A comparison, based on questionnaires, is made between the evaluation of the efficacy of treatment at the Michael Reese Out-Patient Clinic, as seen by the therapist and as seen by the patient. Although there was considerable agreement, the major surprise came from a sizable group of patients, labeled by the therapists as unsuccessfully treated, who considered themselves successfully treated. The author speculates that this was due to the interest of the therapist in the patient, even though the therapist felt it in negative terms, such as in countertransference difficulties. It appeared that the therapist's pessimistic views stemmed from lack of gratification from patients of this type. The author feels that the interest of the therapist in the patient is the sine qua non of successful treatment.