This study investigated the utility of four WAIS-IV Digit Span (DS) indices (traditional Reliable Digit Span [RDS], RDS-Working Memory [RDS-WM], RDS-Revised [RDS-R], and DS Age-Corrected Scaled Score [ACSS]) as embedded performance validity tests (PVTs) among a sample of 342 consecutive adults referred for neuropsychological evaluation of ADHD. All DS indices had acceptable classification accuracy (areas under the curve: .73–.76) for detecting invalid performance with optimal cut-scores of RDS ≤7 (35% sensitivity/93% specificity), RDS-WM ≤7 (56% sensitivity/86% specificity), RDS-R ≤12 (48% sensitivity/85% specificity), and ACSS ≤7 (46% sensitivity/87% specificity). Although all indices were able to detect invalid performance, DS indices incorporating the more complex working memory trials of the task yielded the best accuracy for identification of invalid test performance among adults referred for ADHD evaluation.

本研究调查了四个 WAIS-IV 数字跨度 (DS) 指数（传统可靠数字跨度 [RDS]、RDS-工作记忆 [RDS-WM]、RDS-修订版 [RDS-R] 和 DS 年龄校正标度分数 [ACSS]）作为嵌入式性能有效性测试（PVT）在 342 名连续成年人的样本中被推荐用于 ADHD 的神经心理学评估。所有 DS 指数都具有可接受的分类准确度（曲线下面积：0.73–.76），用于检测无效性能，RDS ≤7（35% 灵敏度/93% 特异性）、RDS-WM ≤7（56%灵敏度/86% 特异性）、RDS-R ≤12（48% 灵敏度/85% 特异性）和 ACSS ≤7（46% 灵敏度/87% 特异性）。尽管所有指标都能够检测到无效性能，