This longitudinal study examined how two externalising behaviour problems, attention-
deficit hyperactivity disorder (ADHD) and conduct disorder (CDs), are associated over time …

This dissertation comprises three individual research articles investigating longitudinal
mechanisms between different externalising behaviour symptoms, learning motivation …

In the investigation of the effect of attention deficit hyperactivity disorder (ADHD) symptoms
on school careers there is a need to study the role of adolescent and childhood ADHD …

Academic impairment in individuals with attention-deficit/hyperactivity disorder (ADHD) is in
part due to reduced motivation for academic tasks, which is likely to vary as a function of task …

The present study evaluates differences in self-reported intrinsic and extrinsic academic
motivation and amotivation between eighth-grade adolescents with (n= 162) and without (n …

Background This longitudinal study examined growth trajectories of academic motivation in
youth with and without attention‐deficit/hyperactivity disorder (ADHD) across the important …

Abstract Attention-Deficit/Hyperactivity Disorder (ADHD) is associated with academic failure
in high school; however the underpinnings of these difficulties are insufficiently understood …

Less is understood about the relationship between ADHD symptoms and academic
performance in adolescents than the relationship in younger children. As such, the aim of …

Background Attention‐deficit/hyperactivity disorder (ADHD) is associated with negative
social and occupational outcomes across the life course. However, there has been limited …

Pupils diagnosed with ADHD and pupils with ADHD symptoms tend to do less well at school
than their symptom-free peers. This has been found to be particularly true for predominantly …