There is a widespread perception among academic researchers and aid practitioners alike that empirical cross-country analysis fails to find any significant link between aid flows and growth, and that aid is successful only when associated with good policies in the recipient countries. These...

We investigate the marginal productivity of investment across countries. The aim is to estimate the return on investments financed by foreign aid and by domestic resource mobilization, using aggregate data. Both returns are expected to vary across countries and time. Consequently we develop a...