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Wechsler Adult Intelligence Scale-Fourth Edition (WAIS-IV) - Digit Span Subtest
Availability
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Wechsler Adult Intelligence Scale-Fourth Edition (WAIS-IV)
Classification
Supplemental: Traumatic Brain Disease (TBI)
Exploratory: Unruptured Cerebral Aneurysms and Subarachnoid Hemorrhage (SAH)
Short Description of Instrument
The digit span subtest of the WAIS is a widely used measure of auditory attention and working memory that is well-normed and sensitive. The examiner reads a sequence of numbers that the subject has to repeat in sequential order. Each correctly repeated series is followed by another series plus an additional digit. For each failed sequence, the subject is given a second chance with another set of numbers of the same length if he/she had failed the first attempt. If the subject fails the second attempt the test is discontinued.
 
Publication Date: 2008
Description: Two sections: Digits Forward and Digits Backward
Ages/Grades: Individuals 16-90 years
Scores: VIQ, PIQ, and FSIQ scores
Scoring
Each correct sequence is worth one point with a maximum correct of 16. Mean score for US sample: 8.6 ± 2.6; Canadian norm 7.4 ± 2.7.
 
Permissible Values:
Raw score: 0–30 Scaled Score: 1–19.
 
Procedures:
Administered verbally. Requires minimal training. Administration time is 10 minutes.
References
Wechsler, D. (1997). Wechsler adult intelligence scale-III. New York: Psychological Corporation.
 
Wechsler, D. (2008). WAIS-IV Administration and Scoring Manual. San Antonio, TX: The Psychological Corporation.
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