Are credit markets still local? Evidence from bank branch closings / The causal effect of competition on prices and quality: Evidence from a field experiment / Understanding the average impact of microcredit expansions: A Bayesian hierarchical analysis of seven randomizing experiments / Job search periods for welfare applicants: Evidence from a randomized experiment / Partners in crime / The effect of pollution on worker productivity: Evidence from call center workers in China / Severe air pollution and labor productivity: Evidence from industrial towns in China / Labor drops: Experimental evidence on the return to additional labor in microenterprises / The welfare effects of nudges: A case study of energy use social comparisons / Financial incentives as signals: Experimental evidence from the recruitment of village promoters in Uganda / Early childhood education by television: Lessons from Sesame Street.