Krapf examines depersonalization with phenomenological methods, trying to establish its relation to derealization and to determine the significance of both syndromes. Using Scheler's psychology of feelings, he describes depersonalization and derealization as disorders in the emotional sphere which are subjectively perceived in the intentional references of ego states towards the body and the outside world. He finds the phenomenological data in accordance with the psychoanalytic interpretation of depersonalization as a narcissistic withdrawal of libido. Finally he tries to express the pathological experience in terms of the psychology of time and space.