Motor persistence and inhibition in autism and ADHD.

Mark McIntosh,'s picture
PubMed URL: 
http://www.ncbi.nlm.nih.gov/pubmed/16961943
Author: 
Mostofsky SH
Author List: 
Mahone EM
Powell SK
Loftis CW
Goldberg MC
Denckla MB
Mostofsky SH
Journal: 
J Int Neuropsychol Soc
PubMed ID: 
16961943
Pagination: 
622-31
Volume: 
12
Issue: 
5
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.
Published Date: 
September, 2006

Appointments & Referrals

FIND A SPECIALIST

Publications

Read inspiring stories, news and updates about the Institute's patient care, research, special education, professional training, and community programs.

 

Resource Finder

 

A free resource that provides access to information and support for individuals and families living with developmental disabilities.