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Neuropsychologic functioning in autism: profile of a complex information processing disorder
N J Minshew1, G Goldstein, D J Siegel
1Department of Psychiatry, University of Pittsburgh School of Medicine, PA, USA.
Summary
Autistic individuals show specific cognitive strengths and weaknesses, not a general deficit. This study reveals a unique neuropsychological profile in autism, highlighting complex information processing challenges.
Area of Science:
- Neuroscience
- Psychology
- Cognitive Science
Background:
- Autism is theorized to involve core deficits in various cognitive domains.
- Previous research suggests potential issues in sensory perception, attention, memory, and executive functions.
Purpose of the Study:
- To investigate the neurobehavioral theories of autism using a comprehensive neuropsychological assessment.
- To define the specific cognitive profile of autistic individuals with average to above-average IQ.
Main Methods:
- Administered a neuropsychological battery to 33 autistic individuals (IQ > 80) and 33 matched controls.
- Utilized stepwise discriminant function analysis to identify distinguishing cognitive patterns.
Main Results:
- Autistic individuals exhibited impairments in skilled motor, complex memory, complex language, and reasoning.
- Conversely, they showed intact or superior performance in attention, simple memory, simple language, and visual-spatial domains.
- The observed profile indicates selective impairment in complex information processing, sparing visual-spatial skills.
Conclusions:
- The findings do not support a general deficit or intellectual disability model of autism.
- A multiple primary deficit model is proposed, reflecting complexity in information processing demands.
- The profile aligns with autism as a late information processing disorder with preserved early processing.