Incomes in the poorest two quintiles on average increase at the same rate as overall average incomes. This is because, in a global dataset spanning 118 countries over the past four decades, changes in the share of income of the poorest quintiles are generally small and uncorrelated with changes...

The authors'study of aid, investment, and policies in Africa leads them to four principal conclusions: 1) The traditional links between aid, investment, and growth are not robust. Aid does not necessarily finance investment and investment does not necessarily promote growth. 2) Differences in...