This text provides speech and language therapists and language researchers with a state-of-the art review covering all aspects of speech and language development in individuals with Down syndrome. Written by leading experts in the field, it includes chapters on: the principles which should guide intervention, prelinguistic development, pragmatics and communication, literacy and language, augmentative communication, intervention with adolescents and adults, maintenance of skills for older adults, and a perspective on pertinent issues. Each chapter summarizes research and provides guidelines for effective interventions.This book should be a valuable guide to those working in the field who wish to be able to provide evidence-based interventions for individuals with Down syndrome and to contribute to their quality of life by improving their communication skills.