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This is an analytic description of the development of the thought processes from primitive to civilized man. The mental activities of the schizophrenic patient and the primitive man are compared and the conclusion is reached that an intensive study of the latter may lead to an understanding of the schizoid thought. The author believes that such a study would yield clues for the investigation of schizophrenia, whether or not the disease is considered as a regression to primitive conditions.
Das Denken und seine krankhaften Störungen.. JAMA. 1930;94(9):658. doi:10.1001/jama.1930.02710350058035