Among the topics covered: ·         Transdisciplinary research perspective: a theoretical framework for substance abuse research ·         Longitudinal methods in substance use research ·         Considerations in blending qualitative and quantitative components in substance abuse research ·         Using surveys to study substance use behavior ·         Applications of GIS to inform substance abuse research and interventions ·         Evaluating substance use prevention and treatment programs is an essential resource for health services and public health professionals, policymakers, and researchers working and training in the field of addiction. It encourages the rigor and understanding necessary to address widespread social and public health concerns.