An information feedback model and an ideology of evaluation are posed and contrasted with experiences in evaluation research. Impact on policy is the criterion for success of an evaluation and political constraints block this impact. Some ways social researchers might conceptualize and construct an appropriate base of power are considered.…

The first half of this monograph provides an overview of the theoretical concerns of evaluators. Definitions are provided of accountability, measurement, assessment, evaluation research, formative and summative evaluation, goal-free evaluation, goal-based evaluation, and evaluation. Several models of evaluation are described and discussed,…