Law, James text London Chapman & Hall 1992 monographic 191 p. : The development of early communication; what is language impairment; factors associated with language impairment; behavioural difficulties and their relationship to language impairment; the early identification of hearing loss and the effects of impaired hearing on language development; the process of early identification; the health visitor's perspective; intervention; early identification - a question of science or politics? Appendices: the structure of the ear; language and cognitive development in normal children; the age at which 90per cent of children attain a selected range of linguistic functions; the age at which most children develop speech sounds. ed. by James Law Language Disorders; therapy 618.928 55 LAW 0412393409