Handbook for learning about positive psychology concepts and measures
Published in 2003, the Positive Psychological Assessment Handbook edited by Shane J. Lopez and C. R. Snyder, provides information on how to best research positive personality characteristics such as positive affect, emotional intelligence, and flow. The Handbook provides measures, theoretical models, and research regarding the various concepts within the field. Each section within the Handbook contains a description of the theoretical background of each concept in positive psychology, discussions of practical and measurement issues, strategies on how to select the best measure, and various assessment tools and measures for both research and in practice.
Although not specifically geared toward adolescents, the Positive Psychological Handbook is a good tool to use when wanting to assess youth from a positive psychological framework.