We estimate the world distribution of income by integrating individual income distributions for 125 countries between … hosted 11% of the world's poor in 1960. It hosted 66% of them in 1998. We estimate nine indexes of income inequality implied … by our world distribution of income. All of them show substantial reductions in global income inequality during the 1980s …

Penn World Tables and of the World Development Indicators better estimate true income per capita. We find that revisions of …-price series in both PWT 8.0 and PWT 8.1, the two most recent vintages of the PWT. We additionally find that the World Development … Indicators are as good, and often better, measures of unobserved true income as are any recent vintages of the Penn World Tables …