This book presents the findings from the Enhancing Positive Outcomes in Youth and the Community (EPYC) study. EPYC is a ground-breaking nationwide 10-year longitudinal study on young offenders in Singapore. It focuses on understanding crime prevention, rehabilitation, and reintegration of these youths. Data were collected through yearly interviews, external assessments, and linkage of administrative records to provide a comprehensive picture of participants. In addition, a non-offender youth sample was included as a normative comparison sample. The research and findings of this book focus on: Prevalence rates and comorbidity of Emotional and Behavioural Problems (EBPs) in young offenders Drug use and Re-offending Risk and Protective Factors for EBPs As this study represents one of the first in Asia and one of few across the globe with such in-depth investigations, it aims to advance the understanding of youth offending and associated emotional and behavioural issues. This book is best suited for criminal justice and mental health scholars, practitioners, and policy makers who are working with Asian populations or interested in cross-cultural comparisons.