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…

Examined longitudinally the handshape aspect of American Sign Language signs in young children of deaf parents. Parents demonstrated on videotape how the children formed the different signs. Findings reveal that four basic handshapes predominated in early sign production, and that the part of the hand involved in contacting a sign's location often…

Sign language production of 14 low-functioning students (ages 9 to 20) with autistic disorder were examined. The location aspect of signs was produced more accurately by subjects than either the handshape or movement aspects. Wide individual differences were observed. Sign vocabulary size and accuracy was correlated with performance on two…

The article gives an example of how, even though an individual's capacity to use or to learn a spoken language may be significantly impaired by brain damage, the ability to acquire a non-oral language system may remain intact. (Author/NCR)