The authors demonstrate how to estimate a model of oligopoly pricing when products are multidimensionally differentiated. They provide an empirical counterpart to recent theoretical work on product differentiation. Using specifications informed by economic theory, the authors estimate price-cost...

As international economic integration has progressed, policy makers have started to ponder the possible conflicts arising from nationally pursued competition policies in more unified goods markets. An idea underlying much of this discussion is the notion that international trade liberalisation,...

The authors measure the responsiveness of returns to capital invested in six U.S. industries to shocks to the prices of competing import goods. Unanticipated, positive shocks to import prices cause higher than normal stock-market returns in all six industries. The magnitudes of these responses...

This study analyzes the impact of large-scale fee elimination for secondary school girls in The Gambia on the quantity, composition, and achievement of students. The gradual rollout of the program across geographic regions provides identifying variation in the policy. The program increased the...

We assess the impact of large-scale fee elimination for secondary school girls in The Gambia on the quantity, composition, and achievement of students. The gradual rollout of the program across geographic regions provides identifying variation in the policy. The program increased the number of...

We provide the first evidence on the causal effect of border enforcement on the full spatial distribution of Mexican immigrants to the United States. We address the endogeneity of border enforcement with an instrumental variables strategy based on administrative delays in budgetary allocations...

We evaluate the impact of the Gambian hardship allowance, which provides a salary premium of 30-40% to primary school teachers in remote locations, on the distribution and characteristics of teachers across schools. A geographic discontinuity in the policy's implementation and the presence of...