This comprehensive volume shows how to use both diagnostic and behavioral assessment knowledgeably and effectively throughout the process of treatment. The two traditions have developed along separate paths--each with its own conceptual underpinnings and psychometric strengths. Used together, they can produce a complete picture of a child's or adolescent's needs and strengths. The expert editors and contributors describe the full range of evidence-based assessment tools and illustrate their application with two intake-to-termination case examples, both based on DSM-5. Reproducible tools include a behavioral recording form and a multipage case conceptualization worksheet that can be downloaded and printed in a convenient 8 1/2" x 11" size.