In spite of many inherent problems, impact evaluation should remain an integral part of program evaluation, both because impact evaluation brings its budget justification with it, and because its focus on causal hypotheses is an essential part of evaluation. Methodology based on the author's body of work is reviewed. (SLD)

Three articles on evaluation in the Federal government describe a decline in budget and staff support, narrowing of the agenda to internal management issues, and the subordination of evaluation to other functions. Issues for the future of Federal government evaluation are discussed. (SLD)