3ie ~ International Initiative for Impact Evaluation

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Impact Evaluations

The 3ie impact evaluation database is an essential resource for policymakers and researchers who are looking for evidence on what works, what doesn’t, and why in development.

The database contains information on over 2500 impact evaluations and links to the original studies.

Impact evaluations provide the most rigorous evidence of what works in international development because they assess the true impact of an intervention, programme, policy, or project by developing a counterfactual. Counterfactual analysis is the comparison between what actually happened and what would have happened in the absence of the intervention. They use experimental and quasi-experimental methods as well as qualitative analyses.

How this database is organised

Searching in this database will bring up published impact evaluations from the Impact Evaluation Repository as well as completed and ongoing 3ie-Funded Impact Evaluations

  • Studies in the Impact Evaluation Repository are published either as journal articles, books or book chapters, reports, or working papers as part of a working paper series. The Repository contains summaries of all published reports of 3ie-funded studies as well as hundreds of non-3ie funded studies.
  • The 3ie-Funded Impact Evaluations database contains descriptions of ongoing impact evaluations as well as summaries of completed studies.

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