Abstract: As reported in the last papet, a sorting test was applied to 100 normals and 128schizophrenics and distinct difference was found between the two groups as to the per-centages of correct classification, test time and the quality of classification. The same test was again applied to 127 patients with the following diagnoses: schizo-phrenics atypical 22; psychotics reactive 21; psychoneurotics 21; manics 13; depressives8; general paretics 20 and other organics 22. Percentage of correct classification and totalresponse scores are used as parameters for indicating similarities or dissimilarities amongthe different groups of patients. The main results are as follows: 1. There is marked similarity within each diagnostic group in all the tests. 2. Similarities are also found between the following groups: manics and depres-sives; general paretics and other organics; schizophrenics, typical and atypical. 3. There is remarkable difference between schizophrenic and the following groups:manics, depressives, general paretics and other organics. Differences are also presentamong the three groups of schizophrenics, psychotics reactive and psychoneurotics.

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