Children learn language by listening to speech from caregivers around them. However, the type and quantity of speech input that children are exposed to change throughout early childhood in ways that are poorly understood due to the small samples (few participants, limited hours of observation) typically available in developmental psychology. Here…

Vocabulary knowledge greatly affects writing performance (Staehr in Lang Learn J 36:139-152, 2008; Johnson in Tesol J 7:700-715 2016), but little is known about the relative contribution of different dimensions of vocabulary knowledge to reading-to-write performance. The current study attempted to investigates the contribution of…

Consonants and vowels differentially contribute to lexical acquisition. From 8 months on, infants' preferential reliance on consonants has been shown to predict their lexical outcome. Here, the predictive value of German-learning infants' (n = 58, 29 girls, 29 boys) trajectories of consonant and vowel perception, indicated by the…

This study investigates the similarities and differences between Hong Kong kindergarteners' shyness and social anxiety and their possible relations with social emotional adjustment and the development of receptive language abilities. Data were collected from three kindergartens, with 71 children (mean age = 52.6 months, SD = 7.28; 48% boys) and…

The purpose of this study was to examine the memory abilities of bilingual children with and without developmental language disorder (DLD). We compare groups across short-term, working memory, and declarative long-term systems in the verbal and nonverbal domains. The study also analyzes how memory abilities are related to children's expressive and…

Joint attention and imitation are thought to facilitate a developmental cascade of language and social communication skills. Delays in developing these skills may affect the quality of children's social interactions and subsequent language development. We examined how responding to joint attention and object imitation skills predicted rate of…

The aim of this study was to investigate individual differences in mathematical problem-solving among 3- to 5-year-old children (N = 328; n[subscript 3-year-olds] = 115, n[subscript 4-year-olds] = 167, n[subscript 5-year-olds] = 46). First, we examined the extent to which children in this age group were able to solve open and closed non-routine…

Language mindsets and L2 willingness to communicate (L2 WTC) are closely related and have contributed greatly to learners' L2 learning achievements under the SLA paradigm. However, relatively less attention has been given to the influence of language mindsets and L2 WTC on L2 pragmatic acquisition. This paper aims to examine the potential…

Numerous studies have evidenced the relationship between musical rhythm and language performances, derived from temporal acoustic signal processing. This relationship might be affected by different language experiences. Receptive and expressive vocabulary knowledge, phonological awareness, and musical rhythm perception and production were examined…

Observational studies have shown that caregiver sensitivity predicts child language skills. These studies, however, have entirely relied on between-family designs (single parent-child dyad per family), which cannot rule out the contribution of shared family confounds (e.g., genetics, books in home). The current study investigates whether observed…

Children's vocabulary ability at school entry is highly variable and predictive of later language and literacy outcomes. Sleep is potentially useful in understanding and explaining that variability, with sleep patterns being predictive of global trajectories of language acquisition. Here, we looked to replicate and extend these findings. Data from…

Background: Executive function (EF) is significantly associated with reading comprehension outcomes, yet the interaction between EF and critical language skills (including vocabulary, morphological awareness (MA) and syntactic knowledge), across these levels of reading comprehension (literal, inferential and evaluative comprehension) has rarely…

This study investigates how individual-level factors contribute to classroom engagement variations of boys and girls across the elementary school years. Classroom engagement was assessed four times between the ages of 7 and 12 years in a large, representative population-based sample (N = 877) using latent growth modeling. Predictors included the…

Purpose: This study evaluates the extent to which automated indices of vocal development are stable and valid for predicting language in infants at increased familial likelihood for autism and/or language impairment and relatively lower likelihood infants. Method: A group of infants with autistic siblings (Sibs-autism; 20 infants) and a comparison…

In spite of the proliferation of research studies on vocabulary knowledge, investigating the relationship between self-regulation, vocabulary size, and collocational knowledge among English as a Foreign Language (EFL) learners has received scant attention. The current study aimed to investigate whether vocabulary and collocation size can explain…