Reports an 18-month longitudinal study of sign language acquisition in very young children of deaf parents. Results indicate that some revision of views on cognitive prerequisites for language is necessary. Implications for nonspeaking populations and for developmental theory are discussed. Reviews briefly sign language training programs for…

Eighty-four sign glosses in the elementary-aged lexicon and 87 in the adolescent/adult lexicon for language-impaired severely mentally retarded individuals were examined for usefulness in terms of eight variables. Concept concreteness and word frequency were significantly represented for adolescent/adult lexicons but not for elementary lexicons.…

The study involving 60 undergraduate students investigated sign language as a function of sign translucency (the perceived relationship between a sign and its referent) and referential concreteness. Translucency and concreteness levels were varied and naive sign language learners attempted to learn a list of sign referent pairs. Results indicated…

Results of a study involving 14 three- to 11-year-olds with language impairments revealed that, for both functor acquisition and functor recall, speech and sign training was superior to speech training. Type of functor trained was also important, with prepositions faring better than pronouns. (Author/CL)

Five severely language disordered children (20 months to 11 years old) and their parents participated in a 10-week sign training program. Group parent training sessions were conducted in four phases and individual training was provided on a weekly basis. All children showed substantial gains in use of productive language. (Author/CL)

Sixty minimally verbal autistic children (mean age five years) were exposed to one of four language training conditions: speech alone, sign alone, or simultaneous or alternate presentation of speech and sign. Regardless of training condition, pretreatment verbal imitation ability positively predicted the size of child-initiated spoken vocabulary…

The study assessed the use of Blissymbols in the spoken and signed language development of 10 school-aged (mean age 11.5 years) children with developmental dysphasia of whom four also were mildly retarded. The students' expressive abilities in signed and spoken words were initially assessed before the Bliss teaching began, and then again after 1…

Nine children suffering from Landau-Kleffner (L-K) syndrome and 25 children with developmental expressive disorders were tested for comprehension of English grammatical structures in spoken, written, and signed language modalities. L-K children demonstrated comprehension problems in all three language modalities and tended to treat language as…

Seven papers review research in speech-language pathology and audiology. K. Polzer et al. describe an investigation of sign language therapy for the severely language impaired. S. Dworetsky and L. Clark analyze the phonemic and nonphonemic error patterns in five nonverbal and five verbal oral apraxic adults. The performance of three language…

A language training approach employing a multimodality receptive language program was used with eight retarded preschool children to increase receptive language development and to stimulate verbal (expressive) language behavior. Day activity center teachers worked with the Ss three times weekly for 7 months using the Minnesota Early Language…

Reviews a study on deaf native sign language. Indicates that the modification of natural perceptual categories after language acquisition is not bound to a particular transmission modality, but rather can be a more general consequence of acquiring a formal linguistic system. (Author/SK)

Down Syndrome children exhibit language delays, particularly in expressive abilities, more severe than would be anticipated from their cognitive level alone. This research project sought to develop a procedure for introducing total communication into the home environment of prelinguistic Down Syndrome infants and for comparing the relative…