This article explores the available research literature on language development and language interventions among deaf and hard of hearing (d/hh) children. This literature is divided into two broad categories: Research on natural languages (specifically American Sign Language and spoken English) and research on communication systems (specifically…

The basic impoverishment of deafness is not lack of hearing but lack of language. To illustrate this, we have only to compare a 4-year-old hearing child, with a working vocabulary of between 2,000 and 3,000 words, to a child of the same age, profoundly deaf since infancy, who may have only a few words at his command. Even more important than…

The English language development of an unselected group of 20 hearing impaired children (mean age approximately four) taught Signed English was studied over a four-year period. (Author/PHR)

Described is the cognitive-developmental training of 19 mute autistic children, mean age 11 years, with special language signs and connected boards elevated 3 to 6 feet above the ground to promote awareness of body in relation to surrounding objects. (MC)

Disfluencies in the verbal and signed language of a 10-year-old moderately mentally retarded boy were analyzed. Discussion addresses implications for the accurate characterization of stuttering in manual communication and appropriate approaches to management in such cases. (DB)