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