Behavioral decision research offers a general approach to studying cognitive aspects of decision making, as well as a platform for studying their interplay with social and affective processes. Applied to any decision, behavioral decision research involves three interrelated tasks: (a) "normative" analysis, identifying the expected impacts of possible choices; (b) "descriptive" study, characterizing how individuals view the decision, in terms comparable to the normative analysis; and (c) "prescriptive" interventions, helping people to bridge critical gaps in their understanding. Applied to adolescents' decisions, behavioral decision research provides analytical and empirical procedures for clarifying the challenges that young people face and their success in addressing them. It recognizes that competence varies by individual and by decision, leading to domain-specific policies and interventions, affording teens as much autonomy as they can manage.