The GMC project: a current investigation of the development of a large population of hearing-impaired children.

This report of work in progress describes the GMC project, an investigation of the language and development of hearing-impaired children born within the Greater Manchester area in the years 1977-1980 inclusive. The aim of the language section of the project is to describe the acquisition and development of spoken language by a complete population of children with sensori-neural hearing loss. Comprehensive audiological, aetiological and sociological background information is kept as well as the results of standardized psychological and language tests and videotaped samples of spontaneous language. Details of objectives and methodology are given in the report.