schizophrenic, schizoaffective, or schizophreniform according to DSM-IV

treatment-resistant

presenting pathologic violent-aggressive behavior on admission

at risk for self damage

age: 18-65

patient is not participating in any other study at time of this study

minimal score of 70 on PANSS

prior resistance to at least 2 different classes of neuroleptics

OAS scores of at least 4 points in physical aggression sections and at least 2 points in verbal aggression section

Clozapine IM and Aggression in Schizophrenic Patients