A longitudinal study investigated how a hearing child of deaf parents simultaneously acquired American Sign Language and spoken English. Neither of two unique properties of signed language (personal pronouns or "negative" sign markers) facilitated acquisition of English, suggesting that children's acquisition of grammar is relatively…

Longitudinal study of a deaf child's (with deaf signing and speaking parents) speech functions revealed that the child, before age three, rarely attempted speech imitation. By age five, the child had acquired new words through speechreading and had adjusted language modes to listener needs for flexible communication, and speech behavior assumed…

Reports on an experiment describing the lexical development of a hearing child with a deaf mother and hearing father. Data confirm previous findings that (1) sign emerges before spoken word, (2) acquisition stages are similar in ASL and spoken English, and (3) the child initially develops one lexical system. (Author/AM)

Some 76 hearing children in prekindergarten classes, half receiving sign instruction and half not, were tested on English vocabulary acquisition. Children who received the sign instruction scored significantly higher on the Peabody Picture Vocabulary Test than children receiving sign instruction. (Contains 15 references.) (Author/LB)