Brief Psychiatric Rating ScaleSchizophreniaAntipsychotic AgentsSchizophrenic PsychologyPsychiatric Status Rating ScalesPsychotic DisordersClozapineBenzodiazepinesRisperidoneHaloperidolDouble-Blind MethodSeverity of Illness IndexTreatment OutcomeMental DisordersAffective Disorders, PsychoticPsychometrics