A definitive reference—now extensively revised with 70% new material—this book presents cutting-edge knowledge on how learning disorders develop and how to diagnose and treat them effectively. In additional to dyslexia and mathematics disabilities, the book covers speech and language disorders, attention-deficit/hyperactivity disorder, autism spectrum disorder, and intellectual disability. Accessibly written, it is grounded in genetics, neuroscience, and developmental neuropsychology. Clinicians and educators are guided to make sense of children's impairments and strengths and make sound diagnostic decisions. Best practices in intervention are reviewed. User-friendly features include case examples and summary tables in each disorder-specific chapter.