Impact evaluation
Impact evaluation assesses the changes that can be attributed to a particular intervention, such as a project, program or policy, both the intended ones, as well as ideally the unintended ones. In contrast to outcome monitoring, which examines whether targets have been achieved, impact evaluation is structured to answer the question: how would participants’ well-being have changed if the intervention had not been undertaken? This involves counterfactual analysis, that is, a comparison between what actually happened and what would have happened in the absence of the intervention.
Impact evaluation examines the initial effect of a program on proximal targets of change, such as policies, behaviors, or attitudes. Thus impact evaluation corresponds to assessment of the initial objectives of the program.
Impact evaluation monitors the acceptance of recommendations and the implementation of recommendations once accepted.
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Contributors: Prab R. Tumpati, MD