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ESSAYS
February 16, 2016
The two economic developments that have garnered the most attention in recent years are the concentration of massive wealth in the richest one percent of the world’s population and the tremendous, growth-driven decline in extreme poverty in the developing world, especially in China. But ju...
Multimedia
February 09, 2016
By making this data public, we hope to encourage more development professionals to use the median in evaluating individuals’ material well-being in developing (and developed) countries and progress toward broad-based economic growth and shared prosperity. We also hope that wider use of the median wi...
Multimedia
February 06, 2016
Median measures of well-being give us a better picture than the mean of the well-being of a “typical” individual. Take Nigeria and Tanzania: in 2010, Nigeria’s GDP per capita (at PPP) was $5,123; Tanzania’s stood at only $2,111. This suggests that Nigerians were more than twice as well off as Tanzan...
Blog Post
February 06, 2016
PovcalNet, the World Bank’s global poverty database, provides all kinds of country statistics, including mean income, the share (and number) of the population living in absolute poverty ($1.90), the poverty gap and several measures of income inequality, such as the Gini coefficient. But one th...
ESSAYS
April 28, 2015
The current size of the income-secure middle class and its likely future growth, suggest that
optimism is indeed warranted for many of today’s middle-income countries. But it is not warranted for all of them, and especially not for most of the
low-income countries of South Asia and sub-Sah...
Blog Post
February 10, 2014
Development progress has traditionally been measured in terms of reductions in poverty and increases in per capita GDP, that is, average income as calculated by dividing total income by the total population. My guests on this week’s Global Prosperity Wonkcast, Nancy Birdsall an...
WORKING PAPERS
August 08, 2013
In this paper we identify a group of people in Latin America and other developing countries that are not poor but not middle class either. We define them as the vulnerable “strugglers”, people living in households with daily income per capita between $4 and $10 (at constant 2005 PPP doll...