Little is known about the impact of policy interventions other than taxes and bans aimed at reducing the demand for single-use plastic bags. We report results from a natural field experiment conducted in a large supermarket chain to test interventions based on nudges (information provision),...

This paper studies inference for the average treatment effect in randomized controlled trials with covariate-adaptive randomization. Here, by covariate-adaptive randomization, we mean randomization schemes that first stratify according to baseline covariates and then assign treatment status so...

This paper studies inference for the average treatment effect in randomized controlled trials with covariate-adaptive randomization. Here, by covariate-adaptive randomization, we mean randomization schemes that first stratify according to baseline covariates and then assign treatment status so...