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A normal relationship ? Poverty, growth, and inequality

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  • Lopez, Humberto
  • Serven, Luis

Abstract

Using a large cross-country income distribution dataset spanning close to 800 country-year observations from industrial and developing countries, the authors show that the size distribution of per capita income is well approximated empirically by a lognormal density. The null hypothesis that per capita income follows a lognormal distribution cannot be rejected-although the same hypothesis is unambiguously rejected when applied to per capita consumption. The authors show that lognormality of per capita income has important implications for the relative roles of income growth and inequality changes in poverty reduction. When poverty reduction is the overriding policy objective, poorer and relatively equal countries may be willing to tolerate modest increases in income inequality in exchange for faster growth-more so than richer and highly unequal countries.

Suggested Citation

  • Lopez, Humberto & Serven, Luis, 2006. "A normal relationship ? Poverty, growth, and inequality," Policy Research Working Paper Series 3814, The World Bank.
  • Handle: RePEc:wbk:wbrwps:3814
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    Keywords

    Achieving Shared Growth; Inequality; Economic Conditions and Volatility; Services&Transfers to Poor; Poverty Impact Evaluation;
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