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…

Background: Language development is critical for children's life chances. Promoting parent-child interactions is suggested as one mechanism to support language development in the early years. However, limited evidence exists for a causal effect of parent-child interactions on children's language development. Methods: Data from the Language in…

In a seminal study, Cameron-Faulkner et al. made two important observations about utterance-level constructions in English child-directed speech (CDS). First, they observed that canonical in/transitive sentences are surprisingly infrequent in child-direct speech (given that SVO word order is often thought to play a key role in the acquisition of…

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…

This study investigated phonological whole-word measures in bilingual Arabic-English speakers to explore how the target approximations influence children's phonological development. To this end, fifteen bilingual Arabic-English speakers and nine monolingual Arabic-speaking children aged 36-48 months (mean = 42) participated in a parent-child…

Do mono- and bilingual children differ in the way they learn novel words in ambiguous settings? Listeners may resolve referential ambiguity by assuming that novel words refer to unknown, rather than known, objects--a response known as the "mutual exclusivity effect." Past research suggested that mono- and bilinguals differ with regard to…

Purpose: This study investigates the acquisition of aspect markers by Mandarin-speaking children with developmental language disorder (DLD) in comparison to typically developing aged-matched (TDA) children and typically developing younger (TDY) children through the aspect hypothesis (AH). Method: A sentence-picture matching task and a priming…

German-speaking children between ages 2 and 3 mostly use the preposition ohne ('without') in an adult-like way, to express the absence of something. In this article we present surprising results from a corpus study suggesting that in this age group, absence can also be expressed using the sequence mit ohne 'with without'. We argue that this…

We investigated toddlers' understanding of the hierarchical syntactic configurations that constrain the referential meanings of reflexives and pronouns. In particular, reflexives must co-refer with the c-commanding antecedent within the local domain (Principle A) (e.g., He[subscript i] washes himself[subscript i]. John[subscript i] knows that…

Children need to learn the demands of their native language in the early vocabulary development phase. In this dynamic process, parental multimodal input may shape neurodevelopmental trajectories while also being tailored by child-related factors. Moving beyond typically characterized group profiles, in this article, we synthesize growing evidence…

Purpose: The Arabic verb system features a nonlinear root and pattern derivational morphology. Previous studies suggest that young Arabic and Hebrew speakers' early verb use is based on semantic complexity rather than derivational morphological structure. The present study examines the role of morphological and semantic complexity in the emergence…

The current study used a multiple baseline across behaviors design to evaluate a rapid coaching intervention for teaching two caregivers to implement naturalistic language interventions (NLIs) with their child with autism. Coaches were preservice behavior analysts completing a personnel preparation program in applied behavior analysis who…

Background: This study explores how family language policies (FLPs) in multilingual homes where isiXhosa is the primary language influence caregiver choices regarding children's language development and education. Objectives: The study aims to give insight on how non-nuclear family structures in a selected sample of Western Cape families are…

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…