Objective: Around 70% of adolescents with ADHD experience sleep and/or homework problems. Both impairments have been previously associated with neuropsychological deficits but have not been simultaneously examined in adolescents with ADHD and clinical sleep problems. Therefore, this study investigated how sleep problems are associated with…

This dissertation study aimed to examine the relationship between Tier 1 Positive Behavioral Intervention and Supports (PBIS) implementation fidelity and the academic (e.g., MAP Growth scores) and behavioral outcomes (e.g., major office discipline referrals, suspensions). High quality PBIS implementation fidelity has been linked with improved…

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…

Objective: This study examined the unique and interactive effects of PA volume and within-person fluctuations in PA volume (i.e., intraindividual variability in PA volume; PA-var) on preschoolers' (N = 141; 47.5% girls) ADHD symptoms. Method: Preschoolers wore accelerometers during the school day over a 2-week period. Teachers reported on…

This study explores the impact of opioid misuse on educational outcomes at individual, institutional, and community levels. It reviews academic articles published between 2000 and 2023, revealing a strong link between non-medical opioid use and other substance misuse, primarily among adolescents and young students. Opioid misuse negatively affects…

Emotion dysregulation is a common social functioning deficit in children with attention-deficit/hyperactivity disorder (ADHD). Little is known about how teachers rate irritability in school-aged children with ADHD. We examined irritability and disruptive behaviour in clinic-referred school-aged children (n = 145) with ADHD. Children in this…

The aim of the present study was to determine peer relationship levels of preschool children showing atypical and typical development. The study group consisted of 60 children with atypical development and 60 children with typical development who participated in the inclusion practices in the formal preschools and nursery classes of primary…

Attention-deficit/hyperactivity disorder (ADHD) is America's most common childhood disorder. Although an ADHD diagnosis can bring positives, recent research uncovers potential negatives associated with diagnosis. This study examines understudied racial-ethnic heterogeneity in the relationships between an early elementary school ADHD…

The goal of the current study was to investigate the role of academic enablers on the association between symptoms of inattention and hyperactivity/impulsivity and academic achievement. There were 395 3rd through 5th grade students (48% boys). Students self-rated behavioral symptoms and classroom teachers completed ratings of academic enablers.…

Children with autism spectrum disorder (ASD) demonstrate heterogeneous writing skills that are generally lower than their typically developing (TD) peers and similar to peers with attention difficulties like attention-deficit/hyperactivity disorder (ADHD). Recent evidence suggests children with ASD spend less time engaging in writing tasks…

Attention is correlated with reading, but the extent to which behavioral ratings and sustained attention relate to reading skills is unclear. We assessed 245 fourth and fifth grade struggling readers (mean age = 10.3 years) on behavioral ratings of attention, sustained attention, and reading over a school year. Contributions of behavioral ratings…

The present study examined how different externalizing child behaviors (i.e., hyperactivity, conduct problems) were uniquely associated with teachers' mental representations of relationships with individual children. Participants were 61 teacher-child dyads from typical Dutch elementary schools. Using a two-wave design, teachers first reported…

This study investigated gender- and age-related differences in academic motivation and classroom behaviour in adolescents. Eight hundred and fifty-five students (415 girls and 440 boys) aged 11-16 ("M" age = 13.96, "SD" = 1.47) filled in a questionnaire that examined student academic motivation and teachers completed a…

This study aimed to investigate how children with attention deficit hyperactivity disorder (ADHD) adjust to school when compared to typically developing students. The convenience sample consisted of 135 children--27 with ADHD and 108 in the control group--and 19 prevalent teachers from 6 primary and secondary schools in Northwest Italy. Children…

The purpose of the study was to assess early literacy skills and examine the presence and stability of challenging behaviors across the critical threshold of the kindergarten school year. Students' (n = 337) literacy performance (letter sound fluency, word attack, and phonological awareness) and challenging behaviors (teacher ratings of…