The Alkire and Foster (2011) methodology, as the mainstream approach to the measurement of multi-dimensional poverty in the developing world, is insensitive to inequality among the multidimensionally poor individuals and does not consider simultaneously the concepts of efficiency and...

In this paper, we use the World Income Inequality Database to assess the main trends in inequality within countries since around 1990. We cope with the heterogeneity in the original information (regarding the measure of resources, equivalence scale, etc.) by focusing on the trends rather than on...

The evidence shows that between 1993 and 1999 real GDP increased by 32 percent and per capita GDP by 29 percent. During the same period, the headcount index of poverty fell from 43.2 percent in 1993 to 36.4 percent in 1999, and the poverty gap, which measures the depth of poverty, fell from 16.2...

Although the determinants of income are complex, the results are surprisingly uniform. To a first approximation, top incomes follow a power-law distribution, and the redistribution of income corresponds to a change in the power-law exponent. Given the messiness of the struggle for resources, why...

We investigate how income inequality affects social welfare in a model of voluntary contributions to multiple pure public goods. Itaya, de Meza, and Myles (1997) show that the maximization of social welfare precludes income equality in a single pure public good model. In contrast, we show that...