This volume provides child health care professionals and educators with a comprehensive set of empirically-driven, process-oriented guidelines for assessing children and adolescents who exhibit symptoms of attention-deficit/hyperactivity disorder (AD/HD). Although other texts describe measures or procedures that can be used in assessing AD/HD, none provides any guidelines with respect to the process of conducting an AD/HD assessment. The content of "Assessing Attention-Deficit/Hyperactivity Disorder" includes a detailed description of the defining features of AD/HD, along with comprehensive discussion of the manner in which AD/HD and its associated features unfold across the life span. Also presented is a comprehensive review and critique of various assessment procedures. Against this background, the reader is guided through the process of selecting measures and driving at an accurate AD/HD diagnosis. The text also reviews the process of translating assessment data into treatment recommendations, giving feedback to children and families, and evaluating treatment efficacy. Use of the guidelines described will lead to increased clinical accuracy, not only with respect to diagnosis, but also in terms of assessing the efficacy of various treatments. Rich with case examples, this volume should be of interest to professionals and students who provide clinical services to children and adolescents.