Motor persistence and inhibition in autism and ADHD

E. Mark Mahone, Stephanie K. Powell, Christopher W. Loftis, Melissa C. Goldberg, Martha B. Denckla, Stewart H. Mostofsky

Research output: Contribution to journalArticle

Abstract

The present study compared performance of children with Attention-Deficit/Hyperactivity Disorder (ADHD) and high functioning autism (HFA) with that of controls on 4 tasks assessing 2 components of motor control: motor response inhibition and motor persistence. A total of 136 children (52 ADHD, 24 HFA, 60 controls) ages 7 to 13 years completed 2 measures of motor inhibition (Conflicting Motor Response and Contralateral Motor Response Tasks) and 2 measures of motor persistence (Lateral Gaze Fixation and NEPSY Statue). After controlling for age, IQ, gender, and basic motor speed, children with ADHD performed significantly more poorly than controls on the Conflicting Motor Response and Contralateral Motor Response Tasks, as well as on Statue. In contrast, children with HFA achieved lower scores than controls only on measures of motor persistence, with no concomitant impairment on either motor inhibition task. These results are consistent with prior research that has demonstrated relatively spared motor inhibition in autism. The findings highlight the utility of brief assessments of motor control in delineating the unique neurobehavioral phenotypes of ADHD and HFA.

Original languageEnglish (US)
Pages (from-to)622-631
Number of pages10
JournalJournal of the International Neuropsychological Society
Volume12
Issue number5
DOIs
StatePublished - Sep 2006

Keywords

  • Child
  • Development
  • Developmental disorders
  • Executive function
  • Motor skill
  • Neuropsychological tests

ASJC Scopus subject areas

  • Neuroscience(all)
  • Clinical Psychology
  • Clinical Neurology
  • Psychiatry and Mental health

Fingerprint Dive into the research topics of 'Motor persistence and inhibition in autism and ADHD'. Together they form a unique fingerprint.

  • Cite this