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This paper updates and extends the work of Barro (2000). International data confirm the presence of the Kuznets curve - an inverse-U shape relationship between income inequality and per capita GDP - that is relatively stable from the 1960s into the 2000s. The direct effect of international openness on income inequality is also found to be positive. On the other hand, a cross-country-growth equation shows a negative effect of income inequality on economic growth, holding fixed a familiar set of other explanatory variables. This effect diminishes as per capita GDP rises and may be positive for the richest countries.
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