How Much Can We Generalize From Impact Evaluations?

Eva Vivalt

Journal of the European Economic Association, 2020, vol. 18, issue 6, 3045-3089

Abstract: Impact evaluations can help to inform policy decisions, but they are rooted in particular contexts and to what extent they generalize is an open question. I exploit a new data set of impact evaluation results and find a large amount of effect heterogeneity. Effect sizes vary systematically with study characteristics, with government-implemented programs having smaller effect sizes than academic or non-governmental organization-implemented programs, even controlling for sample size. I show that treatment effect heterogeneity can be appreciably reduced by taking study characteristics into account.

Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:oup:jeurec:v:18:y:2020:i:6:p:3045-3089.

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