Theory, application, design, implementation, and, evaluation of prevention and intervention programs, for school-age youth in school and community, settings. Students also examine the cultural,, social, psychological, family, and political, factors bearing on children's understanding of and, experiences with alcohol and other drugs., Prevention and intervention through enhancement of, social competence are presented from, constructivist and ecological-developmental, perspectives with application to individuals and, to small-group and classroom-based settings.