Peter W. Chommie, Ph.D., is Associate Profes sor, School of Social Work, University of Minne sota, Minneapolis, Minnesota. Joe Hudson, Ph.D., is Associate Professor, School of Social Work, University of Minnesota, Duluth, Minne sota. Demand has been growing in the last sev eral years for formal evaluation of human service programs.1 This has been reflected most dramatically in the increasing funds being allocated for program evaluation, par ticularly by the federal government. Bu chanan and Wholey have noted, for ex ample, that the amount of evaluation re search funds allocated in the Departments of Health, Education, and Welfare, Hous ing and Urban Development, and Labor increased 30 percent between fiscal years 1971 and 1973.2