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…

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…

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…

The aim of this study was to investigate the psychiatric disorders that accompany mild intellectual disability (ID) in school-aged children in a clinical setting. The Kiddie Schedule for Affective Disorders and Schizophrenia for School-Age Children-Present and Lifetime Version interview was conducted with the children with mild ID and their…

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…

This study examines academic self-efficacy and gender as predictors of internalizing and externalizing behaviors in adolescence. In addition, the role of gender was considered as a moderator in the relationship between academic self-efficacy and internalizing/externalizing difficulties. Participants were 4,318 predominantly African American,…

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 1-year prospective study aimed to examine associations between children's preschool emotional and behavioral problems and their kindergarten classroom engagement, and to identify any gender differences in this association. In preschool, parents and teachers completed questionnaires assessing aspects of children's (n = 575) emotional…

Although evidence of negative associations between early literacy development and children's behavior problems exists, the field still lacks an understanding of the complicated links between these two areas. Children's gender has often not been included in much of the extant research as a potential moderating variable, yet gender differences may…

Gender differences in autism spectrum disorder (ASD) symptoms and associated problem behaviours over development may provide clues regarding why more males than females are diagnosed with ASD. Fifty-six high-functioning children with ASD, and 44 typically developing controls, half of the participants female, were assessed at baseline (aged…

Objective: Given the mixed literature in the area, the aim of the current study was to determine whether sex differences exist in inattention, hyperactivity, and impairment in college adults with ADHD. Method: Individuals from three universities were recruited for the study. Participants with (n = 164) and without ADHD (n = 710) completed on-line…

This study extends a body of research indicating a relationship between negative emotion and Attention Deficit-Hyperactivity Disorder (ADHD). Gender differences in the self-reporting of negative emotion among college students with ADHD were examined. Sixty-four college students (39 male, 25 female), with a diagnosis of ADHD, and 109 college…

This study aims to examine social competence of Chinese immigrant children and its associations with age, length of attendance in childcare, gender, generational status and proficiencies in English and Mandarin Chinese. One hundred Mandarin-speaking children aged three to five years from 15 childcare centres in Sydney were assessed by normed…

The present longitudinal study aimed to investigate the influence of ADHD symptoms on reading development in elementary schoolchildren. To this end, repeated assessments of ADHD symptoms (teacher ratings of inattention, hyperactivity, and impulsivity) and reading achievement (standardized tests of decoding speed and text comprehension) were…