Individual and contextual bases of thriving in adolescence: a view of the issues.

We introduce this special issue on the individual and contextual bases of adolescent thriving by describing the relational developmental systems theory-based, positive youth development (PYD) perspective that frames much of contemporary research about health and positive development across the adolescent period and that, more specifically, frames the 4-H Study of PYD, the data set from which the empirical work in this special issue is drawn. All articles point to the combined role of characteristics of the person and ecological assets in the family, school, or community settings of youth to promote the development of PYD. We discuss how these articles provide evidence about the empirical usefulness of the PYD perspective and discuss how research testing the PYD model has new and important implications for both adolescent development research and for the application of developmental science.