Deaf children unable to acquire oral language naturally and who are not exposed to a standard manual language can spontaneously develop a structured sign system that has many of the properties of natural spoken language. This communication system appears to be largely the invention of the child himself. (Authors/BT)

The current state of research into augmentative and alternative communication (AAC) systems is reviewed, and four dimensions of the study of communication handicap are described: structural, developmental, pragmatic (interaction), and technological. Recommendations regarding standardized research reporting procedures are offered in light of the…

An examination of research on language and systems used with deaf children concluded that oral English and manually coded English have produced only limited results. The approach advocates the instructional use of American Sign Language and the teaching of English as a second language to deaf children. (Authors/CL)

Recent research concerning learning via a single mode or particular combination of modes prompted an experiment which used a dual stimuli methodology. Manual sign, graphic, and oral stimuli were presented, in pure and in combination, to normal adults without previous signing experience. An efficiency rating of method of presentation was obtained.…

This study of four moderately to severely aphasic subjects found that success in manual sign training programs is related to severity of aphasia, that aphasic subjects' propositional use of manual signs rarely follows simple acquisition, and that generalization to untrained stimuli or environments does not occur without additional training.…

Two studies explored linguistic development in sign and speech of 10 youth (ages 12-16) with severe intellectual impairments who used manual signs (Makaton vocabulary) for communication. Analysis of semantic relations, lexical development, and word order suggested the children's language had not developed beyond mean length of utterance stage 1.…

This study compared verbal comprehension, verbal production, and gesture production in 40 children (ages 10-49 months) with Down Syndrome (DS) and 40 normally developing children (ages 8-17 months). DS children showed a dissociation between verbal comprehension and production but synchronous development between vocal lexical comprehension and…

Examination of American Sign Language--produced by a deaf child acquiring the language from deaf parents, and videotaped at age 13, 15, 18, and 21 months--shows conformity to many of the phonological rules operative for all languages. (Author/CFM)

Reports research on the communicative behavior of a hearing child whose parents communicated with him, from birth, in both signs and words. The child's expressive ability accelerated in both modalities and this is possibly attributable to the addition of the signed component. (PJM)

To better understand the mechanisms underlying encoding, manual signs and spoken words were presented in a short term memory task to six severely retarded children (11 to 14 years old). It was found that manual signs were encoded differently from spoken words for short term memory storage. (Author/PHR)

During an eight-month treatment regimen utilizing simultaneous sign/speech input, all of the words of a young girl with Down's Syndrome were recorded. Analyses revealed that most of the words she initially signed were later spontaneously spoken and that most of her signed productions evolved into spontaneous spoken productions. (Author/JDD)

A study tested the hypothesis that manual encoding aids learning in the prelingually deaf. Twenty-four adults who used fingerspelling as their primary means of communication participated in two groups of a paired-associate learning paradigm, using eight study-test trial sequences. Those using fingerspelling showed more recall and a faster learning…