This document provides an overview of Nancy Schlossberg's Transition Theory. The theory examines factors that influence a person's ability to cope with transition, defined as any event or non-event that results in changed relationships, routines, assumptions, and roles. The theory identifies three types of transitions (anticipated, unanticipated, and nonevents), three adaptation outcomes, and four factors (situation, self, support, and strategies) that influence a person's ability to cope with transition. The theory has applications for student affairs professionals in helping students and adult learners cope with transitions.