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Detecting malingered neurocognitive dysfunction using the reliable digit span in traumatic brain injury
Charles W Mathias1, Kevin W Greve, Kevin J Bianchini
1University of New Orleans LA 70148, USA.
Assessment
|September 10, 2002
Summary
The Reliable Digit Span (RDS) score effectively identifies malingered neurocognitive dysfunction in patients. This neurocognitive assessment tool demonstrated excellent accuracy in distinguishing genuine deficits from faked ones.
Area of Science:
- Neuropsychology
- Forensic Psychology
Background:
- Malingered neurocognitive dysfunction presents a challenge in clinical and forensic evaluations.
- Accurate detection is crucial for appropriate patient management and legal proceedings.
Purpose of the Study:
- To evaluate the efficacy of Greiffenstein's Reliable Digit Span (RDS) score in detecting malingered neurocognitive dysfunction.
- To determine the sensitivity, specificity, and predictive value of the RDS score.
Main Methods:
- The study included 54 patients with traumatic brain injury undergoing neuropsychological evaluation.
- A control group of 30 patients without external incentives was used for comparison.
- The Reliable Digit Span (RDS) test was administered as part of the WAIS-R or WAIS-III, and scores were analyzed.
Main Results:
- The Reliable Digit Span (RDS) score showed excellent classification accuracy in identifying malingered neurocognitive dysfunction.
- Sensitivity, specificity, and predictive power were examined across various score cutoffs.
Conclusions:
- The Reliable Digit Span (RDS) score is a highly effective tool for detecting malingered neurocognitive dysfunction.
- Clinical applications and potential limitations of using the RDS score are discussed.