We study the design of randomized controlled experiments in environments where outcomes are significantly affected by … experiments. In particular, selective trials can disentangle the effects of treatment, effort, and the interaction of treatment …

resources towards higher-value uses. Data reveals correlations between estate acts, urbanization, and economic development …

Laboratory experiments have been used extensively in economics in the past several decades to lend both positive and … grown in prominence of late--field experiments. I argue that field experiments serve as a useful bridge between data … field experiments can yield important insights into economic theory and provide useful guidance to policymakers. I also draw …

avoid the sharing environment altogether. In four laboratory experiments, prices and social preferences interact to …

, as in lab experiments with student subjects, but are deliberately identified by their trading roles in the natural field …

experiments in development economics. In these comments I will make the case that this move towards shoring up the internal … specifically question the increased use of instrumental variables and natural experiments in labor economics, and of randomized …