Preface / Christopher Peterson -- What is positive youth development? / William Damon -- The Role of subjective well-being in positive youth development / Nansook Park -- Character strengths and positive youth development / Youth as people : the protective aspects of youth development in after-school settings / Heather Johnson Nicholson, Christopher Collins, and Heidi Holmer -- Research-based character education / Marvin W. Berkowitz, and Melinda C. Bier -- What works in school-based social and emotional learning programs for positive youth development / Roger P. Weissberg, and Mary Utne O'Brien -- Positive youth development in the United States : research findings on evaluations of positive youth development programs / Richard F. Catalano ... [et al.] -- Indicators of child well-being : the promise of positive youth development / Kristin Anderson Moore, Laura Lippman, and Brett Brown -- Cultivating optimism in childhood and adolescence / Jane Gillham, and Karen Reivich -- What is wisdom and how can we develop it? / Robert J. Sternberg -- Positive stigma : examining resilience and empowerment in overcoming stigma / Margaret Shih -- Book review essay : Positive social science / Christopher Peterson