title: Is there a link between motor performance variability and social-communicative impairment in children with ADHD-CT: a kinematic study using an upper limb fitts' aiming task.
abstract: OBJECTIVE
  This study investigated the relationship between motor performance and social-communicative impairment in children with ADHD-combined type (ADHD-CT).
  
  
  METHODS
  An upper limb Fitts' aiming task was used as a measure of motor performance and the Social Responsiveness Scale as a measure of social-communicative/autistic impairment in the following groups: ADHD-CT (n = 11) and typically developing (TD) controls (n = 10).
  
  
  RESULTS
  Children with ADHD-CT displayed greater variability in their movements, reflected in increased error variance over repeated aiming trials compared with TD controls. Motor performance variability was associated with social-communicative deficits in the ADHD-CT but not in the TD group.
  
  
  CONCLUSIONS
  Social-communicative impairments further complicate the clinical picture of ADHD-CT; therefore, further research in this area is warranted to ascertain whether a particular pattern of motor disturbance in children with ADHD-CT may be clinically useful in identifying and assessing children with a more complex ADHD presentation.
authors.affiliation: Monash University, Notting Hill, Victoria, Australia Nicole.Papadopoulos@monash.edu.
authors.forename: Nicole
authors.initials: N
authors.lastname: Papadopoulos
authors.affiliation: Monash University, Notting Hill, Victoria, Australia.
authors.forename: Nicole J
authors.initials: NJ
authors.lastname: Rinehart
authors.affiliation: Monash University, Notting Hill, Victoria, Australia.
authors.forename: John L
authors.initials: JL
authors.lastname: Bradshaw
authors.affiliation: Monash University, Notting Hill, Victoria, Australia.
authors.forename: John
authors.initials: J
authors.lastname: Taffe
authors.affiliation: Monash University, Notting Hill, Victoria, Australia.
authors.forename: Jennifer
authors.initials: J
authors.lastname: McGinley
mesh_terms: D000293:Adolescent; D001132:Arm / Q000503:physiopathology; D001289:Attention Deficit Disorder with Hyperactivity / Q000150:complications* / Q000175:diagnosis; D001321:Autistic Disorder / Q000150:complications* / Q000175:diagnosis; D001696:Biomechanical Phenomena; D002648:Child; D003142:Communication; D005260:Female; D006801:Humans; D008297:Male; D009039:Motion Perception / Q000502:physiology*; D009048:Motor Skills / Q000502:physiology*; D019957:Motor Skills Disorders / Q000150:complications* / Q000175:diagnosis; D009069:Movement Disorders / Q000175:diagnosis* / Q000209:etiology; D011237:Predictive Value of Tests; D011569:Psychiatric Status Rating Scales; D011795:Surveys and Questionnaires; D013647:Task Performance and Analysis; D014888:Wechsler Scales