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Normative Symbol Digit Modalities Test performance in a community-based sample.

Laura K Sheridan1, Hiram E Fitzgerald, Kenneth M Adams

  • 1Department of Psychology, Michigan State University, East Lansing, MI 48823, USA. sherid41@msu.edu

Archives of Clinical Neuropsychology : the Official Journal of the National Academy of Neuropsychologists
|September 6, 2005
PubMed
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The Symbol Digit Modalities Test (SDMT) is a reliable tool for screening adult brain impairment. Performance on the SDMT is not affected by age, education, gender, or income in community samples.

Area of Science:

  • Neuropsychology
  • Cognitive Assessment
  • Neurological Screening

Background:

  • The Symbol Digit Modalities Test (SDMT) is a widely used screening tool for brain impairment.
  • Its ease of use and oral administration make it popular.
  • Limited normative data exists for non-clinical populations across demographic variables.

Purpose of the Study:

  • To examine Symbol Digit Modalities Test performance in a community-dwelling control sample.
  • To investigate the influence of age, education, gender, and socioeconomic status on SDMT performance.

Main Methods:

  • A community-dwelling control sample was assessed using the Symbol Digit Modalities Test.
  • Performance data were analyzed using a multivariate model to account for demographic factors.

Related Experiment Videos

Main Results:

  • Demographic variables including age, education, gender, and income did not significantly impact Symbol Digit Modalities Test performance.
  • The study identified consistent performance across diverse subgroups within the control sample.

Conclusions:

  • The Symbol Digit Modalities Test demonstrates robust performance across various demographic factors in a non-clinical population.
  • These findings support the SDMT's utility as a reliable screening instrument for adult neuropsychological impairment.