Joy Stephen, Kaplan Edith, Fein Deborah
Albertus Magnus College, New Haven, CT 06511, USA.
Clin Neuropsychol. 2003 May;17(2):182-94. doi: 10.1076/clin.17.2.182.16495.
We analyzed WAIS-III/WMS-III standardization data for evidence of the construct validity and clinical utility of the Digit Symbol-Incidental Learning procedures (Pairing and Free Recall). Scores on both tests correlated moderately with WMS-III memory index scores (mean r=.38 for Pairing and .36 for Free Recall). Cutoff scores can be used to identify younger and older adults likely to suffer from memory impairment. In the standardization sample (which excludes neurological patients), these have moderate positive predictive power (averaging .56 if either test yields a positive finding), moderate negative predictive power (.76), and high specificity (.88), but low sensitivity (.35). In a clinical sample, the same cutoff scores were much more sensitive, correctly identifying 88% of a group of patients with Alzheimer's Disease. Examinees who obtain these low scores should receive follow-up memory testing. Very high scores are associated with a reduced risk of memory impairment.
我们分析了韦氏成人智力量表第三版（WAIS-III）/韦氏记忆量表第三版（WMS-III）的标准化数据，以寻找数字符号- incidental学习程序（配对和自由回忆）的结构效度和临床效用的证据。两项测试的分数与WMS-III记忆指数分数中度相关（配对的平均r = 0.38，自由回忆的平均r = 0.36）。临界分数可用于识别可能患有记忆障碍的年轻人和老年人。在标准化样本（不包括神经科患者）中，这些分数具有中度的阳性预测能力（如果任何一项测试得出阳性结果，平均为0.56）、中度的阴性预测能力（0.76）和高特异性（0.88），但敏感性较低（0.35）。在临床样本中，相同的临界分数敏感性更高，能正确识别出一组阿尔茨海默病患者中的88%。获得这些低分的受测者应接受后续的记忆测试。非常高的分数与记忆障碍风险降低相关。
