Analysis of the communicative skills of a nine-year-old deaf boy with minimal schooling showed pantomiming and gestures to be his major mode of communication. Certain semantic patterns prevailed. Use of left or right hand also had semantic correlates. Formal and idiosynacratic signs were discovered in the boy's vocabulary. (Author/PJM)

For the two children studied and in the situations observed and recorded, important conditions for the emergence of language in the ontogeny of communication appear to be: (1) interaction with caretaking adults, (2) shared focal attention, and (3) specificity of reference. (Author)

Face-to-face communication makes up only a small proportion of an infant's diurnal transactions with his environment, but it is viewed as crucial to his total development. Research was conducted in which adult and infant behaviors were videotaped, and their interactions were analyzed. (Author/HP)

Studies the simultaneous language development in American Sign Language and spoken English by a hearing girl. Findings show: (1) a mixture of oral and manual babbling, (2) a code-switching ability across modalities, and (3) a single syntactic system incorporating rules from both languages but with two separate lexicons. (Author/PJM)

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)