Separate and overlapping relationships of inattention and hyperactivity/impulsivity in children and adolescents with attention-deficit/hyperactivity disorder

Lauren C. Smith, Leanne Tamm, Carroll W. Hughes, Ira H. Bernstein

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

There is debate regarding the dimensional versus categorical nature of attention-deficit/hyperactivity disorder (ADHD). This study utilized confirmatory factor analysis to examine this issue. ADHD symptoms rated on interviews and rating scales from a large sample of individuals (ages 3-17, 74 % male, 75 % Caucasian) with ADHD were examined (n = 242). Four potential factor structures were tested to replicate prior findings in a sample with a wide age range and included only participants who met DSM-IV-TR diagnostic criteria for ADHD. Correlations with executive function measures were performed to further assess the separability and validity of the derived factors. The data support a bifactor model with a general ADHD factor and two specific factors, inattention and hyperactivity/impulsivity. Importantly, the individual factors were also differentially correlated with executive functioning measures. This study adds to a growing literature suggesting both a general component to ADHD, as well as dimensional traits of inattention and hyperactivity/impulsivity, associated with distinct executive functioning profiles. The presence of a general underlying factor contraindicates separating the inattentive and combined subtypes of ADHD into distinct disorders.

Original languageEnglish (US)
Pages (from-to)9-20
Number of pages12
JournalADHD Attention Deficit and Hyperactivity Disorders
Volume5
Issue number1
DOIs
StatePublished - Mar 7 2013

Keywords

  • ADHD subtypes
  • Executive functioning
  • Factor analysis
  • Hyperactivity/impulsivity
  • Inattention

ASJC Scopus subject areas

  • Clinical Psychology
  • Psychiatry and Mental health

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