Augmentative and alternative communication concerns the use of non-speech communication modes for people unable to use speech and for augmenting communication for people with limited spoken language. This book focuses on the use of manual and graphic communication systems for clinical populations with developmental disorders of speech and language, including children, adolescents and adults with autism, dysphsia, intellectual impairment and motor impairment. Among the topics covered are: augmentative and alternative communication in Europe; joint attention and communication; implications for assessment and alternative language intervention in autism and related disorders; language input and attention strategies; communication functions in aided language use; being an interesting conversation partner; a neurolinguistic approach to graphic language intervention; augmented telecommunication for people with intellectual impairment; improving communication and language skills of children with cerebral palsy; the social world of non-speaking people; and the psychology and sociology of introducing augmentative and alternative communication in Hungary.