Objective: This study aimed to objectively assess signs of hyperactivity in adults suspected of having ADHD, addressing potential sex bias in diagnosis. Methods: About 13,179 (49% female) adults with an average age of 33 years with ADHD and 1,910 (41% female) adults with an average age of 36 years without ADHD were included. Motor activity was…

Objectives: There is a need to examine the utility of objective measures of attention-deficit/hyperactivity disorder (ADHD) symptoms in children. Objective measures of ADHD symptoms, such as physical activity, may provide a more nuanced assessment of behavior that can be used to augment traditional cross-informant ratings of ADHD symptoms by…

Background: The reciprocal relationships between literacy skills and various subscales of mental health have been examined in few studies. The objective is to re-examine this question in a longitudinal study with the possibility of a gender effect. Methods: A 4-year longitudinal study was conducted as part of the French national cohort ELFE (N =…

This study examines the relationship between middle school students' undesirable behaviours and digital game addiction. Undesirable behaviours disrupt teaching, harm peers, compromise safety, and lower teacher motivation. These behaviours, often influenced by family and environmental factors, disrupt classroom order. Digital games, particularly…

Previous studies have hinted at sex differences in developmental trajectories in ADHD symptoms; however, little is known about the nature or cause of these differences and their implications for clinical practice. We used growth mixture modelling in a community-ascertained cohort of n = 1,571 participants to study sex differences in ADHD symptom…

Studies on the impact of the COVID-19 pandemic on autistic children's psychosocial outcomes have shown mixed results. In the current study we aimed to gain a better insight into the effect of the COVID-19 pandemic by comparing psychosocial outcomes collected pre-pandemic with data collected during the pandemic. We used the Strengths and…

Heterogeneous findings on the prevalence of emotional and behavioural difficulties (EBD) have been reported in Middle Eastern countries. Moreover, the prevalence of EBD among adolescents in Qatar is unknown, making it difficult to implement the necessary educational or psychosocial programs. This study used a cross-sectional methodology to assess…

Poor reading has been linked to negative outcomes on a wide range of emotional-behavioural dimensions in children. However, little is known about the time course of these associations. In this study we analyse data from a sample of Finnish children (N = 199; 106 boys) which included measures of reading fluency in grade 1 (age 7 or 8), and…

This study examined sex differences in externalizing and internalizing symptoms of children with ASD without intellectual disability (ID). The sample (n = 80) included 40 girls and 40 boys, ages 6-12 years, with ASD (without ID) matched on age and IQ. Externalizing and internalizing symptoms were significantly elevated for this sample (girls and…

Background and aims: Social interactions in preschool and a child's gender are, in cross-sectional studies, related to the child's overall levels of hyperactive behaviour and engagement in preschool activities. However, whether social interaction and gender can predict children's engagement and hyperactivity is not thoroughly investigated. This…

The unique residential context found within boarding schools may have important implications for students' perceptions of school climate and, in turn, may impact their social-emotional well-being. However, there is limited research on the relations between school climate and boarding students social-emotional well-being. This study intended to…

Exposure to community adversities and violence can be associated with a cascade of neurocognitive, mental health, and behavioral challenges among urban adolescents. Influenced by the bio-ecological framework, this study examines if problems with executive functioning (EF) exacerbate the relation between exposure to community adversity and violence…

Teachers frequently rate boys as more hyperactive/impulsive than girls and Black children more than White children (DuPaul et al., 2016; Miller et al., 2009). Do these ratings reflect true differences in their behavior? Researchers have compared parent and teacher reports (Miller et al., 2009), but is hard to draw conclusions from such comparisons…

This study examined child demographics and teacher background and beliefs that may be associated with teacher reports of externalizing behaviors in preschool children. Reports of these behaviors are associated with preschool suspension or expulsion. Head Start teacher and child data were used to investigate how teacher-reported child behavior…

An expanded Theory of Planned Behaviour (TPB; Ajzen, "Organizational Behavior and Human Decision Processes" 50:179-211, 1991, Ajzen, "Journal of Applied Social Psychology" 32:665-683, 2002) which incorporates affective, moral, and personal belief variables with Ajzen's original social, behavioural, and cognitive factors has not…