We use factor analysis to derive a robust measure of religiosity from items reported in five waves of the World Value Survey. Our measure of religiosity is negatively correlated with per capita income. Development apparently causes religiosity to fall to about half its pre-modern level. Most...

We argue that donors could improve the effectiveness of foreign aid by pursuing complementary and coherent non-aid policies. In particular, we hypothesize that aid from donors that are open to immigration has stronger growth effects than aid from closed donors. We estimate the aid-growth nexus...

Political proximity between donor and recipient governments may impair the effectiveness of aid by encouraging favoritism. By contrast, political misalignment between donor and recipient governments may render aid less effective by adding to transaction costs and giving rise to incentive...