First published in 1989 as Language and Communication in Mentally Handicapped People this collection is a comprehensive overview of research into all aspects of communication in people with learning disabilities. The topics covered range from children's development and the acquisition of sounds through to the communicative environments of adults and the use of subtle conversational devices. The book presents people with learning disabilities as active users of language with complex patterns of development and meaning. It brings together recent advances in phonology and the development of communication, and makes linguistic issues clear to the non-specialist. It will be invaluable to researchers in psychology and speech therapy, and to all those who work with learning disabled individuals.