Background: Early intervention for children identified as late talkers (LTs) at the age of 24 months is still a controversial issue in research and clinical routine. Previous studies have shown inconsistent results regarding predictors of early lexical deficits on school-age outcomes of late-talking toddlers. Methods: In a five-wave follow-up…

The persistence of individual differences in phonological development of 10 normally developing children observed at age one and again at age three was studied. The children differed considerably in rate of vocabulary acquisition and relative phonological maturity and also in their general approach to learning. (Author/JDD)

Word comprehension tests were given to 24 infants at 2-month intervals. Parents of 18 of the infants kept a diary of the children's verbal production. Comprehension scores revealed a vocabulary spurt for some children. The presence of a comprehension spurt was associated with a word production spurt. (BC)

A longitudinal study examining the role of imitation on children's lexical acquisition is discussed here. Findings did not support the view that imitation may enable new lexical items to be acquired, and it is noted that other functions of imitation in language acquisition should be explored. (CHK)

Examined the relationship between infants' early verbal imitation, when the ability to copy behaviors first emerges, and their lexical development during the second year of life. Twenty infants were examined longitudinally at ages 10, 13, 17, and 21 months. Suggests that infants' early imitation of words not in their repertoires predicts and may…

Studied across a 16-month period, young children of deaf parents showed accelerated early language development, on the average producing their first recognizable sign at 8.5 months, their tenth sign at 13.2 months, and their first sign combination at 17.0 months. Findings are inconsistent with previously reported patterns of synchrony between…

Mothers' utterances were measured during interactions with their 13-month-old infants and correlated with measures of infants' productive lexical development at 13 and 24 months. Correlations between maternal measures and infants' lexical development were lower for employed mothers than for mothers who were full-time caregivers. (BC)

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…

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)

Examined continuity in 94 children's vocalization and language development. Acquired data from parent reports of children's vocal and lexical development from 14 to 18 months, and from language development scales administered at 18 months. Found that early vocalizers comprehended and produced more words and suffixes than late vocalizers, and that…

Production data from a longitudinal study of seven children in their first attempts to produce words containing fricatives are presented to illustrate how children use four distinct strategies to approach this relatively difficult class of sounds. The strategies are: (1) favorite sounds--an approach used by a subject who seemed to enjoy playing…

A longitudinal study of three children examined the relation between object permanence and language development. (Author/NCR)

The significance of three mothers' speech for their infants' language development is considered in a continuing longitudinal study. The study began when the children (two females and one male) were 5 and 6 months of age and will continue until the subjects are 3 years old. In the speech data reported the children were from 6 to 18 months of age.…

A study is reported relevant to the relationship between first words learned by children and gestural symbolization under a variety of contextual conditions. It is part of a larger longitudinal study of 32 children at 10, 13, 20, and 27 months of age. The children were seen in three standardized situations for eliciting gestural and vocal symbols:…

This paper explores the relation between the communicative and categorical functions of language and the acquisition of language production. Three major factors in language acquisition are communication, ability for representation and the process of categorization. This paper offers evidence that a sudden and dramatic increase in lexical skill…