title: Executive dysfunction in school-age children with ADHD.
abstract: OBJECTIVE
  The study examined executive function deficits (EFD) in school-age children (7 to 14 years) with ADHD.
  
  
  METHODS
  A clinical sample of children diagnosed with ADHD (n = 49) was compared to a population sample (n = 196) on eight executive function (EF) measures. Then, the prevalence of EFD in clinical and non-clinical children was examined at the individual level according to three methods previously applied to define EFD, and a fourth method was included to control for the effect of age on performance.
  
  
  RESULTS
  Children with ADHD were significantly more impaired on measures of EF than children without ADHD at the group level. However, only about 50% of children with ADHD were found to have EFD at the individual level, and results appeared relatively robust across methods applied to define EFD.
  
  
  CONCLUSIONS
  As a group, children with ADHD displayed more problems on neuropsychological measures of EF than non-clinical children; at the individual level, there appeared to be heterogeneity in EF impairment.
authors.affiliation: University of Aarhus, Denmark. rikkel@psy.au.dk
authors.forename: Rikke
authors.initials: R
authors.lastname: Lambek
authors.forename: Rosemary
authors.initials: R
authors.lastname: Tannock
authors.forename: Soeren
authors.initials: S
authors.lastname: Dalsgaard
authors.forename: Anegen
authors.initials: A
authors.lastname: Trillingsgaard
authors.forename: Dorte
authors.initials: D
authors.lastname: Damm
authors.forename: Per Hove
authors.initials: PH
authors.lastname: Thomsen
mesh_terms: D000293:Adolescent; D001289:Attention Deficit Disorder with Hyperactivity / Q000523:psychology*; D002648:Child; D056344:Executive Function; D005260:Female; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D012720:Severity of Illness Index