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…

On a daily basis, children make decisions about how to negotiate their physical environment. Sometimes they engage in physical tasks that involve risk, requiring them to judge the safety of how to negotiate the environment safely. Individual differences in children's age, sex, physical size, and personality may impact those decisions. We used…

Recent studies have focused on predictors of exclusionary practices in early childhood, but few have examined what happens after a child is removed from care. Families' difficulty finding new care is complicated by the shortages of convenient, affordable and quality childcare in the United States. Using online surveys, we gathered data from…

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…

As women are underrepresented in STEM and the home learning environment has been associated with children's science knowledge, this study focuses on the home science environment as an area where gender differences may occur. To identify potential antecedents of gender differences, this study examined whether there were mean differences in the…

Cognitive tasks are seldom evaluated on their ability to provide valid and reliable measurements of the construct they intend to measure. This scarcity of psychometric evaluations makes it challenging to evaluate replications of experimental effects and to relate performance in cognitive tasks to other constructs of interest. In developmental…

Selecting whose words to trust profoundly impacts children's learning behaviours. This study investigated Western and East Asian children's trust preferences for informants based on social dominance and its potential association with cultural factors. Sixty-six European American children in the United States (M = 5.44 years, SD = 0.80 years) and…

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…

Recent research on advanced theory of mind (ToM) has questioned the extent to which existing ToM measures capture a single construct, particularly for groups understudied in developmental research. The present study examined the factor structure of one of the most commonly used advanced ToM measures, the Strange Stories task, in samples of low-…

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…

The home numeracy environment is an essential construct that helps explain children's numeracy skills. However, this field has been developed mostly focusing on monolingual English-speaking families, and cultural differences that contextualize the home environment have not been considered. This study describes the home numeracy environment of…

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…

Children's early experiences have potential to shape their development through early childhood, middle childhood, and into adolescence. Family structure at birth and material hardship may offer insight into how children's health and well-being are shaped within their family of origin. The current paper examined (a) the association between family…

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…