Autism researchers often use mand training paired with direct trial instruction (DTI) as an effective way to increase communication skills for young children with autism. However, these methods often occur in clinical settings. In this case study, we trained a parent to complete a DTI verbal mand intervention with her son with autism. She…

Studied across a 16-month period, young children of deaf parents showed accelerated early language development, on the average producing their first recognizable sign at 8.5 months, their tenth sign at 13.2 months, and their first sign combination at 17.0 months. Findings are inconsistent with previously reported patterns of synchrony between…

This paper describes the linguistic development of two hearing sons of deaf parents. Both were exposed to an early language environment different from that of the average hearing child. At the start of the study, the boys were aged 3 years, 9 months, and 1 year, 8 months, respectively. When first observed, the older child performed well below age…

The question is addressed whether a child would develop a communication system if a conventional linguistic model is absent. Six congenitally deaf children, who were not exposed to Sign Language, were observed and videotaped at play in their homes at intervals of one to three months. The children ranged in age from 1 year, 5 months to 4 years, 1…

Examined the effect over time of the use of sign language in a two-year period, including preschool and ending with kindergarten, on hearing children's language development. Found vocabulary gains, no evidence of memory decay over time, and positive evidence for inclusion of sign language instruction in early childhood education. (SD)

This study investigated the effectiveness of a natural environment language training procedure that combined the mand-model procedure and the time delay procedure for the acquisition of noun signs and for the spontaneous use of the signs acquired. One autistic boy, aged 5 years, 4 months with no verbal imitation skills and few movement imitation…