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Evaluating the accuracy of the Wechsler Memory Scale-Fourth Edition (WMS-IV) logical memory embedded validity index for detecting invalid test performance

机译:评估Wechsler内存量表第四版(WMS-IV)逻辑内存嵌入式有效性索引的准确性,用于检测无效的测试性能

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摘要

mbedded performance validity tests (PVTs) allow for continuous assessment of invalid performance throughout neuropsychological test batteries. This study evaluated the utility of the Wechsler Memory Scale-Fourth Edition (WMS-IV) Logical Memory (LM) Recognition score as an embedded PVT using the Advanced Clinical Solutions (ACS) for WAIS-IV/WMS-IV Effort System. This mixed clinical sample was comprised of 97 total participants, 71 of whom were classified as valid and 26 as invalid based on three well-validated, freestanding criterion PVTs. Overall, the LM embedded PVT demonstrated poor concordance with the criterion PVTs and unacceptable psychometric properties using ACS validity base rates (42% sensitivity/79% specificity). Moreover, 15-39% of participants obtained an invalid ACS base rate despite having a normatively-intact age-corrected LM Recognition total score. Receiving operating characteristic curve analysis revealed a Recognition total score cutoff of <61% correct improved specificity (92%) while sensitivity remained weak (31%). Thus, results indicated the LM Recognition embedded PVT is not appropriate for use from an evidence-based perspective, and that clinicians may be faced with reconciling how a normatively intact cognitive performance on the Recognition subtest could simultaneously reflect invalid performance validity.
机译:Mbedded性能有效性测试(PVT)允许在整个神经心理学测试电池中连续评估无效性能。本研究评估了使用用于WAIS-IV / WMS-IV努力系统的高级临床解决方案(ACS)的嵌入式PVT,评估了Wechsler Memory Stuce-第四版(WMS-IV)逻辑存储器(LM)识别评分的效用。这种混合的临床样本由97个总参与者组成,其中71名,其中71人被归类为有效,26个无效,基于三个良好的验证,独立的独立标准PVT。总的来说,LM嵌入式PVT通过ACS有效性基本速率(42%灵敏度/ 79%特异性),LM嵌入式PVT与标准PVT和不可接受的心理模量特性表现出差。此外,虽然,15-39%的参与者尽管具有规范性完整的年龄纠正的LM识别总分,但仍获得了无效的ACS基础率。接受操作特征曲线分析显示识别总分截止<61%的校正改善的特异性(92%),而敏感性较弱(31%)。因此,结果表明LM识别嵌入式PVT不适合于从基于证据的角度使用,并且该临床医生可以核对识别子测试上的规范性完整认知性能如何同时反映无效的性能有效性。

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