To investigate the effects of negative symptoms of schizophrenia a on the long-term prognosis, 148 schizophrenic patients were applied Scale for the Assessment of Negative Symptoms and Diagnostic and Prognostic Schedule. The author devided long-term prognosis into the group of good prognosis(85 cases) and the group of poor prognosis (63 cases) and to find out the difference of symptom structure between two groups, tried factor analysis with SPSS/PC^(+).
The results were summarized as follows：
1. In the group of good prognosis, 3 factors were extracted as disturbed expression factor, lack of content of speech factor and subjective inattentiveness. avolition. alogia factor. In the group of poor prognosis, 4 factors were extracted as disturbed expression and poverty of speech factor, anhedonia and asociality factor, subjective avolition. anhedonia. asociality. alogia factor and inattentiveness foactor.
2. Distrubed expression was the common factor in both groups and significant symptom for diagnosis, and anhedonia. asocia1ity and inattentiveness were marked in the group of poor prognosis and these sumptoms were thought to be as the singificant indicator in differentiating both groups.
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