This indispensible resource provides step-by-step guidelines for conducting a thorough, responsible evaluation for ADHD. The authors focus on the pragmatic needs of the practicing clinician and address not only the broad concepts integral to conducting sound ADHD assessments but also the specifics that will enable practitioners to implement those principles. Appropriate for seasoned clinicians who wish to add ADHD evaluations to their practices as well as new clinicians and graduate students who are developing expertise. Provides explicit guidance as to what diagnoses can masquerade as ADHD and how to recognize these, as well as what diagnoses are often present with ADHD Explains how to recognize when inattention is part of ADHD, and when it is a symptom of other conditions (e.g., emotional, neurological, and other issues) Provides clear, concise guidance regarding how to responsibly and accurately assess for ADHD by integrating results from a multi-method approach Illustrates not only what elements to use in an ADHD evaluation, but also why to use each element Provides quick guidance to researchers who wish to increase ecological validity of their findings by replicating real-world clinical diagnostic procedures in selecting clinical participants