We evaluate the returns to signaling occupation-specific skills using unique administrative data from a nationwide certification program in Colombia. The program certifies skills and issues three certificates: basic, intermediate, and advanced. We use regression discontinuity methods to compare...

We examine the effect of single-sex classes on the pass rates, grades, and course choices of students in a coeducational university. We randomly assign students to all-female, all-male, and coed classes and, therefore, get around the selection issues present in other studies on single-sex...

Early childhood interventions aim to promote skill acquisition and poverty reduction. While their short-term success is well established, research on longer-term effectiveness is scarce, particularly in LDCs. We present results of a randomized scalable intervention in India, that affected...