The mental health and well-being of children and adolescents are critical public health concerns globally. This cross-sectional study analysed nationally representative data from the combined 2016-2022 National Survey of Children's Health (n = 239,534) to produce estimates of parent-reported diagnoses of children's anxiety, depression and…

This study evaluates the Children's Worlds Psychological Well-Being Scale (CW-PSWBS) within a diverse international cohort of children aged 10 and 12, utilising Classical Test Theory (CTT) and Item Response Theory (IRT) methodologies. Through a detailed psychometric analysis, this research assesses the CW-PSWBS's structural integrity, focusing on…

During adolescence, increases in pubertal hormones lead to reproductive maturity as well as changes in cognitive development. Yet, little is known about how to best characterize interindividual differences in hormone concentrations. The goal of the current study was to examine the antecedents and consequences of membership in empirically derived…

This exploratory report investigates how children, aged 6- to 12-years, reason about divisions in labour. It focuses on understanding when in development children might associate higher status groups with intellectual as opposed to physical labour. It explores this question by introducing a sample of mostly mid/high-SES American children to a…

Children comprehend iconic gestures relatively later than deictic gestures. Previous research with English-learning children indicated that they could comprehend iconic gestures at 26 months, a pattern whose extension to other languages is not yet known. The present study examined Turkish-learning children's iconic gesture comprehension and its…

This study investigated whether familiarity and expertise of a dissenter would lessen the trust of a three-person majority among preschoolers in a Chinese sample. The results indicated that preschoolers preferred to trust a majority rather than a stranger dissenter. However, when familiarity and expertise of the dissenter were manipulated in the…

Delay of gratification tasks have an impressive predictive value for various outcomes and are designed to measure self-regulation. Since many behavioural and psychological conditions in children are related to limitations in self-regulation, the extent to which delay tasks can be used as a screening for the detection of psychopathology is…

Previous studies have shown that social exclusion can have negative effects on the well-being of children and adolescents. However, there is inconsistent evidence regarding how the impact of social exclusion changes with age. This study used the Cyberball paradigm to investigate the effects of exclusion and subsequent inclusion on primary needs…

Previous research on children's knowledge about the mind has primarily focused on their comprehension of false beliefs, leaving the conceptualization of thoughts and thinking less explored. To address this gap, we developed a new assessment tool, the interview about the mind (IaM), to assess children's understanding of the mind. Two studies…

This study examines the impact of manipulation on the performance of 3.5- and 4-year-old children in the Give-N task with concrete representations (sets of bottle caps and pictures of dots) and spoken number words. In this task, children were asked to give a certain number of items (cookies) using the three representational formats. Children were…

This study explored the development of theory of mind (ToM) in 80 Swedish-speaking 3- to 5-year-olds, a previously unstudied language and culture. The ToM scale was translated and tested in a Swedish context. The results show that the ToM abilities improve significantly with age. In addition, a gender difference was observed for the whole sample,…

Temporal differences of neurodevelopmental milestones' achievement are commonly taken into account in preterm infant assessment during the first year of life, especially when minor or none neurological signs arise from clinical examination. The influence of gender on neurodevelopment in preterm infants was examined by a milestones-based…

The negative health effects of cigarette smoking during pregnancy (SDP) on the foetus are well known. Despite previous reports of poor cognitive performance in offspring exposed to SDP, few studies specifically consider language outcomes according to maternal smoking. In this study, we systematically review the literature to assess the…

Many studies have found that a majority of boys and girls prefer to play with toys that are typed to their own gender but there is still uncertainty about the age at which such sex differences first appear, and under what conditions. Applying a standardized research protocol and using a selection of gender-typed toys, we observed the toy…

The purpose of this study was to investigate the contributions of general cognitive skills (working memory, inhibition, and reasoning) and metalinguistic awareness to young children's character reading. One hundred eighty-nine Chinese children, aged from 60 to 78 months, were administered with measures of character recognition, language,…