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Related Experiment Videos

Inhibitory function in nonretarded children with autism

S Ozonoff1, D L Strayer

  • 1University of Utah, USA.

Journal of Autism and Developmental Disorders
|February 1, 1997
PubMed
Summary

Children with autism demonstrated intact inhibitory control in motor and cognitive tasks, contrasting with previous findings of executive deficits. This suggests specific spared inhibitory functions in autism spectrum disorder.

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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Cognitive Science

Background:

  • Executive functions, including inhibitory control, are often impaired in neurodevelopmental conditions.
  • Previous research has indicated deficits in flexibility and other executive functions in children with autism spectrum disorder (ASD).

Purpose of the Study:

  • To investigate inhibitory control in children with autism (n=13) compared to typically developing controls (n=13).
  • To differentiate the specific components of inhibition that may be affected or spared in autism.

Main Methods:

  • Utilized the Stop-Signal paradigm to assess motor response inhibition.
  • Employed the Negative Priming task to evaluate cognitive inhibition of distractor stimuli.
  • Matched participants on age and IQ to control for confounding variables.

Main Results:

  • Children with autism showed comparable performance to controls on inhibiting motor responses in the Stop-Signal task.
  • Both groups exhibited similar abilities in inhibiting the processing of irrelevant visual information during the Negative Priming task.
  • These findings indicate preserved inhibitory function in specific domains within the autism population.

Conclusions:

  • At least two key components of inhibitory control appear to be intact in children with autism.
  • These results challenge the notion of global executive dysfunction in autism, suggesting a more nuanced profile.
  • Understanding these spared functions may aid in distinguishing autism from other neurodevelopmental disorders with executive deficits.

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