Scholarship pertinent to the nature of human plasticity and the contemporary theoretical stress on developmental systems theories suggest that the regulation of dynamic person-context relations should be the key focus of inquiry in the study of adolescent development. An exemplar of a theory congruent with this relational conception of adolescent development is the Selection, Optimization, and Compensation (SOC) model offered by Baltes, Baltes, and colleagues. The model may be a value-added contribution to the adolescent literature in several respects: through illustrating the centrality of selection, optimization, and compensation processes in conceptualizing the regulation of the person-context relations that characterize development in adolescence; by integrating key themes within the adolescent development theoretical and empirical literatures; and through suggesting ideas for extending these literatures in new and useful ways, including needed directions for research and applications to policies and programs that are aimed at enhancing adaptive regulation in adolescence. We illustrate these value-added contributions of the SOC model by focusing on theory and research pertinent to arguably the central construct in the study of adolescence, identity. In addition, we discuss the implications of the SOC model for using developmental systems theory to understand the relation between individual development and social constraints or opportunities. The methodological features of research using the SOC model are noted, and its implications for both the development of the person and for the maintenance and perpetuation of civil society are presented.