It is easy to learn the average income of a resident of El Salvador or Albania. But there is no systematic source of information on the average income of a Salvadoran or Albanian. We create a first estimate a new statistic: income per natural—the mean annual income of persons born in a given...

We estimate the "place premium"--the wage gain that accrues to foreign workers who arrive to work in the United States. First, we estimate the predicted, purchasing-power adjusted wages of people inside and outside the United States who are otherwise observably identical--with the same country...

The international goal for rich countries to devote 0.7% of their national income to development assistance has become a cause célèbre for aid activists and has been accepted in many official quarters as the legitimate target for aid budgets. The origins of the target, however, raise serious...

Global private capital flows have barely touched the poorest nations; the rich invest mostly with the rich. Confronted with this wealth bias in cross-border investment flows, one of the starkest facts of the global economy, theorists and empiricists have spent roughly the last decade looking for...

Augmented measures of savings and wealth in the national accounts are critical to conceptualizing and achieving sustainable development. After developing the theory of genuine savings-traditional net savings less the value of resource depletion and environmental degradation plus the value of...

Rich countries have made efforts for half a century to help people in poor countries catch up to rich-country standards of living. Those efforts have included giving foreign aid, encouraging overseas investment, dismantling trade barriers, and spreading ideas and institutions. That is, their...

Large numbers of doctors, engineers, and other skilled workers from developing countries choose to move to other countries. Do their choices threaten development? The answer appears so obvious that their movement is most commonly known by the pejorative term “brain drain.” This paper...

Raising school enrollment, like economic development in general, takes a long time. This is partly because, as a mountain of empirical evidence now shows, economic conditions and slowly- changing parental education levels determine children’s school enrollment to a greater degree than...

The emigration of highly skilled workers can in theory lower social welfare in the migrant-sending country. If such workers produce a good whose consumption conveys a positive externality—such as nurses and doctors in a very poor country—the loss can be greater, and welfare can even decline...

Past research on aid and growth is flawed because it typically examines the impact of aggregate aid on growth over a short period, usually four years, while significant portions of aid are unlikely to affect growth in such a brief time. We divide aid into three categories: (1) emergency and...