The subjects of the inquiry were 13 psychosomatic patients who had all undergone psychotherapy in the special research unit of the University Clinic for Psychosomatics in Giessen (FRG) in 1971. Data collection took place at the beginning (time a) and end (time b) of in-patient treatment, and then again 4 years later (time c). The same test battery was administered each time. The results indicate that a significant change in the patients' self-image came about during in-patient treatment and the catamnesis carried out 4 years later attests to the stability of this development. The question of whether this change reflects the patient's adjustment to the ideals of his therapist--conformity with the 'norm'--or can be interpreted as a criterium for true ego development in the sense of an expansion of his psychic possibilities, is discussed.