title: [Attentional impairment in children with attention deficit and hyperactivity disorder].
abstract: BACKGROUND
  Attention-deficit hyperactivity disorder (ADHD) is a heterogeneous disorder currently defined by clinical history and behavioral report of impairment. The Attention Network test (ANT) gives measures of different aspects of the complex process of attention.
  
  
  OBJECTIVE
  We ask if children with Attention Deficit Hyperactivity Disorder (ADHD) will show a characteristic pattern of deficits on this test.
  
  
  METHODS
  The sample included 40 children (M=9 years) who performed the "Attention network test". Children with an ADHD diagnosis (N=20) were compared to a control group (N=20).
  
  
  RESULTS
  The group of children with ADHD showed slower reaction times in all conditions (mean RT=866 ms; SD=234,063). Children with ADHD showed a significant impairment in their executive control system compared to healthy subjects, with slower reaction times in incongruent conditions and lower accuracy scores (RT=1064 ms; F(1.38) p=0.02). Our results showed that spatial orienting and alerting in ADHD was no different than controls (p=0,68). ADHD group showed a greater variable response (p=0,0001).
  
  
  CONCLUSIONS
  The present study showed that impairment in executive control system and variability measures are the characteristic pattern of deficits in children with ADHD.
authors.affiliation: Service de Pédopsychiatrie, Hôpital Razi, Manouba.
authors.forename: Zeineb
authors.initials: Z
authors.lastname: Abbes
authors.forename: Asma
authors.initials: A
authors.lastname: Bouden
authors.forename: Isabelle
authors.initials: I
authors.lastname: Amado
authors.forename: Marie
authors.initials: M
authors.lastname: Chantal Bourdel
authors.forename: Karim
authors.initials: K
authors.lastname: Tabbane
authors.forename: Mohamed
authors.initials: M
authors.lastname: Béchir Halayem
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000503:physiopathology*; D016022:Case-Control Studies; D002648:Child; D056344:Executive Function / Q000502:physiology*; D006801:Humans; D011930:Reaction Time / Q000502:physiology*