Procedural Learning in Children With Developmental Coordination, Reading, and Attention Disorders

Area of Science:

• Neuroscience
• Developmental Psychology
• Pediatrics

Background:

• Developmental Coordination Disorder (DCD), Reading Disorder (RD), and Attention-Deficit Hyperactivity Disorder (ADHD) are common neurodevelopmental conditions affecting children.
• Understanding procedural learning in children with these disorders is crucial for effective educational and therapeutic strategies.

Purpose of the Study:

• To evaluate repetition-based procedural learning in children with DCD, RD, and ADHD, both individually and in combination.
• To compare the learning capabilities of children with DCD+RD+ADHD against those with RD+ADHD, ADHD alone, and typically developing controls.

Main Methods:

• 187 children participated across four groups: DCD+RD+ADHD, RD+ADHD, ADHD, and a control group.
• Two procedural learning tasks, Assembly learning and Mirror drawing, were administered across four testing occasions.
• Performance was assessed after consecutive trials and a trial following an interference task.

Main Results:

• Children with DCD+RD+ADHD demonstrated significant improvement in procedural learning with training.
• However, the magnitude of improvement in the DCD+RD+ADHD group was significantly lower compared to the RD+ADHD, ADHD, and control groups.
• This suggests a specific deficit in the rate or extent of procedural learning in the combined disorder group.

Conclusions:

• Children with co-occurring DCD, RD, and ADHD can improve procedural learning skills through repetition.
• Intervention strategies for this population should be individualized, considering their specific learning capacities and challenges.
• Further research may explore the underlying mechanisms contributing to the reduced learning rate in this complex comorbidity.