Abstract: The present thesis seeks to examine the common patterns of academic motivation that emerge in a sample of undergraduates from a Self-Determination Theory perspective. Using a person-centered technique, this study assessed the ways that intrinsic, identified, introjected, and extrinsic motivations combine to motivate students. Furthermore, a mixed-methods strategy was used to provide both quantitative survey data (n = 181) and qualitative interview data (n = 20). Cluster analysis revealed five common motivational profiles: a primarily autonomous group, an autonomous-introjected group, a primarily controlled group, a moderate group, and a high quantity group. In order to examine the relative merits of maintaining each style of motivation, several significant correlates were measured (academic achievement, emotions, engagement, needs support, and intrinsic or extrinsic orientation towards the college). These analyses showed the primarily controlled group to be the least adaptive of the five, with participants in that group experiencing the least needs support and engagement, and the most maladaptive academic emotions (i.e. low enjoyment, high shame). Generally, the clusters with the highest intrinsic motivation were the most adaptive, with the autonomous-introjected group surpassing the others on some measures. Overall, this study provides evidence for the benefits of person-centered and mixed-methods research, in that the use of these methods allowed for rich, comprehensive analyses of academic motivation within this population.