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HOW MUCH CAN WE GENERALIZE FROM IMPACT EVALUATIONS?

机译:我们可以从影响评估中概括多少?

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摘要

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.
机译:影响评估可以有助于为政策决策提供信息,但它们植根于特定情况,并且在多大程度上推广是一个悬而未决的问题。 我利用了一个新的影响评估结果的数据集,并找到了大量效应异质性。 效应大小随着研究特征而系统地变化,政府实施程序的效果大小比学术或非政府组织实施程序更小,甚至控制样本量。 我表明,通过考虑研究特征可以明显降低治疗效果异质性。

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