We present a two-step approach of assessing whether major donors of foreign aid have met recent demands for less proliferated and better coordinated aid efforts. First, we calculate Theil indices revealing the concentration of each donor's aid on recipient countries and specific aid sectors....

We assess whether bilateral and multilateral donors of foreign aid specialized and coordinated their activities with other donors as agreed in the Paris Declaration of 2005. We account for donor heterogeneity, varying aid priorities and recipient characteristics in order to isolate changes in...

In this paper, we define a new class of richness measures. In contrast to the often used headcount, these new measures are sensitive to changes in rich persons' income and therefore allow for a more sophisticated analysis of richness. We demonstrate the application of these new measures to...