What is meant by "impact evaluation"?

"Impact evaluation" refers specifically to assessing the changes that can be directly attributed to a particular program or intervention. This form of evaluation seeks to understand the effectiveness of the program by examining what outcomes have occurred as a result of its implementation. It aims to isolate the effects of the program from other external variables that could influence results, making it crucial for determining whether the program met its goals and objectives.

In distinguishing it from other types of evaluation measures such as participant satisfaction or data collection methods, impact evaluation focuses on tangible changes—like improvements in health, education progress, or economic development—that can be directly linked to the intervention. This assessment is vital for stakeholders who need evidence of a program's efficacy for decision-making, policy formulation, or the allocation of resources.