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Task switching and attention deficit hyperactivity disorder.

N J Cepeda1, M L Cepeda, A F Kramer

  • 1Beckman Institute and Department of Psychology, University of Illinois at Urbana-Champaign, USA.

Journal of Abnormal Child Psychology
|July 8, 2000
PubMed
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Children with attention deficit hyperactivity disorder (ADHD) exhibit executive control deficits. ADHD medication significantly improved task-switching performance and response inhibition in children with ADHD.

Area of Science:

  • Cognitive Psychology
  • Neurodevelopmental Disorders

Background:

  • Executive control processes are crucial for task management.
  • Children with attention deficit hyperactivity disorder (ADHD) often display executive function challenges.
  • Task set inhibition and preparation are key components of executive control.

Purpose of the Study:

  • To investigate executive control efficiency in children with and without ADHD.
  • To specifically examine task set inhibition and preparation in ADHD.
  • To assess the impact of medication on executive control in ADHD.

Main Methods:

  • Utilized a task-switching paradigm with ADHD and non-ADHD children.
  • Administered tasks involving repeated single tasks (non-switch trials) and alternating tasks (switch trials).

Related Experiment Videos

  • Calculated switch costs to measure executive control demands.

    • Main Results:

    • ADHD children demonstrated significantly higher switch costs compared to non-ADHD children.
    • Medication normalized the task-switching performance of ADHD children to control levels.
    • ADHD medication enhanced the ability of children to inhibit inappropriate responses.

    Conclusions:

    • Executive control, particularly task set inhibition, is impaired in ADHD.
    • Medication effectively mitigates executive control deficits in ADHD during task switching.
    • Findings support cognitive models of ADHD and the role of executive functions.