... passivity and apathy, difficulty in abstract thinking, lack of spontaneity and flow of conversation, and stereotyped thinking (N1 to N7); and health concerns, anxiety, guilt, tension, mannerisms and ... University, New York, NY, USA 2. Department of Psychiatry and Nuclear Medicine, Tehran Psychiatric Institute, Iran University of Medical Sciences, Tehran, Iran AAbbssttrraacctt Many neuroimaging ... that the efficacy of Clozapine is clinically significant on the negative symptomatology but is delayed compared to the efficacy on the other dimensions of symptomatology evaluated using the PANSS...