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...

Does foreign aid promote aggregate economic growth? In contrast to widespread perceptions, academic studies of this question have been rapidly converging towards a positive answer. We employ a simulation approach to (i) validate the coherence of recent empirics and (ii) calculate plausible...

Financing and the role of aid within the water sector are poorly understood. We estimate the levels of spending achieved in developing countries during the Millennium Development Goals period to be US$80 billion per year. Aid represented a substantial proportion of total sector financing in...

This paper suggests that an optimal local content policy in the context of flawed institutions is a more minimal one than those typically pursued by developing countries with recently discovered petroleum reserves. We argue that local content requirements need to be seen as a public expenditure...