Negative v Positive Schizophrenia

摘要: • We developed criteria for dividing the schizophrenic syndrome into three subtypes: positive, negative, and mixed schizophrenia. Positive schizophrenia is characterized by prominent delusions, hallucinations, positive formal thought disorder, persistently bizarre behavior; negative schizophrenia, affective flattening, alogia, avolition, anhedonia, attentional impairment. In either both symptoms are prominent, or neither prominent. explored validity of these in a variety ways. Significant differences between types were noted using external validators such as premorbid adjustment, indices cognitive dysfunction, ventricular brain ratio, course hospital. The correlational structure symptom complexes also provided further support our approach to subtyping.