The book addresses the challenge of providing clinicians and others with an accurate and concise overview of the extensive research knowledge which can inform treatment, prevention and policy regarding drug and alcohol use. Clinicians and students in graduate psychology programs will be provided not only with a summary of the research but with the tools to understand the basics of research methodology. With the increased emphasis on empirically supported interventions in the addiction field, this book provides an essential link for clinicians and students to appreciate the value of these practices as well as learning about their limitations.