The contributions of interpersonal trauma exposure and world assumptions to predicting dissociation in undergraduates.

This study examines the relationship between world assumptions and trauma history in predicting symptoms of dissociation. It was proposed that cognitions related to the safety and benevolence of the world, as well as self-worth, would be related to the presence of dissociative symptoms, the latter of which were theorized to defend against threats to one's sense of safety, meaningfulness, and self-worth. Undergraduates from a midwestern university completed the Multiscale Dissociation Inventory, World Assumptions Scale, and Traumatic Life Events Questionnaire. Consistent with the hypotheses, world assumptions were related to the extent of trauma exposure and interpersonal trauma exposure in the sample but were not significantly related to non-interpersonal trauma exposure. World assumptions acted as a significant partial mediator of the relationship between trauma exposure and dissociation, and this relationship held when interpersonal trauma exposure specifically was considered. The factor structures of dissociation and world assumptions were also examined using principal component analysis, with the benevolence and self-worth factors of the World Assumptions Scale showing the strongest relationships with trauma exposure and dissociation. Clinical implications are discussed.