We compare the wages of workers inside the United States to the wages of observably identical workers outside the United States—controlling for country of birth, country of education, years of education, work experience, sex, and ruralurban residence. This is made possible by new and uniquely...

Learning profiles that track changes in student skills per year of schooling often find shockingly low learning gains. Using data from three recent studies in South Asia and Africa, we show that a majority of students spend years of instruction with no progress on basics. We argue shallow...

How much larger are the consumption possibilities of an urban US household with per capita expenditures of 1,000 US dollars per month than a rural Indonesian household with per capita expenditures of 1,000,000 Indonesian Rupiah per month? Consumers in different markets face widely different...

The approach of 2015, the target date of the Millennium Development Goals, sets the stage for a global reengagement on the question of “what is development?” We argue that the post-2015 development framework for development should include Millennium Development Ideals which put into...

In this paper we examine how policymakers and practitioners should interpret the impact evaluation literature when presented with conflicting experimental and non-experimental estimates of the same intervention across varying contexts. We show three things. First, as is well known,...

Does the government control of school systems facilitate equality in school quality? There is a trade-off. On the one hand, government direct control of schools, typically through a large scale hierarchical organization, could produce equalization across schools by providing uniformity in...

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...

Ghost towns dot the West of the United States. These cities boomed for a period and then, for various reasons, fell into a process of decline and have shrunk to a small fraction of their former population. Are there ghost countries—countries that, if there were population mobility, would only...

The Millennium Development Goal for primary schooling completion has focused attention on a measurable output indicator to monitor increases in schooling in poor countries. We argue the next step, which moves towards the even more important Millennium Learning Goal, is to monitor outcomes of...

Poverty reduction is now, and quite properly should remain, the primary objective of the World Bank. But, when the World Bank dreams of a world free of poverty—what should it be dreaming? I argue in this essay that the dream should be a bold one, that treats citizens of all nations equally in...