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In recent years psychiatry has recognized the importance of a study of the personality and has tried to determine its share in the psychotic reaction from the point of view of personality reactions. By personality I mean the psychobiologically integrated unit which has developed and is developing during life. One can see an increasing organization of the personality from infancy to maturity, but not all personalities reach full organization, and in many people certain aspects of the personality are less organized or integrated. In the feebleminded group there is primarily a lack of organization of the intellectual aspect. In other types of psychopathic make-up, other parts of the personality may be less developed and organized. Physical and mental development in the broadest sense are not parallel. It is also known that some organs of the body develop sooner than others. One speaks of maturity, therefore, when the whole personality has