This paper is the sixth in a series of 'Studies in Psychopathology Using a Self-Assessment Inventory'. It is of particular interest psychoanalytically as another of the many experimental studies that use nonanalytic disciplines to validate psychoanalytic concepts. In this instance, a factor-analysis of twenty-six possible phobic responses on a psychological inventory demonstrates that two major groups of phobias may be distinguished: the phobias theoretically linked with separation anxiety, and those that are manifestations of castration anxiety.