In this EA Global: San Francisco 2015 talk, Eva Vivalt dicusses AidGrade's work in living meta-analyses of impact evaluations and outlines the challenges inherent in figuring out whether an intervention is truly effective.

In the future, we may post a transcript for this talk, but we haven't created one yet. If you'd like to create a transcript for this talk, contact Aaron Gertler — he can help you get started.

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