Both interdisciplinary and international, it provides a coherent appraisal of the current state of the field to help researchers, trainees and practicing clinicians in their daily work. Integrating science and clinical practice, it is a comprehensive reference for all aspects of child and adolescent psychiatry. New to this edition are expanded coverage on classification, including the newly revised Diagnostic and Statistical Manual (DSM-5), and new chapters on systems neuroscience, relationship-based treatments, resilience, global psychiatry and infant mental health. Sixth edition.