title: An examination of movement kinematics in young people with high-functioning autism and Asperger's disorder: further evidence for a motor planning deficit.
abstract: This paper examines upper-body movement kinematics in individuals with high-functioning autism (HFA) and Asperger's disorder (AD). In general, the results indicate that HFA is more consistently associated with impaired motoric preparation/initiation than AD. The data further suggest that this quantitative difference in motor impairment is not necessarily underpinned by greater executive dysfunction vulnerability in autism relative to AD. Quantitative motoric dissociation between autism and AD may have down-stream effects on later stages of movement resulting in qualitative differences between these disorder groups, e.g. "motor clumsiness" in AD versus "abnormal posturing" in autism. It will be important for future research to map the developmental trajectory of motor abnormalities in these disorder groups.
authors.affiliation: Centre for Developmental Psychiatry and Psychology, Department of Psychological Medicine, Monash University, Monash Medical Centre, 246, Clayton Road, Clayton, Victoria, Australia. nicole.rinehart@med.monash.edu.au
authors.forename: Nicole J
authors.initials: NJ
authors.lastname: Rinehart
authors.forename: Mark A
authors.initials: MA
authors.lastname: Bellgrove
authors.forename: Bruce J
authors.initials: BJ
authors.lastname: Tonge
authors.forename: Avril V
authors.initials: AV
authors.lastname: Brereton
authors.forename: Debra
authors.initials: D
authors.lastname: Howells-Rankin
authors.forename: John L
authors.initials: JL
authors.lastname: Bradshaw
mesh_terms: D000293:Adolescent; D020817:Asperger Syndrome / Q000175:diagnosis*; D001288:Attention; D001321:Autistic Disorder / Q000175:diagnosis*; D001696:Biomechanical Phenomena; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007360:Intelligence; D008297:Male; D009949:Orientation; D011596:Psychomotor Disorders / Q000175:diagnosis*; D011930:Reaction Time; D012016:Reference Values; D012718:Set, Psychology