“…The process seems to work, notwithstanding the fact that psychologists know neither what types of data, for what problems, collected under what conditions will identify appropriate actions to be taken nor which ones enhance health status (Brook, Kamberg, & Lohr, 1982). Drude and Nelson (1982) stated that there are no generally accepted standards for mental health care, especially outpatient services. Psychologists know that patients who receive good quality treatment should be better off than those who do not, but that factors beyond the clinician's control may neutralize or enhance the treatment effect.…”