title: Internal consistency and discriminant validity of a delay-discounting task with an adult self-reported ADHD sample.
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.
  
  
  METHODS
  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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: University of North Carolina Wilmington, Wilmington, NC 28403, USA. hurstr@uncw.edu
authors.forename: Ruth M
authors.initials: RM
authors.lastname: Hurst
authors.forename: Hayden O
authors.initials: HO
authors.lastname: Kepley
authors.forename: Marjorie K
authors.initials: MK
authors.lastname: McCalla
authors.forename: Melissa K
authors.initials: MK
authors.lastname: Livermore
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000503:physiopathology* / Q000523:psychology; D003657:Decision Making; D005260:Female; D006801:Humans; D007175:Impulsive Behavior; D008297:Male; D015203:Reproducibility of Results; D012201:Reward; D013647:Task Performance and Analysis; D013997:Time Factors; D055815:Young Adult