Psychological approaches are commonly used to understand and treat addictive disorders, in conjunction with, or separate from other therapeutic paradigms. This book focuses on psychological assessments and interventions and in doing so, presents a useful, coherent view of the field. There is particular emphasis on evidence-based treatments and practical strategies which clinicians can adopt. Case studies will be used throughout to illustrate different approaches. The contributors, all experts in their fields, draw from their extensive experience and research to focus on key knowledge and best practice. The book is organised in three sections: conceptual and prevalence issues; assessment and treatment of addiction problems; and service organisation and professional challenges. In presenting an array of rigorously evaluated psychological approaches, the book will enable readers to select the most suitable assessments and interventions for their clients.