This book examines current and emerging techniques for the dynamic and evolving field of autism assessment. It provides a detailed, research-based discussion of the latest innovations in assessment from a practical perspective accumulated from decades of autism assessment and treatment training and experience in both educational and clinical settings. The book provides personal insights into the engaging and intriguing autism population and case studies of children who have captured the hearts and minds of clinicians nationwide. As the rates of autism have grown more than 10-fold during the past decade, researchers have questioned whether unclear diagnostic guidelines may be to blame for the high numbers of recently diagnosed children. Rather, the authors argue, tighter agreed upon methods for diagnosis of autism have allowed for more accurate identification of children who indeed require supportive treatments and therapies. This unique volume provides readers with clarity about best-practice assessment approaches from sequential and pragmatic perspectives as well as an understanding of critical issues and hurdles in ascertaining the appropriate diagnosis. In addition, myriad potential comorbid conditions or differential diagnoses are addressed. This book is a must-have resource for clinicians and practitioners as well as researchers and graduate students in the fields of child and school psychology, behavioral therapy, social work, psychiatry, pediatrics, forensic psychology, and educational and healthcare policy.