Research on "parentese," the acoustically exaggerated, slower, and higher-pitched speech directed toward infants, has mostly focused on maternal contributions, although it has long been known that fathers also produce parentese. Given recent societal changes in family dynamics, it is necessary to revise these mother-centered models of…

This narrative literature review explores language as a precursor for developing children's psychosocial skills in war-torn areas. By utilising Bronfenbrenner's ecological theory, this study aimed to understand the lifelong consequences of early childhood language deprivation in war-stricken zones, thus suggesting intervention strategies to…

Children's early vocabulary shows sex differences -- with boys having smaller vocabularies than age-comparable girls -- a pattern that becomes evident in both singletons and twins. Twins also use fewer words than their singleton peers. However, we know relatively less about sex differences in early gesturing in singletons or twins, and also how…

Background and Aims: The aim of the current study is to assess the validity of the Cross-linguistic lexical task (CLT) against direct and indirect measures of lexical skills across 2-6 years of age, for a crucial period of lexical development. In addition to evaluating relationships between measures at the level of total score, we also explored…

Child-directed language can support language learning, but how? We addressed two questions: (1) how caregivers prosodically modulated their speech as a function of word familiarity (known or unknown to the child) and accessibility of referent (visually present or absent from the immediate environment); (2) whether such modulations affect…

This study investigated the developmental pattern of early lexical production and composition in Mandarin-speaking children. Forty Mandarin-speaking children and their parents participated in this one-and-a-half-year longitudinal study, and naturalistic samples of parent-to-child speech in toy play were collected when the children were 1;8, 2;2,…

Children tend to produce words earlier when they are connected to a variety of other words along the phonological and semantic dimensions. Though these semantic and phonological connectivity effects have been extensively documented, little is known about their underlying developmental mechanism. One possibility is that learning is driven by…

Toddlers with smaller vocabulary than expected for their age are considered late talkers (LT). This study explored the effects of characteristics of words on vocabulary acquisition of 12- to 24-month-old LT children compared with an age matched (AM) and a vocabulary matched (VM) group of typically developing peers. Using the…

Background: Drawing on the family stress model (Conger and Donnellan in Ann Rev Psychol 58:175-199, 2007. https://doi-org.bibliotheek.ehb.be/10.1146/annurev.psych.58.110405.085551), parenting programs typically support caregivers' nurturing and cognitively stimulating practices to mitigate the effects of poverty on child development, with small-to-moderate…

Children learn words in a social environment, facilitated in part by social cues from caregivers, such as eye-gaze and gesture. A common assumption is that social cues convey either perceptual or social information, depending on the age of the child. In this review of research on word learning and social cues during early childhood, we propose…

Many children on the autism spectrum struggle significantly in their early language development, entering kindergarten with little or no functional speech (Kasari et al., 2014; Rose et al., 2016). Naturalistic developmental behavioral interventions (NDBIs) are a promising approach for supporting early language and communication development for…

Young children's language skills have a significant positive impact on their academic success throughout school, especially on reading and writing performance. The spread of COVID-19, which has resulted in lockdowns, fewer learning hours in kindergarten, and distance learning, might have affected children's exposure to learning opportunities. The…

Children acquire language embedded within the rich social context of interaction. This paper reports on a longitudinal study investigating the developmental relationship between conversational turn-taking and vocabulary growth in English-acquiring children (N = 122) followed between 9 and 24 months. Daylong audio recordings obtained every 3 months…

Young children have an overall preference for child-directed speech (CDS) over adult-directed speech (ADS), and its structural features are thought to facilitate language learning. Many studies have supported these findings, but less is known about processing of CDS at short, sub-second timescales. How do the moment-to-moment dynamics of CDS…

Codeswitching is a common feature of bilingual language practices, yet its impact on word learning is poorly understood. Critically, processing costs associated with codeswitching may extend to learning. Moreover, verbs tend to be more difficult to learn than nouns, and the challenges of learning verbs could compound with processing costs…