Repression was considered by Freud as a key mechanism for everyone, especially for normals and neurotics. His Repression paper, written in 1915, was psychoanalytically definitive. Of course, much had been written before and even more was written after. Anna Freud's book The Ego and the Mechanisms of Defence included repression and was published by Hogarth in 1937. Sears published an evaluative review of research on repression 1943, and again in 1944 (Experimental analysis of psychoanalytic phenomena. In Hunt, J. Mc V., Ed., Personality and the Behavior Disorders. Vol. I New York: Ronald). Zellers' analogues offered many suggestions for the researcher or reader. MacKinnon and Dukes published an evaluative review in 1962 which included a history of the concept and the early work of Jung and of Lewin's student Zeigarnik. Repression ought to be differentiated from suppression and from denial. In the bibliography, there is included some research on repression between the late 1920's and the middle 1960's. (Author)