J Korean Neuropsychiatr Assoc.  2000 Jan;39(1):156-166.

Application of Stop-Signal Task for Evaluation of Children with Attention Deficit Hyperactivity Disorder

• Sea HS
• Lee JB
• Park HB
• Sakong JK
• Song CJ
• Bae JW

Abstract

OBJECTICES AND METHODS: The purpose of this study was to examine availabilities of stop-signal task as a screening test for ADHD and as a research tool. Stop-signal task was applied to 40 ADHD patients and 18 normal children. Followings are the results of this study.
RESULTS
There were significant differences between ADHD group and control group in ZRFT, mean delay x block and primary-RT of stop-signal task performance(p<0.05). There was no significant difference in results of continuous performance test. SSRT of stop-signal task had significant correlation with hit reaction time of continuous performance test, and primary-RT and primary-SD with attentiveness and hit reaction time of continuous performance test. There was no significant correlation between scores of ADDES-HV and stop-signal task performance. In change of primary-SD according to intelligence, primary-SD decreased as intelligence increased but made plateau after IQ 110, and in change of SSRT according to age, SSRT decreased as intelligence increased but made plateau after 10 year-old. In discriminant ability, mean delay x block and primary-RT showed highest discriminant ability (each 75%). In addition P-inhibit showed 63.89%, SSRT showed 58%, ZRFT showed 67%, and primary-SD showed 58% in discriminant ability. There was no significant difference in stop-signal task performance between ADHD with hyperactivity and ADHD without hyperactivity.
CONCLUSION
In this point of view, stop-signal task was proved to be a useful research tool for attention deficit hyperactivity disorder as well as useful screening test tool.

Keyword

Stop-signal task; Attention deficit hyperactivity disorder; Executive function

MeSH Terms

Attention Deficit Disorder with Hyperactivity*
Child*
Executive Function
Humans
Intelligence
Mass Screening
Reaction Time
Task Performance and Analysis