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The Symbol Digit Modalities Test - Oral version: Italian normative data.

Ugo Nocentini1, A Giordano, Sarah Di Vincenzo

  • 1Uinversity of Rome Tor Vergata, Italy. u.nocentini@hsantalucia.it

Functional Neurology
|June 27, 2006
PubMed
Summary

This study provides the first Italian normative data for the oral Symbol Digit Modalities Test (SDMT), a key measure of information processing speed. These new benchmarks will enhance the test

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Area of Science:

  • Neuropsychology
  • Cognitive Psychology
  • Psychometrics

Background:

  • Effective neuropsychological tests are vital for accurate diagnosis.
  • The Symbol Digit Modalities Test (SDMT) is a widely used, reliable measure of information processing speed.
  • Normative data for the oral SDMT is lacking for the Italian population.

Purpose of the Study:

  • To establish normative data for the oral version of the Symbol Digit Modalities Test (SDMT) in the Italian population.
  • To provide age and education-corrected scores for the SDMT.
  • To facilitate wider clinical application of the SDMT in Italy.

Main Methods:

  • Administered the oral Symbol Digit Modalities Test (SDMT) to an Italian sample.
  • Collected data on participant age and education levels.

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  • Analyzed performance data to establish normative values and correction factors.

    • Main Results:

    • Performance on the SDMT was significantly influenced by both age and education.
    • Correction scores based on age and education were developed.
    • A cut-off score of 34.2 was established to indicate normality.

    Conclusions:

    • The availability of Italian normative data for the oral SDMT is crucial for its accurate interpretation in clinical practice.
    • Age and education-corrected scores improve the precision of the SDMT.
    • This study enhances the utility of the SDMT for neuropsychological assessments in Italy.