There are many ways of defining and categorizing language and communication disorders. This introduction examines the definitions of language impairments in children; categorizing language impairments; methods of diagnosis and assessment; related or accompanying problems; testing methods and strategies for intervention. Examining the prevalence of language disorders in children, the book is an important summary of current awareness of language impairments in children. It offers advice on assessment methods and intervention, and provides a detailed glossary of the most important terminology used in the book.