Can task-switching training enhance executive control functioning in children with attention deficit/-hyperactivity...

Area of Science:

• Neuroscience
• Developmental Psychology
• Cognitive Science

Background:

• Attention deficit/hyperactivity disorder (ADHD) is characterized by significant impairments in executive control functions.
• Key affected functions include inhibitory control, task-switching, and working memory (WM).
• Effective cognitive interventions are crucial for managing ADHD symptoms.

Purpose of the Study:

• To investigate the efficacy of task-switching training in improving executive control functions in children with ADHD.
• To determine if task-switching training selectively enhances cognitive abilities beyond task-switching itself.

Main Methods:

• A crossover training design was employed with 20 children diagnosed with combined-type ADHD on stable methylphenidate medication.
• Participants underwent both single-task training and task-switching training in a counterbalanced order.
• Performance improvements were assessed on novel switching tasks, inhibitory control tasks, verbal WM tasks, and fluid intelligence measures.

Main Results:

• Children demonstrated significant improvements in task-switching (reduced switching costs) after task-switching training compared to single-task training.
• Selective enhancements were observed in inhibitory control and verbal working memory following task-switching training.
• No significant improvements were noted in fluid intelligence (reasoning) or single-task performance.

Conclusions:

• Task-switching training is an effective cognitive intervention for enhancing executive control functions in children with ADHD.
• The training shows specific benefits for task-switching, inhibitory control, and verbal working memory.
• These findings suggest task-switching training as a valuable therapeutic tool for improving cognitive deficits in ADHD.