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Related Experiment Videos

Modified WAIS-R for patients with speech and/or hand dysfunction.

V W Berninger1, B M Gans, P St James

  • 1University of Washington, Seattle 98195.

Archives of Physical Medicine and Rehabilitation
|April 1, 1988
PubMed
Summary

This study found a modified Wechsler Adult Intelligence Scale-Revised (WAIS-R) is a feasible tool for assessing intelligence in individuals with physical disabilities. Results suggest early-onset motor dysfunction may impact nonverbal intelligence more than verbal abilities.

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Area of Science:

  • Neuropsychology
  • Psychometrics
  • Rehabilitation Medicine

Background:

  • Assessing intelligence in individuals with physical disabilities presents unique challenges.
  • Existing intelligence tests may not adequately accommodate participants with speech or hand impairments.
  • The Wechsler Adult Intelligence Scale-Revised (WAIS-R) is a widely used intelligence assessment tool.

Purpose of the Study:

  • To evaluate the feasibility and validity of a modified WAIS-R for individuals with speech and/or hand dysfunction.
  • To compare the performance of individuals with physical disabilities on the modified WAIS-R with a standard version.
  • To investigate the impact of early-onset versus later-onset motor dysfunction on cognitive abilities.

Main Methods:

  • A modified WAIS-R, including four Verbal and three Performance subtests, was administered.

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  • Correlations were calculated between the modified and standard WAIS-R versions.
  • Intelligence quotients (IQs) were compared between groups with different types and onset of physical disabilities (cerebral palsy vs. spinal cord injury).

    • Main Results:

    • The modified WAIS-R showed feasibility, with no significant differences in Verbal IQs for a handicapped group or Performance IQs for a control group compared to the standard WAIS-R.
    • Patients with spinal cord injury scored significantly higher on both Verbal and Performance IQs than those with severe cerebral palsy.
    • The performance IQ difference between the groups was more pronounced than the verbal IQ difference.

    Conclusions:

    • The modified WAIS-R is a promising instrument for assessing intelligence in individuals with physical limitations.
    • Early-onset motor dysfunction, as seen in severe cerebral palsy, may have a more substantial impact on nonverbal intelligence compared to verbal intelligence.
    • Later-onset motor dysfunction, as seen in spinal cord injury, appears to have less impact on overall intellectual assessment using the modified WAIS-R.