This qualitative, longitudinal, single-case study analyzes naturalistic interactions in Swedish Sign Language. Multiple interactions took place mainly between a mother and a deaf twin on twelve occasions. The participants' actions and language structure are examined as the child progressed from ten to forty months of age. The results are presented…

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)

Studies the developmental stages deaf children pass through in acquiring the adult forms of pronominal classifiers in American Sign Language. Data were obtained on production, comprehension, and imitation from nine children aged 3 to 11. Complexities of classifier usage influence the learning strategies used. (PJM)

Reports on a study which followed the language development of a hearing son of deaf parents from his seventeenth month to twenty-third month. Various aspects of the child's language acquisition in sign and speech are described, as is his early ability to alternate languages (sign and speech) according to addressee. (SED)