Abstract:The non psychopathological features of 107 patients diagnosed as having mania were compared to those of 1,208 patients with the diagnosis of schizophrenia. Both diagnoses were made according to K, Schneider's criteria. Significant differences were found between the two groups in regard to the age of onset, marital status and educational and occupational levels. Manic patients tended to become ill more as age advances than schizophrenics, and exhibited better educational and occupational levels. The premorbid adjustment level of manic patients was found to be higher than that of schizophrenics.