In this article, we provide an overview of the last twenty years of research on Indigenous sign languages, deaf community sign languages, co-speech gesture, and multimodal communication in the Australian context. From a global perspective, research on sign languages and on the gestures that normally accompany speech has been used as the basis for…

This study investigates 3- to 5-year-old children's sensitivity to lexical, intonational and gestural information in the comprehension of speaker uncertainty. Most previous studies on children's understanding of speaker certainty and uncertainty across languages have focused on the comprehension of lexical markers, and little is known about the…

Across a diverse range of languages, children proceed through similar stages in their production of causal language: their initial verbs lack internal causal structure, followed by a period during which they produce causative overgeneralizations, indicating knowledge of a productive causative rule. We asked in this study whether a child not…

An analysis was made of the correspondence between intonation and the larger and smaller movements accompanying two-syllable and longer utterances. Synchrony between peaks of intonation and movement pattern was found and is used to argue for a performative basis for early two-word productions. (Author/EJS)

This study explores the role that gesture plays in the earliest stages of language learning. A description is provided of how one-word speakers use gesture in combination in combination with speech in their spontaneous communications and interpret gesture presented in combination with speech in an experimental situation. (JL)

Research is reported which investigated the ability of four-month-old hearing infants to discriminate between gestures derived from American Sign Language. Findings show that infants possess the perceptual abilities to differentiate between signs that differ solely in terms of contrasts along a single underlying movement direction. (SED)

Idioglossia is a private communication system, most commonly occurring in twins. It also occurs between singletons and between other siblings of multiple births. These communication systems range from manual gestures to a fully developed vocal language with its own grammar. The literature of idioglossia is scanty and largely anecdotal. Much of the…

This study investigated whether mothers' responses to their infants' gestures play a role in their infants' vocabulary development. Eight infants were observed interacting at home with their mothers on 2 occasions, when the infants were 10 to 12 months old, and 16 to 18 months old. Videotapes of the observations were transcribed and coded for…

A framework which considers speech and language as separate entities in a symbiotic relationship is presented, and basic questions are raised concerning how speech and language function together and what their reciprocal effects are. Based on the notion that speech and language are independent, various examples of speech without language and of…

The inductivist model of language acquisition was tested by comparing the linguistic development of impulsive kindergarten children with that of reflective children, who, in general, make fewer errors on inductive reasoning tasks. The 81 children sampled were tested with the Matching Familiar Figures Test and with measures of syntactic and…

The achievement of labeling was investigated in a longitudinal study of one mother-infant dyad, using video-recordings and analysis of joint picture-book reading. Participating in a ritualized dialogue, rather than imitation, was found to be the major mechanism through which labeling was achieved. (Author/SW)

Presents a longitudinal study of six children which investigates the relationship between language development and the development of nonverbal representation. Concludes that the results suggest an interrelational hypothesis and proposes an interpretation in terms of reciprocal interaction between the two parameters. (Author/MES)

Two issues in language development are explored--the emergence of the ability to communicate and the relationship between emerging forms and functions. Solutions to these problems involve the notion of interpretation and depend on the fact that adults interpret children's behaviors as if they were meaningful according to the adult system. The…

Examined oset and acquisition of language comprehension and production in a language delayed child through analysis of a daily diary. In addition to confirming that the gap between comprehension and production was greater than that found in normal children, data from these observations can also be used to add to a general understanding of the…

Describes code shifting study in communicative behavior of hearing child interacting with deaf child and mother, both of whom signed. Hearing child knew signing, but did not sign at home. Although communication change occurred, code shifting was influenced more by motivational variables and by hearing child's own flexibility with language than by…