Measuring change when true experimental conditions do not exist is a difficult process. This article reviews the artifacts of change measurement in evaluations and quasi-experimental designs, delineates considerations in choosing a model to measure change under nonideal conditions, and suggests ways to organize models to facilitate selection.…

This report is a retrospective account of a single research project conducted between 1973 and 1976 which involved a field study of the administrative feasibility of vouchers for skill training in the Work Incentive Program (WIN) in Portland, Oregon. (The program was designed to change relationships among clients, WIN staff, and training vendors,…