A longitudinal study followed the language acquisition of three deaf infants. Analysis of videotapes recorded in the child's home during informal play was performed in terms of communicative gestures. Results revealed that Ss used a very limited number of hand configurations, locations for signs, and hand and arm movements. Analysis of the…

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…

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 review of research on language development of hearing children of deaf parents identified three areas of focus: (1) oral language development; (2) sign language development; and (3) mode of communication--oral and/or manual. Areas of future study are suggested. (Author/DB)