Obsessive-compulsive disorder (OCD) and autism are characterized by the presence of repetitive behaviors. Differentiating between repetitive behaviors attributable to a diagnosis of autism, and those attributable to OCD, poses challenges for differential and co-occurring diagnosis. Differentiation is important to inform appropriate supports and…

Studies have extensively presented a range of best practices for teachers to develop adequate classroom management skills. Yet, to date the connected attitudes that teachers would require to capably execute classroom management have received scarce attention in scientific literature. Accordingly, this article documents teachers' classroom…

Parental knowledge is often the result of parents soliciting information from their child and their child's disclosure of that information. Although child disclosure is most closely (and negatively) associated with behavior problems in adolescence, it is not yet known whether this is also the case in childhood. The aim of this study was to examine…

Machiavellianism is an antisocial interpersonal style involving the use of manipulative, deceptive, and coercive behaviors in the pursuit of self-interest. Although widely studied as a "dark" personality trait in adults, relatively little is known about the developmental correlates of Machiavellian tendencies earlier in life. The present…

Whether high quantities of center-based care cause behavior problems is a controversial question. Studies using covariate adjustment for selection factors have detected relations between center care and behavior problems, but studies with stronger internal validity less often find such evidence. We examined whether within-child changes in hours in…

Introduction: Adults with intellectual disabilities have an increased vulnerability to mental health problems and challenging behaviour. In addition to psychotherapeutic or psychoeducational methods, off-label pharmacotherapy, is a commonly used treatment modality. Objective: The aim of this study was to establish evidence-based guideline…

Youth with conduct problems have poorer academic outcomes than their typically developing peers. The objective of the current study was to examine how sexual minority status was associated with trajectories of teacher-rated mathematics and language arts (i.e., reading and writing) achievement in seven consecutive years across the transition to…

Anxiety has been associated with social communication and interaction differences among autistic children. We sought to clarify the direction of these associations longitudinally, and test executive function as a moderator. Participants were autistic children (N = 157; 15% female, 85% male) engaged in a longitudinal study. Analyses focused on two…

Instability in early childhood education and care (ECEC) arrangements may have detrimental consequences on children's mental health. This study examined ECEC trajectories in the first 30 months of life for 373 children from low-income families in Toronto. We provide information about patterns of instability and reasons for instability. We also…

The present study investigated whether distinct developmental patterns of externalizing behaviors (EBs: hyperactivity-impulsivity, noncompliance, physical aggression) based on parent reports were repeatedly and differentially associated with separate dimensions of internalizing problems such as general anxiety, separation anxiety, and depressive…

School disciplinary climate influences student outcomes. As a result, examining differences in principals' perceptions of disciplinary climate within and across countries and regions may shed some light on decreasing achievement gaps. The quantitative study examined how principals from different geographical locations perceive school disciplinary…

This article presents results from a self-report survey of misconduct behaviours and the stress students (n = 916) experienced at one Canadian community college. Results showed that students engaged in a variety of contract cheating behaviours, and experienced a myriad of stressors both in and outside the college context, including traumatic life…

The quality of peer attachment in adolescence is an important determinant of psychosocial adjustment. To date, few clear conclusions can be drawn about the most important factors associated with the quality of peer attachment. This study aimed to identify the most important individual and relational factors associated with peer attachment quality,…

The study explores whether physical activity (PA) in early adolescence limits the risk of internalizing and externalizing problems in youth with difficult temperaments, from low-income families, or exposed to impaired family functioning. Participants (N = 1312; 53% girls) were drawn from the Quebec Longitudinal Study of Child Development (QLSCD).…

The current study examined the role of informal supports in predicting resilience among families of children with autism spectrum disorder. Participants included 153 caregivers of children with autism spectrum disorder, who were between the ages of 2 and 18years (M=10.45; SD=4.32). Caregivers completed a measure of satisfaction with informal…