This study investigates the emergence and development of the discourse-pragmatic functions of the Japanese subject markers "wa" and "ga" from a usage-based perspective (Tomasello, 2000). The use of each marker in longitudinal speech data for four Japanese children from 1;0 to 3;1 and their parents available in the CHILDES…

The relation of social and linguistic input measures to early vocabulary development was examined in 30 low-income African American mother-infant pairs. Observations were conducted when the child was 0 years, 1 month (0;1), 0;4, 0;8, 1;0, 1;6, and 2;0. Maternal input was coded for word types and tokens, contingent responsiveness, and…

The speech of each of eight children aged 15 to 24 months was monitored in an informal setting and analyzed for the imitation of nonsense words introduced by the experimenter. In a second session, objects were introduced as referents for the nonsense words. Results failed to support the two initial hypotheses, namely that children imitate in part…

Analysis of a one-year-old's speech in two different speech contexts (dialogue vs. crib-monologue) yielded striking patterns of co-occurrences involving verb morphology and forms of self-reference. (Author/CB)

The spontaneous speech of seven children was monitored for "wh" questions. The children were observed longitudinally from about age 24 to 36 months. The pattern of development with regard to the deletion of non-obligatory verbs revealed that "what,""where," and "who" questions presented increasing verb…

This monograph presents a descriptive analysis of the syntactic patterns in 16 corpora of word combinations from 11 infants learning either English (six children), Samoan, Finnish, Hebrew, or Swedish. The mean utterance lengths range up to about 1.7 morpehmes. There are both reanalyses of corpora in the literature and new corpora. The data…

The use of "wh" forms in questions asked by four children was recorded from age 22 to 36 months, and analyzed. In the emergence of "wh" forms, the children first asked identifying questions with "what" and "who," followed in order by (1) "wh" pronominal questions which ask for major sentence…

Investigated how prosodic cues in motherese assisted infants' language acquisition. Infants oriented longer to speech interrupted at clausal boundaries than to matched speech interrupted at within-clause locations. The prosodic qualities of motherese provided infants with cues to units of speech that corresponded to grammatical units of language.…

Longitudinal observation of 12 infants, including measures of child behavior and maternal language and child language, revealed that most subjects acquired a balanced distribution of object labels and social-centered words and phrases. (Author/CB)

Sound-meaning correspondences produced by an infant were studied under conditions of early rampant homonymy (i.e., production by a very young child of a small set of noncontrastive surface forms or phonetic sequences to refer to objects/events that on the basis of adult standards require the production of numerous contrasting surface forms). The…

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…

Examines the timing of partners' talk in mother-infant engagements over infant age to determine whether variations occur in the incidence of the alternating mode. Findings reflect the facilitative effects of covocalization in preverbal infants and the need for the alternating mode with older infants. (31 references) (Author/CK)

The ontogenetic development of human vocal utterances and their role in early interaction processes were studied with a three-month-old baby. Recordings were made of infant vocalizations in the home and the sounds were classified. During a five-minute segment between the mother and infant, the infant produced 59 utterances, 93 percent of which had…

Cross-cultural investigation of the influence of target-language in infant babbling analyzed 1047 vowels produced by 10-month-olds (N=20) from French, English, Cantonese, and Arabic language backgrounds. Results revealed differences among infants across language backgrounds, with the differences paralleling those found in adult speech in the…

An eight-month longitudinal study measuring infants' (N=8) temperament characteristics of activity level, task persistence, and affect and discourse and pragmatic features of their mothers' speech revealed complex interactions between maternal speech and infant temperament. It is argued that nonlinguistic child behaviors may influence maternal…