Early spontaneous gesture, specifically deictic gesture, predicts subsequent vocabulary development in typically developing (TD) children. Here, we ask whether deictic gesture plays a similar role in predicting later vocabulary size in children with Down Syndrome (DS), who have been shown to have difficulties in speech production, but strengths in…

The current study investigated whether point-accompanying characteristics, like vocalizations and hand shape, differentiate infants' underlying motives of prelinguistic pointing. We elicited imperative (requestive) and declarative (expressive and informative) pointing acts in experimentally controlled situations, and analyzed accompanying…

Using the Multiple Indicator Cluster Survey, language comprehension and production were compared in a sample of 101,250 children aged 2 ; 00 to 9 ; 11 and a focus subsample of 38,845 children aged 2 ; 00 to 4 ; 11 from sixteen under-researched developing nations. In the whole sample, comprehension slightly exceeded production; correlations between…

Oral language skills in the preschool years are predictive of children's later reading success and literacy acquisition, and among these language skills, vocabulary and narrative ability play important roles. Children from low socioeconomic families face risks to their language development and because of threats to these skills it is important to…

When vocalizations of three-month-olds (N=40), experiencing either conversational turn-taking or random responsiveness of an adult, were counted and categorized, results indicated that turn-taking caused changes in the quality of vocal sounds. When the adult maintained a give-and-take pattern, the infants produced a higher ratio of…

Examined children's generalization of familiar verbs to novel events. Findings reveal children aged 1;8 with the largest expressive vocabulary generalized the same verbs to actions with different agents, but not to actions different in outcome or manner of action and children aged 2;2 extended familiar action verbs to other actions different in…

Data from two-year-old children and mothers were collected concerning age at which she began to read to child, frequency of home reading, number of stories read per week, frequency of visits by child to library. Picture-book reading exposure was more strongly related to receptive than expressive language. Age of onset of home reading routines was…