The present study deals with young adolescents’ involvement in what is generally referred to as a problematic youth group. In this book, an overarching meta-theoretical framework that is useful for the development and testing of integrated models is developed. The authors describe an integrated Conditions-Controls-Exposure model and present descriptive and theory-testing analyses. Special attention is paid to the end-to-end integration of the micro-ecological setting, social controls (social bonds, monitoring, school social bond), personal controls (moral beliefs, locus of control and self-control) and the situational context. The implications of the findings for future research are discussed.