Internal consistency and discriminant validity of a delay-discounting task with an adult self-reported ADHD sample

Ruth M. Hurst, Hayden O. Kepley, Marjorie K. McCalla, Melissa K. Livermore

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: The purpose of this research was to evaluate the reliability and discriminant validity of a behavioral task of impulsivity, the delay-discounting task. Method: 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. Results: 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. Conclusion: 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. (J. of Att. Dis. 2011; 15(5) 412-422).

Original languageEnglish (US)
Pages (from-to)412-422
Number of pages11
JournalJournal of Attention Disorders
Volume15
Issue number5
DOIs
StatePublished - Jul 2011

Keywords

  • ADHD
  • adults
  • delay-discounting task
  • impulsivity
  • inhibition

ASJC Scopus subject areas

  • Developmental and Educational Psychology
  • Clinical Psychology

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