RDS is related to and likely impacted by various neurological and cognitive challenges faced by brain tumor survivors. Differences were also found between passing and failing survivors at lower cutoffs. At the ≤7 cutoff, passing and failing survivors demonstrated significant differences across all variables of interest, while passing and failing controls differed only on Vocabulary. RDS was correlated with all three variables of interest in survivors but only Vocabulary in controls. Participants were divided into passing and failing groups at each RDS cutoff, and ANCOVAs for each of the three variables of interest covaried for age at the examination were run. Analyses were covaried for age at examination. To investigate, RDS scores were calculated and correlated with the Neurological Predictor Scale, an informant-reported Activities of Daily Living score, and a proxy measure of intelligence (Vocabulary) for 83 adult survivors of childhood brain tumors and 105 healthy controls. 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.The Reliable Digit Span (RDS) is a performance validity test (PVT) used widely within non-clinical samples, but its utility is in question in clinical groups with cognitive impairment.Prevalence of below-criterion Reliable Digit Span scores in a clinical sample of older adults.Retrospective Analysis of the Test of Memory Malingering in a Low Intellectual Quotient Intractable Epilepsy Sample.Expansion and re-examination of Digit Span effort indices on the WAIS-IV.They're not just little adults: The utility of adult performance validity measures in a mixed clinical pediatric sample.Use of the Wechsler Adult Intelligence Scale Digit Span subtest for malingering detection: a meta-analytic review.Exploration of malingering indices in the Wechsler Adult Intelligence Scale-Fourth Edition Digit Span subtest.
Performance validity testing in a clinical sample of adults with sickle cell disease.Clinical utility of reliable digit span in assessing effort in children and adolescents with epilepsy.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.CONCLUSIONS: Preliminary findings indicate that cutoff scores of ≤6 and ≤7 on RDS are not appropriate in adults with epilepsy, especially in individuals with low average IQ or below. Preliminary results suggest that an RDS cutoff score of ≤4 may be more appropriate in a clinically referred adult epilepsy population with a low average IQ or lower. Given the less than ideal specificity rate associated with each of these cutoff scores, together with their strong association to cognitive factors, secondary analyses were conducted to identify more optimal cutoff scores. Findings also revealed that RDS scores were positively related to attention and intellectual functioning. RESULTS: Previously established cutoff scores of ≤6 and ≤7 on RDS yielded a specificity rate of 85% and 77% respectively.
#Reliable digit span trial
Most participants (98%) passed Trial 2 of the Test of Memory Malingering (TOMM), achieving a score of ≥45. METHOD: Sixty-three clinically referred adults with a diagnosis of epilepsy or suspected seizures were administered the Digit Span subtest of the Wechsler Adult Intelligence Scale (WAIS-III or WAIS-IV). Much of the research to date regarding performance validity, including use of RDS, has been done with adults with an overrepresentation of traumatic brain injury.
This investigation aims to determine whether these previously established RDS cutoff scores could detect suboptimal effort in adults with epilepsy. Reliable Digit Span (RDS Greiffenstein, Baker, & Gola, 1994) is a well-established embedded measure of performance validity (Boone, 2007 Schroeder, Twumasi-Ankrah, Baade, & Marshall, 2012) that can be derived from standard DS administration. Prior research has shown that cutoff scores of ≤6 or ≤7 on Reliable Digit Span (RDS) can detect suboptimal effort across numerous adult clinical populations however, these scores have not been validated for that purpose in an adult epilepsy population. N2 - OBJECTIVE: Assessment of performance validity is a necessary component of any neuropsychological evaluation. JF - Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists T1 - Reliable Digit Span: Does it Adequately Measure Suboptimal Effort in an Adult Epilepsy Population?
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