Economic Society of South Africa.
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