This study investigates whether the earliest words children choose to say are mainly words containing sounds they can produce (cf. 'phonological dominance' hypotheses), or whether children choose words without regard to their phonological characteristics (cf. 'lexical dominance' hypotheses). Phonological properties of words in spontaneous speech…

This study tested the claim of input-based accounts of language acquisition that children's inflectional errors reflect competition between different forms of the same verb in memory. In order to distinguish this claim from the claim that inflectional errors reflect the use of a morphosyntactic default, we focused on the Japanese verb system,…

In this study, the author examined the effects of training four parents from low-socioeconomic environments to use Enhanced Milieu Teaching (EMT) with their young children with language impairment. The investigator used a modified Teach-Model-Coach-Review method to teach parents to use the following EMT strategies during 8-10 individualized,…

Recent research suggests that infants tend to add words to their vocabulary that are semantically related to other known words, though it is not clear why this pattern emerges. In this paper, we explore whether infants leverage their existing vocabulary and semantic knowledge when interpreting novel label-object mappings in real time. We initially…

Purpose: There has been increased interest in using telepractice for involving more diverse children in research and clinical services, as well as when in-person assessment is challenging, such as during COVID-19. Little is known, however, about the feasibility, reliability, and validity of language samples when conducted via telepractice. Method:…

Purpose: This study was conducted in a large Midwestern metropolitan area to examine the language environments at home and in center-based childcare for young children who are living in poverty. We compared child language use and exposure in the home and childcare settings using extended observations with automated Language Environment Analysis to…

With the increasing prevalence of autism spectrum disorder (ASD), clinicians and schools are receiving a larger number of assessment referrals for eligibility or diagnostic clarification of ASD in children who are deaf and hard of hearing (D/HH). Meeting this increasing demand is often difficult given not all assessment professionals seek…

Perceptual representations of objects and approximate magnitudes are often invoked as building blocks that children combine to acquire the positive integers. Systems of numerical perception are either assumed to contain the logical foundations of arithmetic innately, or to supply the basis for their induction. I propose an alternative to this…

Children undergo gradual progression in their ability to differentiate correct and incorrect pronunciations of words, a process that is crucial to establishing a native vocabulary. For the most part, the development of mature phonological representations has been researched by investigating children's sensitivity to consonant and vowel variation,…

An infant's vocal capacity develops significantly during the first year of life. Research suggests early measures of pre-speech development, such as canonical babbling and volubility, can differentiate typical versus disordered development. This study offers a new contribution by comparing early vocal development in 10 infants with Fragile X…

Most research on the mechanisms underlying referential mapping has assumed that learning occurs in ostensive contexts, where label and referent co-­occur, and that form and meaning are linked by arbitrary convention alone. In the present study, we focus on "iconicity" in language, i.e. resemblance relationships between form and meaning,…

In the current study, we describe a study of the Internet-based Parent-implemented Communication Strategies-Storybook (i-PiCSS). I-PiCSS is an intervention program designed to train and coach parents to use evidence-based naturalistic communication teaching (NCT) strategies (i.e., modeling, mand-model, and time delay) and reading techniques while…

Over the past 2 decades, a growing number of randomised controlled trials have assessed the impact on children's language skills of interventions encouraging parents to read books to their offspring. We present the results of a meta-analysis of the impact of 30 such interventions. Results indicate that they are often ineffective, and that only one…

Increased international marriages and transnational mobility have prompted more children to grow up learning more than two languages simultaneously. However, despite well-known benefits of multilingualism, helping a growing number of trilingual children to reach their full potential has been challenging in the US, as prevalent monolingual policies…

We examined differences between children with autism spectrum disorder and typically developing children over an 8-month period in: (a) longitudinal associations between expressive and receptive vocabulary and (b) the extent to which caregiver utterances provided within an "optimal" engagement state mediated the pathway from early…