South Texas Veterans Health Care System, San Antonio, TX, USA.
University of Illinois College of Medicine, Chicago, IL, USA.
Assessment. 2020 Oct;27(7):1399-1415. doi: 10.1177/1073191118804874. Epub 2018 Oct 6.
To supplement memory-based Performance Validity Tests (PVTs) in identifying noncredible performance, we examined the validity of the two most commonly used nonmemory-based PVTs-Dot Counting Test (DCT) and Wechsler Adult Intelligence Scale-Fourth edition (WAIS-IV) Reliable Digit Span (RDS)-as well as two alternative WAIS-IV Digit Span (DS) subtest PVTs. Examinees completed DCT, WAIS-IV DS, and the following criterion PVTs: Test of Memory Malingering, Word Memory Test, and Word Choice Test. Validity groups were determined by passing 3 (valid; = 69) or failing ⩾2 (noncredible; = 30) criterion PVTs. DCT, RDS, RDS-Revised (RDS-R), and WAIS-IV DS Age-Corrected Scaled Score (ACSS) were significantly correlated (but uncorrelated with memory-based PVTs). Combining RDS, RDS-R, and ACSS with DCT improved classification accuracy (particularly for DCT/ACSS) for detecting noncredible performance among valid-unimpaired, but largely not valid-impaired examinees. Combining DCT with ACSS may uniquely assess and best supplement memory-based PVTs to identify noncredible neuropsychological test performance in cognitively unimpaired examinees.
为了补充基于记忆的绩效有效性测试（PVT）在识别不可信表现方面的不足，我们研究了两种最常用的非记忆性 PVT——点数测试（DCT）和韦氏成人智力量表第四版（WAIS-IV）可靠数字跨度（RDS）——以及两种替代的 WAIS-IV 数字跨度（DS）子测试 PVT 的有效性。被试者完成了 DCT、WAIS-IV DS 以及以下标准 PVT：记忆伪装测试、单词记忆测试和单词选择测试。有效性组通过通过 3 个（有效；n=69）或失败 ⩾2 个（不可信；n=30）标准 PVT 来确定。DCT、RDS、RDS-修订版（RDS-R）和 WAIS-IV DS 年龄校正量表分数（ACSS）显著相关（但与基于记忆的 PVT 不相关）。将 RDS、RDS-R 和 ACSS 与 DCT 相结合，可以提高对有效无损伤但大部分有效损伤被试者不可信表现的分类准确性（特别是对于 DCT/ACSS）。将 DCT 与 ACSS 相结合，可能可以独特地评估和最好地补充基于记忆的 PVT，以识别认知无损伤被试者中不可信的神经心理测试表现。
