Institutional factors that constrain the Congress's use of evaluation research are illustrated by a case history of congressional deliberations about the Professional Standards Review Organization program. Guidelines for researchers who would like to make their work more useful in the policymaking process are proposed. (Author/BW)

Efforts of the 96th Congress to use evaluation data in considering whether to change policies about reimbursement for psychotherapy services. (Author/BW)

Seven articles highlight evaluations that are especially investigative in nature to examine how common elements in these studies can be used to improve evaluation and practice. The evaluator is seen as detective, ethnographer and management consultant, national program monitor and analyst, and international development specialist. (SLD)