How should policymakers disseminate information: by broadcasting it widely (e.g., via mass media), or letting word spread from a small number of initially informed "seed" individuals? While conventional wisdom suggests delivering information more widely is better, we show theoretically and...

A set of randomized experiments shed light on how markets and information influence household decisions to adopt nutritional innovations. Of 400 Indian villages, we randomly assigned half to an intervention where all shopkeepers were offered the option to sell a new salt, fortified with both...