Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan

Digit Symbol Substitution Test

  • Brianne Magouirk BettcherEmail author
  • David J. Libon
  • Edith Kaplan
  • Rod Swenson
  • Dana L. Penney
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_1289

Synonyms

Coding; Digit symbol subtest

Description

The Digit Symbol Substitution Test (DS)

This is a subtest from the corpus of intelligence tests authored by David Wechsler. Since Wechsler’s publication of the Bellevue Intelligence Scale (BIS; Wechsler 1939), the basic format and concept of this test has changed very little. The test is timed. Various versions from the Wechsler corpus allow 90 or 120 s. The test requires the examinee to transcribe a unique geometric symbol with its corresponding Arabic number. The examinee is initially shown a key containing the numbers from 1 to 9. Under each number, there is a corresponding geometric symbol. The examinee is then shown a series of boxes containing numbers in the top boxes and blank boxes below them. After a short practice trial, they are then asked to copy the corresponding geometric symbol under each number. The raw score is the number of correct items completed within the prescribed time limit.

The Symbol Digit Modalities Test

(SDMT;...

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References and Readings

  1. Demakis, G. J., Sawyer, T. P., Fritz, D., & Sweet, J. J. (2001). Incidental recall on WAIS-R digit symbol discriminates Alzheimer’s and Parkinson’s disease. Journal of Clinical Psychology, 57, 387–394.PubMedCrossRefPubMedCentralGoogle Scholar
  2. Erber, J. T., Botwinick, J., & Storandt, M. (1981). The impact of memory on age differences in digit symbol performance. Journal of Gerontology, 36, 586–590.PubMedCrossRefPubMedCentralGoogle Scholar
  3. Genova, H. M., Hillary, F. G., Wylie, G., Rypma, B., & Deluca, J. (2009). Examination of processing speed deficits in multiple sclerosis using functional magnetic resonance imaging. Journal of the International Neuropsychological Society, 15, 383–393.PubMedCrossRefPubMedCentralGoogle Scholar
  4. Hart, R. P., Kwentus, J. A., Wade, J. B., & Hamer, R. M. (1987). Digit symbol performance in mild dementia and depression. Journal of Consulting and Clinical Psychology, 55, 336–338.Google Scholar
  5. Heaton, R. K., Miller, W., Taylor, M. J., & Grant, I. (2004). Revised comprehensive norms for an expanded Halstead-retain battery: Demographically adjusted neuropsychological norms for African American and Caucasian adults. Lutz: PAR.Google Scholar
  6. Ivnick, R. J., Malec, J. F., & Smith, G. E. (1992). Mayo’s older American normative studies: WAIS-R norms for ages 56–97. The Clinical Neuropsychologist, 6, 1–30.CrossRefGoogle Scholar
  7. Joy, S., Fein, D., Kaplan, E., & Freedman, M. (2000). Speed and memory in WAIS-R-NI digit symbol performance among healthy older adults. The Journal of the International Neuropsychological Society, 6, 770–780.PubMedCrossRefPubMedCentralGoogle Scholar
  8. Joy, S., Fein, D., & Kaplan, E. (2003a). Decoding digit symbol: Speed, memory, and visual scanning. Assessment, 10, 56–65.PubMedCrossRefPubMedCentralGoogle Scholar
  9. Joy, S., Kaplan, E., & Fein, D. (2003b). Digit symbol – Incidental learning in the WAIS-III: Construct validity and clinical significance. The Clinical Neuropsychologist, 17, 182–194.PubMedCrossRefPubMedCentralGoogle Scholar
  10. Joy, S., Kaplan, E., & Fein, D. (2004). Speed and memory in the WAIS-III Digit Symbol-Coding subtest across the adult lifespan. Archives of Clinical Neuropsychology, 19, 759–767.PubMedCrossRefPubMedCentralGoogle Scholar
  11. Kaplan, E. (1988). A process approach to neuropsychological assessment. In T. Boll & B. R. Bryant (Eds.), Clinical neuropsychology and brain function: Research, measurement, and practice: Master lectures. Washington, DC: The American Psychological Association.Google Scholar
  12. Kaplan, E., Fein, D., Morris, R., & Delis, D. (1991). The WAIS-R as a neuropsychological instrument. San Antonio: The Psychological Corporation.Google Scholar
  13. Kaufman, A. S., Reynolds, C. R., & McLean, J. E. (1989). Age and WAIS-R intelligence in a national sample of adults in the 20 to 74-year age range: A cross-sectional analysis with educational level controlled. Intelligence, 13, 235–253.CrossRefGoogle Scholar
  14. Kreiner, D., & Ryan, J. J. (2001). Memory and motor skill components of the WAIS-III Digit Symbol-Coding subtest. The Clinical Neuropsychologist, 15, 109–113.PubMedCrossRefPubMedCentralGoogle Scholar
  15. Lezak, M., Howieson, D. B., & Loring, D. W. (2004). Neuropsychological assessment (4th ed.). New York: Oxford University Press.Google Scholar
  16. Mitrushina, M., Boone, K. B., Razani, J., & D’Elia, L. F. (2005). Handbook of normative data for neuropsychological tests (2nd ed.). New York: Oxford University Press.Google Scholar
  17. Otis, A. B. (1920). The otis group intelligence scale (4th ed.). New York: World Book Company, Yonker-on-Hudson.Google Scholar
  18. Paolo, A. M., & Ryan, J. J. (1994). WAIS-R digit symbol patterns for persons 75 years and older. Journal of Psychoeducational Assessment, 12, 67–75.CrossRefGoogle Scholar
  19. Sakamoto, M., Roseman, E., Davis, K., Giovannetti, T., Penney, D. L., Swenson, R., et al. (2007). Assessing executive control deficits in patients with subcortical vascular disease V: Information processing speed and graphomotor impairment. Abstract presented at the 3rd biannual meeting of the International Society for Vascular Behavioural and Cognitive Disorders.Google Scholar
  20. Salthouse, T. A. (1978). The role of memory in age decline in digit-symbol substitution performance. Journal of Gerontology, 33, 232–238.PubMedCrossRefPubMedCentralGoogle Scholar
  21. Smith, A. (1982). Symbol-Digit Modalities Test (SDMT). Manual (revised). Los Angeles: Western Psychological Services.Google Scholar
  22. Smith, A. (1984). Early and long-term recovery from brain damage in children and adults: Evolution of concepts and localization and, plasticity, and recovery. In C. R. Almli & S. Finger (Eds.), Early brain damage (Vol. 1). New York: Academic Press.Google Scholar
  23. Wechsler, D. (1939). The measurement and appraisal of adult intelligence (1st ed.). Baltimore: Williams and Wilkins Corporation.CrossRefGoogle Scholar
  24. Wechsler, D. (1944). The measurement and appraisal of adult intelligence (3rd ed.). Baltimore: Williams and Wilkins Corporation.Google Scholar
  25. Wechsler, D. (1981). The Wechsler adult intelligence scale-revised. San Antonio: Psychological Corporation.Google Scholar
  26. Wechsler, D. (1997). The Wechsler adult intelligence scale-III. San Antonio: Psychological Corporation.Google Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Brianne Magouirk Bettcher
    • 1
    • 2
    Email author
  • David J. Libon
    • 3
  • Edith Kaplan
    • 4
  • Rod Swenson
    • 5
  • Dana L. Penney
    • 6
  1. 1.Departments of Neurosurgery and NeurologyUniversity of Colorado School of MedicineDenverUSA
  2. 2.Rocky Mountain Alzheimer’s Disease CenterAuroraUSA
  3. 3.Departments of Geriatrics, Gerontology, and PsychologyRowan University, New Jersey Institute for Successful Aging, School of Osteopathic MedicineStratfordUSA
  4. 4.Department of PsychologySuffolk UniversityBostonUSA
  5. 5.Department of Psychiatry and Behavioral ScienceUniversity of North Dakota School of MedicineFargoUSA
  6. 6.Department of NeurologyThe Lahey ClinicBurlingtonUSA