[Schizophrenic defect syndromes and drive behavior]. 
First the terms "impulse" (Antrieb) and "schizophrenic defect" (schizophrener Defekt) are explained and defined.  49 (= 12 per cent) of the 409 schizophrenic in-patients, treated 1970-1972, had the symptoms of a schizophrenic defect.  All of them showed disturbances of impulse: more than half the patients a deficiency, nearly a third an unsettled surplus, and about ten percent an alternating impulse.  The deficiency as the alternating impulse usually were accompanied with a negativ mood.  The surplus of impulse was bound up as equal parts with positive and negative moods.  At last any kind of disturbances of described is illustrated by an example.