The Early Learner Curriculum and Achievement Record (ELCAR, Greer et al., 2020) is a criterion-referenced curriculum and assessment of children's development of language and social repertoires from the earliest foundational observing responses to advanced verbal repertoires. The developmental cusps or stages identified in the ELCAR have been…

Background: Mothers facilitate their young hearing children's word learning by making reference explicit for novel words through physical designation (e.g., with deictic gestures) and by isolating words in simple syntactic frames. As children's language skills develop, such modifications decrease. Less is known about hearing mothers' support to…

Study supported in part by Research Grant MH-13703-01 from the National Institute of Mental Health.

Describes a study which examined the relationship between mother's speech and the rate of child syntax growth for 22 two-and-a-half-year-old children. Results suggest that linguistic experience does contribute to syntax development but that the relation between linguistic input and language growth is different for different domains of language and…

The verbal interactions of 20 mothers with their children, who were between 1.9 and 5.0 years old, were recorded and analyzed. (SB)

The nature of early games and how they might assist the infant in language acquisition were explored in a longitudinal study of two mother-infant dyads, using video-recordings of their free play. The analysis of appearance and disappearance games was particularly revealing. (EJS)

Examined relationships between early vocabulary composition, early language use, and properties of mothers' child-directed speech at 10 words. Found that, when the effects of the child on the mother at 10 words was controlled, there was a negative correlation between mothers' production of speech illustrating word boundaries and the percentage of…

Dynamic aspects of maternal language instruction and first language learning were explored by observing one- to five-year-old middle-class children with their mothers. (CM)

Analyzes dialogs between mothers and their deaf or hearing children, while controlling for child age and linguistic ability. Results showed that the conversational interaction in mother-child dyads with deaf children was more restricted than that with hearing children. This seemed to be related to the linguistic ability of the deaf children. (SED)

The speech of two mothers to their infants between three and eighteen months was analyzed. Simplicity of speech was about the same at all ages, not showing abrupt change as children began to talk. It is suggested that mothers used a conversational model and changes reflect children's growing conversational ability. (CHK)

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…

To study maternal behaviors as related to social class differences, 30 middle class and 30 working class white mothers were observed at home on two separate days with their 10-month-old firstborn baby girls. Predesignated behaviors which occurred during 5-second intervals were recorded by an observer. Total observation time was 4 hours for each…

The maternal linguistic environments of 12 normal and Down's syndrome (DS) children (ages 1-4 years) were studied and compared, with an eye toward isolating factors that might retard the acquisition of verbal communication in the DS children. (DLS)