constrains the move to the new sector. Thus, turbulent periods provide opportunities for structural shifts in favor of the new sector. The analysis assesses both the positive aspects of policies and the welfare costs associated with departures from fully flexible labor markets. It also discusses...

We present a model of growth and technology transfer based on the idea that technologies are specific to particular combinations of inputs. We argue that this model is more realistic than the usual specification, in which an improvement in any technique for producing a given good improves all...

We consider the differential incentives of the North and the South to provide patent protection to innovating firms in the North. The two regions are assumed to have a different distribution of preferences over the range of exploitable technologies. Due to the scarcity of R&D resources, the two...

Why should multilateral lending exist in a world where private capital markets are well developed and governments have their own bilateral aid programs? If lending by the World Bank, IMF, and regional development banks has an independent rationale, it must rest on advantages generated by the...

Critics of foreign aid programs argue that these funds often support corrupt governments and inefficient bureaucracies. Supporters argue that foreign aid can be used to reward good governments. This paper documents that there is no evidence that less corrupt governments receive more foreign aid....

We document that, in rural Uganda, the entry of foreign aid reduces government provision of similar services because the organization that delivers aid often hires the government worker, thereby reducing state capacity. Access to any public services and population well-being worsen in villages...

We examine the supply-side and demand-side determinants of global bilateral food aid shipments between 1971 and 2008. First, we find that domestic food production in developing countries is negatively correlated with subsequent food aid receipts, suggesting that food aid receipt is partly driven...

This paper studies the impact of aid volatility in a two-period model where production may occur with either a traditional or a modern technology. Public spending is productive and "time to build" requires expenditure in both periods for the modern technology to be used. The possibility of a...

The Millennium Development Goals call for reducing by half the proportion of people without sustainable access to safe drinking water. This goal was adopted in large part because clean water was seen as critical to fighting diarrheal disease, which kills 2 million children annually. There is...

We examine one of the most important and intriguing puzzles in economics: why it is so hard to find a robust effect of aid on the long-term growth of poor countries, even those with good policies. We look for a possible offset to the beneficial effects of aid, using a methodology that exploits...