University of North Carolina Wilmington, Wilmington, NC 28403, USA.
J Atten Disord. 2011 Jul;15(5):412-22. doi: 10.1177/1087054710365993. Epub 2010 May 3.
The purpose of this research was to evaluate the reliability and discriminant validity of a behavioral task of impulsivity, the delay-discounting task.
Young adults were asked to report ADHD diagnostic status and to complete the delay-discounting task. The internal consistency of the task was determined, task performances of individuals with and without self-reported ADHD were compared, and the ability of this task to discriminate between participants with and without self-reported ADHD was assessed.
The delay-discounting task showed very good to excellent internal consistency. Furthermore, participants with self-reported ADHD responded to the task in a more impulsive manner than did non-ADHD participants. Finally, moderate discriminant validity for detecting self-reported ADHD using this task was found.
Findings showed that the delay-discounting task is a promising task for both clinical research and practice as it has strong reliability overall and has moderate discriminant ability for self-reported ADHD in young adults.
本研究旨在评估冲动行为的一项行为任务——延迟折扣任务的可靠性和区别效度。
要求年轻成年人报告 ADHD 的诊断状况并完成延迟折扣任务。确定任务的内部一致性，比较报告 ADHD 和未报告 ADHD 的个体的任务表现，并评估该任务区分报告 ADHD 和未报告 ADHD 的参与者的能力。
延迟折扣任务表现出极好到优秀的内部一致性。此外，报告 ADHD 的参与者比非 ADHD 参与者更冲动地对任务做出反应。最后，发现该任务对检测自我报告的 ADHD 具有中等的判别效度。
研究结果表明，延迟折扣任务作为一种有前途的临床研究和实践工具，具有很强的可靠性，并且对年轻成年人自我报告的 ADHD 具有中等的判别能力。
