How will worldwide changes in population affect pressures for international migration in the future? We contrast the past three decades, during which population pressures contributed to substantial labor flows from neighboring countries into the United States and Europe, with the coming three...

We examine "agglomeration shadows" that emerge around large cities, which discourage some economic activities in nearby areas. Identifying agglomeration shadows is complicated, however, by endogenous city formation and "wave interference" that we show in simulations. We use the locations of...

The accumulation of international reserves by emerging markets raises the question of how to best utilize these funds. This paper explores two routes through which the pooling of reserves could enhance stability and welfare. First, the reserve pool could be used for emergency lending in response...

On their fiftieth anniversary, the International Monetary Fund and the World Bank were" extensively reviewed, both to mark the occasion and to consider, often critically roles and performance. This paper reviews the functions of the two institutions in light of their" evolution over the past...

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...

This paper looks at the problem of making multiple lending decisions which affect the supply of the product when the consequences of these lending decisions are interrelated via the effect on the world price of the product. This is termed the 'adding up problem'. It is argued that thinking of...

Blended finance---the use of public and philanthropic funding to crowd in private capital---is a potential way to finance a more sustainable world. While blended finance holds the promise of being catalytic in mobilizing vast amounts of private capital, little is known about this practice. In...

We report the results from a field experiment with a micro lender in Uganda to test the effectiveness of privately implemented incentives for loan repayment. Using a randomized control trial we measure the impact of three different treatments: Borrowers are either given a lump sum cash reward...

There is limited causal evidence on the effects of different public procurement regulations on project quality and value-for-money for projects funded by national governments and foreign aid donors. This paper uses policy and experimental variation to study how two key contracting...

This paper is a brief evaluation of the Eurosystem's monetary-policy regime after its first year, in particular of the extent to which it is similar to inflation targeting as practiced by an increasing number of central banks. I examine the Eurosystem's goals, framework for monetary-policy...