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Related Experiment Videos

Hand preference and motor functioning in children with autism.

J A Hauck1, D Dewey

  • 1University of Calgary, Alberta, Canada.

Journal of Autism and Developmental Disorders
|August 24, 2001
PubMed
Summary
This summary is machine-generated.

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Children with autism often show ambiguous hand preference. This study found it

Area of Science:

  • Neurodevelopmental disorders
  • Child psychology
  • Motor control

Background:

  • Ambiguous hand preference is common in children with autism spectrum disorder (ASD).
  • Existing theories propose cognitive delay or motor skill deficits as causes.
  • The bilateral brain dysfunction hypothesis suggests atypical brain lateralization.

Purpose of the Study:

  • To investigate the underlying reasons for ambiguous hand preference in young children with autism.
  • To differentiate between cognitive delay, motor skill deficits, and brain dysfunction as explanations.

Main Methods:

  • Matched comparison study design.
  • Inclusion of three groups: children with autism, children with developmental delays, and typically developing children.
  • Assessment of hand preference, gross motor skills, fine motor skills, language, and cognitive abilities.

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Main Results:

  • Children with autism did not show the same hand preference patterns as children with developmental delays, ruling out cognitive delay as the sole cause.
  • Motor skill levels in children with developmental delays were comparable to those with autism, but without the same prevalence of ambiguous hand preference.
  • Children with autism who had a defined hand preference performed better on motor, language, and cognitive tasks.

Conclusions:

  • Ambiguous hand preference in autism is not solely due to cognitive delay or motor skill deficits.
  • Findings support the bilateral brain dysfunction hypothesis for autism, as defined hand preference correlated with better developmental outcomes.
  • Further research into neurodevelopmental correlates of hand preference in autism is warranted.