Iverson, G. L., & Tulsky, D. S. (2003). Detecting malingering on the WAIS-III: Unusual Digit Span performance patterns in the normal population and in clinical groups. Archives of Clinical Neuropsychology, 18(1), 1-9.

Notes that in several studies, suppressed Digit Span performance has been proposed as a potential marker for deliberately poor performance in a neuropsychological evaluation. The purpose of this study was to document Digit Span performance patterns in the Wechsler Adult Intelligence Scale-Third Edition (WAIS-III; D. A. Wechsler, 1997) standardization sample (2,450 Subjects; aged 16-89 yrs) and selected clinical groups (123 Subjects; mean age 55 yrs). Base rate tables were generated for the Digit Span scaled score, longest span forward, longest span backward, and the Vocabulary-Digit Span difference score. Cut-off scores for suspecting negative response bias were proposed, and clinical case examples were used to illustrate these scores. (PsycINFO Database Record (c) 2003 APA, all rights reserved)

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