Research suggests that girls acquire language faster than boys, with gender differences most pronounced in vocabulary acquisition during early childhood. This study examines the role of gender in the acquisition of vocabulary and morphosyntax in Palestinian Arabic-speaking children aged 18 to 36 months. Using the Palestinian Arabic Communicative…

We examined the evolution of social pretend play in toddlers and tested whether children's age, gender, and language abilities were associated with changes in social pretend play over time. We employed a unique observational data set that followed 28 children (M[subscript age] = 27 months old; 57% boys) with each of two unfamiliar peers over 18…

Multiple domains develop simultaneously and interact throughout infancy and early childhood. Although relationships between motor and language skills have been examined cross-sectionally during the first three years of life, little is known regarding the individual factors that influence the development of these domains as well as the relationship…

During human childhood, brain development and body growth compete for limited metabolic resources, resulting in a trade-off where energy allocated to brain development can decrease as body growth accelerates. This preregistered study explores the relationship between language skills, serving as a proxy for brain development, and body mass index at…

The number of older siblings a child has is negatively correlated with the child's verbal skills, an effect that is well known in the literature. However, few studies have examined the effect of older siblings' sex, of the age gap between siblings, of having foreign-speaking parents, as well as the mediating role of parental interaction. Using…

This study explored associations between mothers' language teaching practices and children's language skills concurrently and longitudinally, while also taking into account the children's sex and mothers' education. Estonian mothers of 76 children reported their language teaching practices at child ages 3;0 and 4;0. Children's language…

We compared language comprehension and production across the second year of life in children of clinically depressed mothers who later remitted with children of nondepressed mothers. Altogether, 157 mother-child dyads participated: 46 with mothers diagnosed at infant age 5 months as having major, minor, or other depressive disorders who fully…

There is considerable controversy over the factors that shape infants' developing knowledge of grammar. Work with artificial languages suggests that infants' ability to track statistical regularities within the speech they hear could, in principle, support grammatical development. However, little work has tested whether infants' performance on…

The aim of this study was to explore the relationship between paternal attitudes, father-child activities, socioeconomic and sociodemographic factors, and the early child productive vocabulary. We also wanted to study if paternal factors affected boys' and girls' language acquisition differently. Our data consisted of 722 fathers and their…

Purpose: Narrative skill, a child's ability to create a temporally sequenced account of an experience or event, is considered an important domain of children's language development. Narrative skill is strongly predictive of later language and literacy and is emphasized in curricula and educational standards. However, the need to transcribe a…

Purpose: Narrative skill, a child's ability to create a temporally sequenced account of an experience or event, is considered an important domain of children's language development. Narrative skill is strongly predictive of later language and literacy and is emphasized in curricula and educational standards. However, the need to transcribe a…

Limited studies exist that connect using signed language with mathematics performance of deaf and hard of hearing children. In the present study, the authors examined 257 participants and compared their results on the Northwest Evaluation Association: Measures of Academic Progress (NWEA MAP) to their results on an assessment of American Sign…

This article presents data on lexical development of 881 Israeli Hebrew-speaking monolingual toddlers ages 1;0 to 2;0. A Web-based version of the Hebrew MacArthur-Bates Communicative Development Inventories (H-MB-CDI) was used for data collection. Growth curves for expressive vocabulary, receptive vocabulary, actions and gestures were…

The focus of this article is Faroese children's early vocabulary acquisition using a Faroese adaptation of the MacArthur-Bates Communicative Development Inventories (MBCDI) parental report. The study is a population-based cross-sectional study including 1135 children aged 8-36 months. The article has two objectives: the first is to describe the…

Parental reports are a widely-used source of information about infants' and toddlers' communicative skills, but parent-report instruments valid for children older than 30 months are less known. This study explored individual variability in children's communicative skills at the age of 3;0 via parental reports using the Estonian (E) CDI-III. The…