Children show less positivity toward gender-nonconforming (GN) than gender-conforming (GC) peers. Yet, little is known about children's reasoning about peers of varying gender expressions, including age-, gender-, and culture-related influences. We investigated how children aged 4- to 5- and 8- to 9-years-old in Hong Kong and Canada (N = 678)…

Despite its importance, studies involving developmental delay remain low in the last 10 years in Latin. The objective of the present study was to estimate and compare the prevalence of developmental delay during 2019-2022 in Mexican children under 5 years of age. This was a cross-sectional study carried out in Nuevo Leon, Mexico (n = 2,951).…

Preschoolers' prosocial behaviours support healthy interpersonal relationships as a component of their social adjustment process. Although several studies have found links between parental marital characteristics and preschoolers' prosocial behaviours, these conclusions were divisive. Therefore, a meta-analysis was conducted to clarify the…

The natural development of static lower limb varus/valgus alignments during early childhood is well understood. However, our understanding of dynamic lower limb frontal plane alignments is limited, and we lack normative descriptions of this phenomenon for both boys and girls. This study investigated dynamic lower limb alignment during…

This study explored the salient characteristics of transactions within parent-child engagement and investigated relationships between transactional characteristics and future identification of autism. The main aims of the study were to (1) examine if parents/children and their initial behaviors impact the length of transaction; (2) determine…

Parental vaccine hesitancy has been a hotly debated issue long before the COVID-19 pandemic. Still, the emergence of a new vaccine during this public health crisis made even pro-vaccine individuals reconsider vaccines for their children. This scoping review was conducted to understand why parents expressed hesitancy towards the COVID-19 vaccine…

Previous research links resting frontal gamma power to key developmental outcomes in young neurotypical (NT) children and infants at risk for language impairment. However, it remains unclear whether gamma power is specifically associated with language or with more general cognitive abilities among young children diagnosed with autism spectrum…

Objective: Physical activity (PA) is essential to promote both optimal physical and emotional health in preschool children. Hence, well-founded PA guidelines are essential. 24-hour Movement Guidelines (which include PA, recreational screen time and sleep) have been established. Thus, this study aimed to explore preschool-aged children's adherence…

The appropriate selection of standardized tests is integral to establishing an accurate early diagnosis and providing timely treatment to optimize language outcomes in young children. However, clinicians sometimes utilize tests that are not validated for this specific purpose. This applied dissertation was designed to investigate the validity of…

Gender and age are salient social categories from early in development. However, whether children's beliefs about gender and age intersect, such that gender stereotypes might be expressed differently when asked about children (compared to adults) has not been investigated. Here, in a preregistered study (N = 297), we examined if young children…

This study investigates the speech rate of Cypriot Greek-speaking children with developmental language disorder (DLD) as well as the effect of age and gender. The participants were 16 children with DLD ages 4 years 11 months to 8 years 1 month and 22 children with typical language development (TLD) ages 4 years 5 months to 8 years 7 months. Both…

Pretend play is one of the most beneficial and complex forms of play that promotes a myriad of children's development. Children's engagement in pretend play can be influenced by their genders, age, material or toys available, and adults' support. Pretend play has been long studied globally, however, there is still a dearth of available information…

Autism Spectrum Disorders (ASD) prevalence has risen globally, with regional variation and sociodemographic disparities affecting diagnosis and intervention. This study examines ASD trends from 1990 to 2018 in California (CA), focusing on sociodemographic factors that may inform policy/interventions. Using CA Department of Public Health birth…

Children's storybooks often contain fantasy elements, from dragons and wizards to anthropomorphic animals that wear clothes, talk, and behave like humans. These elements can impact children's learning from storybooks both positively and negatively, perhaps due in part to their ability to capture children's interest and attention. Prior research…

The purpose of this project was to investigate potential correlates of family life impairment in families of young autistic children. This project incorporated measures of specific child and parent challenges in addition to a commonly used unidimensional measure of autism characteristics. In this way, we could assess whether such challenges…