Describe studies in which day-long recordings were made of nine-year-old children's spontaneous speech. Results indicate that: (1) children aged five to 15 speak some 20,000 words of discourse per day in about two to three hours of pure speaking time; (2) they have an active vocabulary of some 3,000 word-form types. (SED)

Argues that the measures of content and style of maternal talk used by the Murray and Trevarthen (1986) study of temporal patterning during vocal engagements did not directly indicate the ways in which the behaviors of the partners (mothers and infants) were combined on a moment-to-moment basis. (Author/CB)

This article looks into why infants learn to talk, using a series of illustrative proposals as to the short- and long-term consequences to the infant behaviors that lead to linguistic competence. The goal of the article is to encourage investigation of behavioral dispositions that nudge the child toward proficiency in the use of the spoken…

Examines the phonetic patterns and linguistic development of an infant who was tracheostomized during the period that infants normally begin to produce syllabic vocalization. It was found that the infant had developed only a tenth of the canonical syllables expected in normally developing infants, a small inventory of consonant-like segments, and…

Vocabulary development of three children, aged 1;6 to 1;8, who had not yet begun to evidence a vocabulary spurt was followed to determine if these children would eventually have a vocabulary spurt. Results of the study are discussed in the context of the argument that a substantial proportion of children never evidence a vocabulary spurt. (JL)

Mental terms in mothers' and their childrens' speech at two and three years were studied to examine relationships between maternal and child use. Nineteen mother and child dyads were videotaped for 1 hour on each of 2 days when children were 2;0 and again for 2 1-hour sessions on separate days when they were 3;0. Mental terms were noted. (JL)

This study examined age differences in the extent to which children infer and use a speaker's interpersonal goal to understand speech acts and to examine age differences in the extent to which children select responses that carry implications appropriate to the speaker's interpersonal goal. (15 references) (JL)

Examines speech samples of a boy 2;4 to 2;11 to determine the relationship between speech disturbances and language production process development. Disfluencies were randomly distributed during the first half of the observation period, then concentrated in function words and sentence initial words, reflecting an emerging speech component dedicated…

Presents a quantitative study of children's noun plural overregularizations on recent comparisons of connectionist and symbolic models of language. The speech of 10 English-speaking children aged 1;3 to 5;2 were analyzed. Results pose challenges to connectionist models, but are consistent with the blocking-and-retrieval-failure model in which…

Varying definitions of formulas, or apparently nonproductive utterances in children's speech, are compared, and criteria for formula recognition are reviewed. A preference rule system is proposed, which distinguishes conditions for formula recognition. Formulas found in the data of one child acquiring Irish are examined. (29 references) (KM)

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)

Examined whether infants imitate the vocal pitch characteristics of adult caregivers and differentially adjust their vocal pitch or fundamental frequency toward that of their caregivers. Data are presented from a longitudinal case study of an infant recorded over several months, interacting with each parent. The infant did not demonstrate…

Word learning by young children is viewed as a problem deriving from the use of forms of discourse texts. Uses of causal and temporal terms in private speech by a child studied longitudinally from 1;9 to 3;0 are analyzed from this perspective. (Contains 38 references.) (JL)

Describes a study which sought to determine the developmental stage at which children begin to differentiate specific and neutral contingent queries. The study manipulated the familiarity of the adult listener by having each of the 22 children interact both with the mother and with an unfamiliar adult experimenter. (SED)

Bilingual case study of infant acquiring Spanish and English from birth to 1;10 is used to address whether young bilinguals differentiate between their languages based on language choice. Daily diary records and weekly video recordings in the two language contexts were used to construct the child's lexicon and establish that translation…