One hundred and thirteen women participated in a study of the relationship between acquaintance rape, ego-identity achievement, and locus of control. Results showed that, compared to women who had not been assaulted, survivors of acquaintance rape reported lower ego-identity achievement and greater beliefs that the outcomes of their lives were controlled by luck, chance, or powerful others. It was further found that the relationships between acquaintance rape and the respective forms of external locus of control (Chance and Powerful Others) were mediated by level of ego-identity achievement.People make assumptions about themselves and about the world. These assumptions form the basis of a personal theory of reality which allows them a sense of self, a sense of efficacy, and a sense of order, and which influences their choices and actions. However, these assumptions often cannot account for traumatic events (Janoff-Bulman, 1985;Janoff-Bulman, 1989;Janoff-Bulman & Hanson-Frieze, 1983).Rape is an interpersonal trauma that may be defined as the nonconsensual sexual penetration of a person, obtained by physical force, by threat of bodily harm, or when the victim is incapable of giving consent by virtue of mental SOCIAL