Collaborative Outcomes Reporting (COR) is an approach to impact evaluation that combines elements of several rigorous non-experimental methods and strategies. You’ll find it on the Approaches page on the BetterEvaluation site - an approach
Jess Dart

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- An impact evaluation approach based on contribution analysis, with the addition of processes for expert review and community review of evidence and conclusions.
- An impact evaluation approach based on contribution analysis, with the addition of processes for expert review and community review of evidence and conclusions.