[Depression and schizophrenia (author's transl)]

Illnesses with both schizophrenic and affective elements represent the most unsatisfactory aspect in the classification of the functional psychoses. It is uncertain whether schizo-affective psychoses are schizophrenias, affective psychoses or if they are distinct from either. Although they probably do not constitute a homogenous grouping, they should be classified separately at present, if only to facilitate further study.