Objective: The Circle of Six (Co6) phone application (app), winner of the White House's "Apps Against Abuse Challenge," seeks to incorporate friends into sexual victimization risk reduction. Despite its growing presence on college campuses, the feasibility/acceptability of the app to college women is unknown. This mixed methods study…

The prediction and prevention of the initial lapse--which is defined as the first lapse after a period of abstinence--is important because the initial lapse often leads to subsequent lapses (within the same lapse episode) or relapse. The prediction of the initial lapse may allow preemptive intervention to be possible. This dissertation reports on…