[Performance-psychologic cross-sectional study of young schizophrenic patients with a subchronic and chronic disease course].

According to ICD-9 and DSM-III-R-criteria 14 subchronic schizophrenic male patients (duration of illness less than 2 years) and 17 chronically ill male schizophrenics (duration of illness between 5 to 12 years) matched for sex, age, education, type of illness, and medication were with the aid of 4 tests investigated with respect to time characteristics of performance parameters. Whereas subchronic patients revealed performance scores within the normal range of reference scores, chronically ill patients showed dissociative variations in performance (high scores in reasoning, low scores in speed factor). This can be interpreted as instability of brain functioning which characterizes schizophrenics suffering from a long duration of illness. Correlations between prolonged reactions to "crossmodal" choices and subjective basic symptoms in subchronic patients are hints at well established introspection ability of self regarded complaints.