Patterns of RDS length using all three subscales of the new scale were different in malingerers when compared with both head-injured and non-head-injured controls. Previously established cutoffs for the age-corrected scaled score and Reliable Digit Span (RDS) performed similarly in the present samples. Undergraduates with a history of mild head injury performed with best effort or simulated impaired cognition and were also compared with a large sample of non-head-injured controls. Using a simulated malingerer design, we examined the predictive accuracy of existing Digit Span validity indices and explored whether patterns of performance utilizing the new version would provide additional evidence for malingering. However, the Wechsler Adult Intelligence Scale-IV (Wechsler, 2008) altered Digit Span in meaningful ways, necessitating another look at Digit Span as an embedded measure of malingering. N2 - Prior research shows that Digit Span is a useful embedded measure of malingering. T1 - Exploration of malingering indices in the wechsler adult intelligence scale-fourth edition digit span subtest Two potential alternative RDS scores were introduced, which showed better sensitivity than the traditional RDS, while retaining specificity to malingering.", Two potential alternative RDS scores were introduced, which showed better sensitivity than the traditional RDS, while retaining specificity to malingering.Ībstract = "Prior research shows that Digit Span is a useful embedded measure of malingering. (Contains 5 tables.Prior research shows that Digit Span is a useful embedded measure of malingering. Additional limitations and cautions are provided. Overall, caution should be used when utilizing the 7 cutoff in all clinical groups and when utilizing the 6 cutoff in the following groups: cerebrovascular accident, severe memory disorders, mental retardation, borderline intellectual functioning, and English as a second language. The cross-validation of specific diagnostic groups was consistent with the data reported in the literature. Sensitivity and specificity rates were calculated for the 6 and 7 cutoffs when data were globally combined and divided by clinical groups. This systematic review and cross-validation study was conducted to address these limitations, thus increasing the measure's clinical utility. Unfortunately, limitations within some of the research minimize clinical generalizability. Reliable Digit Span (RDS) is a heavily researched symptom validity test with a recent literature review yielding more than 20 studies ranging in dates from 1994 to 2011.
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