Joav Merrick & Daniel T.L Shek 
Positive Youth Development [PDF ebook] 
Theory, Research and Application

In the prevention science approach, focus is put on identifying risk and protective factors in adolescent risk behavior. Based on this approach, many research and prevention programs have been generated in the past few decades. Nevertheless, over-emphasis of adolescent developmental problems has been criticized as focusing too much on adolescent developmental problems and pathologies. In response to this criticism, an alternative approach highlighting the importance of positive youth development has been proposed.