“…The patients were seen at University College Hospital and also at the Cassel Hospital where mothers with a psychiatric illness are admitted with their children (Main, 1958). This clinical experience supported Hemphill's finding that there is a clear-cut clinical entity of puerperal depression, distinct from manic-depressive psychosis (Hemphill, 1952), and the work of other writers (Brew & Seidenberg, 1950; Boyd, 1942) who suggest that the patients have a characteristic type of personality. This paper is largely concerned with this type of personality, and aspects of it which lead to the breakdown, particularly that which grows out of the early relationship between the patient and her mother.…”