This study employed a three-level meta-analytic approach to investigate the relationship between parental language input and children's language outcomes, as well as the moderating effects of relevant variables. The analysis incorporated 41 original studies, including 160 effect sizes, with a sample size of 5,563 children. Results from the random…

The present study compared the infant's tendency in the first year of life to produce clusters of particular vocal types (squeals, vocants, and growls) in typically developing (TD) and autistic infants. Vocal clustering provides evidence of vocal category formation and may establish a foundation for speech development. Specifically, we compared…

Children's early grammatical constructions, e.g., SVO, exhibit a learning curve with cumulative verb types (CVT) increasing exponentially. According to Ninio (2006), the fact that learning curves, though nonlinear, can be modelled by a continuous regression suggests instant generalisation. Moreover, differences in initial verbs across children…

We compare two frameworks for the segmentation of words in child-directed speech, PHOCUS and MULTICUE. PHOCUS is driven by lexical recognition, whereas MULTICUE combines sub-lexical properties to make boundary decisions, representing differing views of speech processing. We replicate these frameworks, perform novel benchmarking and confirm that…

Early vocabulary development benefits from diverse lexical exposures within children's language environment. However, the influence of lexical diversity on children as they enter middle childhood and are exposed to multimodal language inputs remains unclear. This study evaluates global and local aspects of lexical diversity in three…

While much work has emphasized the role of the environment in language learning, research equally reports consistent effects of the child's knowledge, in particular, the words known to individual children, in steering further lexical development. Much of this work is based on cross-sectional data, assuming that the words typically known to…

Metaphors are key to how children conceptualise the world around them and how they engage socially and educationally. This study investigated metaphor comprehension in typically developing Arabic-speaking children aged 3;01-6;07. Eighty-seven children were administered a newly developed task containing 20 narrated stories and were asked to point…

To see whether communicative-based multimodal skills (compared to non-communicative motor skills) predicted complex language skills, this study examined the predictive power of multimodal and motor skills on narrative and expressive pragmatic abilities across two groups. Participants were children with typical development (N = 88, M[subscript age]…

Across two studies we explore how individual and dyadic factors influence children's (M[subscript age] = 61 months; 52% male; 55% White British) use of mental state talk (MST) with peers during shared play. Results from actor-partner interdependence modelling (APIM; n = 190 children) indicate that children's MST use is significantly linked to the…

Children with specific learning disorder (SLD) have poor academic skills, but they also experience difficulties with their peers, including an inability to recognize interpersonal conflict, infer emotion, and resolve social conflict. In addition, children with SLD are known to have problems with language. The importance of language to social…

Both classic thought experiments and recent empirical evidence suggest that children frequently encounter new words whose meanings are underdetermined by the extralinguistic contexts in which they occur. The role that these referentially ambiguous events play in children's word learning is central to ongoing debates in the field. Do children learn…

Usage-based theories of children's syntactic acquisition (e.g., Tomasello, 2000a) predict that children's abstract lexical categories emerge from their experience with particular words in constructions in their input. Because modifiers in English are almost always prenominal, children might initially treat adjectives similarly to nouns when used…

Introduction: It is well documented that preschoolers with DLD produce first instances of sentential complement clause sentences later than same-age peers with typical language. However, it remains unknown whether children with DLD are limited in their production of a variety of sentential complement clause sentences. Aims: Using a sentence…

Purpose: Previous studies documenting longitudinal linguistic outcomes of children with specific language impairment (SLI) compared to their age peers focus on the property of obligatory finiteness marking in sentences across the age span of 5-18 years. This study evaluates tag questions as syntactically complex sentences that extend the demands…

Numerous developmental findings suggest that infants and toddlers engage predictive processing during language comprehension. However, a significant limitation of this research is that associative (bottom-up) and predictive (top-down) explanations are not readily differentiated. Following adult studies that varied predictiveness relative to…