A long-standing research tradition on political culture argues that greater support for core liberal values leads to a rejection of destructive political activities and reduced support for violent politics. In this vein, many contemporary analysts of security policy contend that a lack of...

Religious adherence has been hard to study in part because it is hard to measure. We develop a new measure of religious adherence, which is granular in both time and space, using anonymized mobile phone transaction records. After validating the measure with traditional data, we show how it can...

Building state capacity is uniquely challenging in fragile states. We report results from a randomized evaluation of a major Afghan government initiative to increase capacity by modernizing its payroll. The reform, which required teachers to biometrically register and receive salary payments via...

We review an emerging experimental literature studying institutional change. Institutions are a key determinant of economic growth, but the "critical junctures" in which institutions can change are not precisely defined. For example, such junctures are often identified ex post, raising...