Psycho-analytical theory and anthropology, having started in close accord, have diverged materially, because the psycho-analysts have failed to modify their original theories in accord with later anthropological findings. Certain anthropological data on which the Oedipus complex, for example, rests, have been proven to be less than universal truths. Similarly

anthropologists have found simpler and less recondite explanations for primitive customs than those presented by psycho-analysis. However, the two lines of thought converge again in Freud's theory of id, ego and super-ego, which correspond with the anthropologists' biological man, individual personality and total culture. Upon this basis the two disciplines seem likely to be able to resume co-operation in further study of preliterate man.