Emil J. Posavac, PhD, is professor of Psychology, Loyola University of Chicago, Chicago, IL. Posavac's research has been presented in a number of psychology, program evaluation, and health care journals. He is the editor of a collection of papers on program evaluation in mental health care and, with Raymond G. Carey, PhD, the author of a general text on methods in program evaluation.
Raymond G. Carey, PhD, is director of the Health Care Evaluation Division of Parkside Medical Services Corp. in Park Ridge, IL. He is a specialist in health care evaluation and employee attitude surveying, has set up hospital quality assurance programs, and has published many articles on his research.