The typical identification strategy in aid effectiveness studies assumes donor motives do not influence the impact of aid on growth. We call this homogeneity assumption into question, first constructing a model in which donor motives matter and then testing the assumption empirically.

The impact of aid inflows on relative prices and output is ambiguous. Aid inflows that increase domestic expenditure are likely to cause real exchange rate appreciation, ceteris paribus. However, if this expenditure raises the capital stock in the traded goods sector, then output in this sector...

While we know a lot about how countries become prosperous, we have only begun to understand how aid contributes to economic growth and poverty reduction. The development record is mixed and no robust association between the volume of aid and development performance has been discovered. The...