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The idea of theory-based evaluation (TBE) is plausible and cogent, and it promises to bring greater explanatory power to evaluation. However, problems beset its use, including inadequate theories about pathways to desired outcomes in many program areas, confusion between theories of implementation and theories of programmatic action, difficulties in eliciting or constructing usable theories, measurement error, complexities in analysis, and others. This article explores the problems, describes the nature of potential benefits, and suggests that the benefits are significant enough to warrant continued effort to overcome the obstacles and advance the feasibility of TBE.
Carol H. Weiss (Fri,) studied this question.