Beitchman and Brownlie (child and adolescent psychiatry, U. of Toronto, Canada) provide a guide for clinicians working with children and youth who have language disorders. They describe how these disorders might be affecting children's lives and suggest ways for working with them and their families. They focus on language impairment that emerges in childhood rather than impairment related to speech or impairment that is secondary to a neurological condition. They discuss definitions, diagnostic criteria, types, epidemiology, course and prognosis, differential diagnosis, comorbidities, diagnostic procedures and documentation, theories and models, diagnosis and treatment indications, and treatment methods. There is no index. Annotation ©2013 Book News, Inc., Portland, OR (booknews.com)