In the fourth edition of the test (WAIS-IV), the. Application of this cutoff score to a non-litigating mild brain injury group yielded a 77% correct classification rate. The Wechsler Adult Intelligence Scale (WAIS) is one of the most frequently used tests among psychologists. The WAIS-IV has 10 core subtests (Arithmetic, Block Design, Comprehension, Digit Span, Digit Symbol, Information, Letter-Number Sequencing, Matrix Reasoning. A cutoff score of less than or equal to 7 accurately classified 75% of persons in the incomplete effort group and 69% of persons in the TBI group. The Digit Span scaled score was found to be the best discriminating index. Various indices from the Digit Span subtest were evaluated to determine the best discriminator of brain injury from poor motivation patient groups: Digit Span Forward, Digit Span Backwards, Reliable Digit Span, Digit Span Age-Corrected Scaled Score, and the difference score between the Vocabulary and Digit Span scaled scores. On average a person is not capable of retaining more than 7. Also, it appeared that gender differences in ability performance, regarding the Digit Symbol and Digit Span subtests of the WAIS-R, exist. Objective:The Digit Span (DS) subtest from the Wechsler Adult Intelligence Scale-4thEdition (WAIS-IV) was updated to better measure working memory which is potentially clinically relevant as prior unreplicated studies showed that sequencing tasks differentiated normal from neurologic groups. The idea was to test how much a person can receive, process and remember for a variety of elements. In short, Night Before Sleep was shown to have a significant effect on Digit Symbol performance.
test (like the Wechsler Adult Intelligence Scale, or WAIS, for older. 06-.16) with areas under the curve (AUCs) of.67-. average than Males in all three subtests performances. Working Memory Digit Span (Primary/FSIQ) This subtest measures working memory. The current study evaluated the utility of the Digit Span subtest in discriminating patients with mild head trauma from individuals referred for independent neuropsychological evaluation with objective evidence of poor effort. Results: Among the overall sample, performance on WMI, PSI, and 3/4 constituent subtests (i.e., Digit Span, Symbol Search, Coding) was significantly worse among the invalid group compared to the valid group ( p 2.
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