The relationship between values, social class, and duration of psychotherapy of patients and therapists at a moderate cost outpatient clinic in New York City was investigated. Values were measured by the following scales: Strong Vocational Interest Blank, Ways to Live scale, Study of Values, and the Optimal Personality Integration Scale. Lower-class patients tended to be more authoritarian-submissive than upper-class patients. The significant linear relationship indicated that the lower the social class and the higher (more authoritarian-submissive) the patient's score relative to his therapist, the longer the duration of treatment. The significant curvilinear relationship indicated that for lower-class patients, the greater the authoritarian-submissiveness relative to their therapists, the longer the duration of treatment. It was postulated that authoritarian-submissive patients might tend to remain in therapy precisely because of this quality.