Reliable digit span8/5/2023 ![]() Marshall2 Abstract 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. Schroeder1, Philip Twumasi-Ankrah1, Lyle E. Performance on the Test of Memory Malingering is predicted by the number of errors on its first 10 items on an inpatient epilepsy monitoring unit. Reliable Digit Span: A Systematic Review and Cross-Validation Study Ryan W.Limited usefulness of the Rey Fifteen-Item Test in detection of invalid performance in veterans suspected of mild traumatic brain injury. 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.Cross-cultural effect on suboptimal effort detection: an example of the Digit Span subtest of the WAIS-III in Taiwan.Utility of WAIS-IV Digit Span indices as measures of performance validity in moderate to severe traumatic brain injury.Digit Span embedded validity indicators in neurologically-intact veterans.Utility of various WAIS-IV Digit Span indices for identifying noncredible performance validity among cognitively impaired and unimpaired examinees.Use of the Wechsler Adult Intelligence Scale Digit Span subtest for malingering detection: a meta-analytic review.Detecting incomplete effort with Digit Span from the Wechsler Adult Intelligence Scale-Third Edition. Method: Sixty-three clinically referred adults with a diagnosis of epilepsy or suspected seizures were administered the Digit Span subtest of the Wechsler Adult.Expansion and re-examination of Digit Span effort indices on the WAIS-IV.Exploration of malingering indices in the Wechsler Adult Intelligence Scale-Fourth Edition Digit Span subtest.Of these indices, revised RDS and the Digit Span age-corrected scaled score provide the most accurate measure of performance validity among the three measures. ![]() The traditional RDS (≤ 7), revised RDS (≤ 11), and Digit Span age-corrected scaled score (≤ 6) had respective sensitivities of 39%, 39%, and 33%, and respective specificities of 82%, 89%, and 91%. Data were collected from 138 Veterans seen in a traumatic brain injury clinic. This study examined the relative diagnostic accuracy of the traditional RDS, an extended RDS including the new Sequencing task from the Wechsler Adult Intelligence Scale-IV, and the age-corrected scaled score, relative to performance validity as determined by the Test of Memory Malingering. Some authors have suggested that the age-corrected scaled score provides a more accurate measure of effort than RDS. N2 - Reliable Digit Span (RDS) is a measure of effort derived from the Digit Span subtest of the Wechsler intelligence scales. Outcome measures include the direction of the task (forwards or backwards), the longest sequence successfully reached and passed, and the total number of attempts.T1 - WAIS-IV reliable digit span is no more accurate than age corrected scaled score as an indicator of invalid performance in a veteran sample undergoing evaluation for mTBI. An RDS score of 7 is commonly referenced as indicative of invalid performance however, few studies have examined the classification accuracy of the RDS among individuals suspected for dementia. ![]() The participant's span is the longest number of sequential digits that can accurately be remembered. Scores are total span reached for forward and reverse digits and number of errors. The Reliable Digit Span (RDS) is a well-validated embedded indicator of performance validity. The task terminates when participants responded incorrectly on three occasions at a span length. The participant will hear a sequence of digits and then immediately be prompted to verbally repeat the sequence, either as it was heard (forwards), or in reverse order (backwards). If the participant responds correctly, the next trial presents a longer sequence. Participants are presented with a random series of digits, and are asked to repeat them in either the order presented (forward span) or in reverse order (backwards span). While superficially very similar tasks, forward and backwards span rely on somewhat separable cognitive capacities: the simpler forward span task requires verbal working memory and attention, while the backwards span task additionally tests cognitive control and executive function. Digit Span (DGS) is a measure of verbal short term and working memory that can be used in two formats, Forward Digit Span and Reverse Digit Span. This is a verbal task, with stimuli presented auditorily, and responses spoken by the participant and scored automatically by the software.
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