We characterised language samples collected remotely from typically developing three-year-olds by comparing them against independent language samples collected in person from age-matched peers with and without language delays. Forty-eight typically developing, English-learning three-year-olds were administered a picture description task via Zoom. The in-person comparison groups were two sets of independent language samples from age-matched typically developing as well as language-delayed children available on the Child Language Data Exchange System.
View Article and Find Full Text PDFIn previous research, infants' performance on speech perception tasks has been shown to predict later language outcomes, typically vocabulary size. We used Bayesian analyses to model trial-level looking time behavior of individual infants on morphological segmentation experiments. We compared the usefulness of Bayesian estimates and the raw looking time difference measures used in previous studies to predict (a) vocabulary size at 30 months and (b) outcome measures obtained from language samples elicited via a picture description task at 36 months.
View Article and Find Full Text PDFWe describe a corpus of speech taking place between 30 Korean mother-child pairs, divided in three groups of Prelexical ( = 0;08), Early-Lexical ( = 1;02), and Advanced-Lexical ( = 2;03). In addition to the child-directed speech (CDS), this corpus includes two different formalities of adult-directed speech (ADS), i.e.
View Article and Find Full Text PDFThe present study investigates Korean mothers' use of sound symbolism, in particular expressive lengthening and ideophones, in their speech directed to their children. Specifically, we explore whether the frequency and acoustic saliency of sound symbolic words are modulated by the maturity of children's linguistic ability. A total of 36 infant-mother dyads, 12 each belonging to the three groups of preverbal ( = 8-month-old), early speech ( = 13-month-old), and multiword ( = 27-month-old) stage, were recorded in a 40-min free-play session.
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