An 11-year-old nonverbal boy diagnosed autistic was trained to communicate wants and needs with manual signs. Sign training in the corner of the classroom had no effect on generalization or maladaptive responses, while training in the natural setting was functionally related both to use of signs across the school day and dramatic reductions in…

Six profoundly mentally retarded adults were trained to use 10 signs. Two Ss learned all signs with 100% accuracy without verbal prompting; four Ss learned seven to eight signs, varying with stimulus cue and setting. It was suggested that the four Ss may not have possessed adequate cognitive ability. (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)

A severely retarded adolescent boy who had not acquired oral expression skills was taught five manual signs to express a food preference. A multiple baseline design employed across behaviors demonstrated that instruction was effective for all five signs. (Author)

Presents evidence showing that there is no need, in planning or implementing a language program for a retarded child, to exclude nonoral communication. Concludes that consistently supplementing spoken language with nonoral communication systems will not inhibit spoken language development but may well facilitate spoken language by providing a…

The relative effectiveness of total communication and oral communication training in a parent-assisted, home-based language intervention program was studied with 15 Down's syndrome children, 18-36 months old. (Author/SEW)

The effectiveness and efficiency of two instructional prompting procedures, progressive time delay and the system of least prompts, in teaching manual signs was evaluated with three moderately or severely retarded adolescents with additional handicaps. Results indicated both procedures were effective though the time delay method appeared to be…

A study of three hearing, moderately handicapped children (seven and eight years old) was undertaken in order to examine the acquisition, generalization, and maintenance of sign language production with this population. (PHR)