Effects of using same- versus alternate-form memory tests during short-interval repeated assessments in multiple sclerosis
Effects of using same- versus alternate-form memory tests during short-interval repeated assessments in multiple sclerosis
复制标题
DOI：
10.1017/s1355617705050782
复制
发表时间：
2005-10-01
影响因子：
2.6
通讯作者：
Benedict, RHB
中科院分区：
文献类型：
--
作者：
Benedict, RHB
重复的神经心理测试会产生练习效应，因为患者会熟悉测试材料和测试程序。使用替代形式可以防止学习特定的测试刺激，从而可能减轻练习效果。然而，改变形式会降低重测信度系数。我们的目的是检查随机分配到相同（SF）或交替形式（AF）条件的多发性硬化（MS）患者的重测效果。34例MS患者接受了神经心理学评估。成套测验包括加州语言学习测验II（CVLT-II）和简明视觉空间记忆测验修订版（BVMT-R），这两种记忆测验是由最近召开的共识小组推荐的。患者被随机分配到SF或AF组，然后在基线和1周后的随访检查时进行测试。方差分析检验（ANOVA）显示组X时间交互作用显著，SF患者的增益大于AF患者。SF练习效果往往很大，损害了测试的有效性。AF组的可靠性系数相等或更高，这一发现归因于天花板效应和SF组在重测时的方差减少。研究结果的普遍性可能仅限于短的重测间隔和MS人群。尽管如此，我的结论是，CVLT-II和BVMT-R交替形式的使用可能有助于保持测试的有效性，而不损害重测信度。
Repeated neuropsychological testing gives rise to practice effects in that patients become familiar with test material as well as test-taking procedures. Using alternate forms prevents the learning of specific test stimuli, potentially mitigating practice effects. However, changing forms could diminish test-retest reliability coefficients. Our objective was to examine test-retest effects in multiple sclerosis (MS) patients randomly assigned to same- (SF) or alternate-form (AF) conditions. Thirty-four MS patients underwent neuropsychological evaluation. The battery included the California Verbal Learning Test II (CVLT-II) and the Brief Visuospatial Memory Test-Revised (BVMT-R), memory tests recommended by a recently convened consensus panel. Patients were randomly assigned to SF or AF groups and then tested at baseline and follow-up examination 1 week later. Analysis of variance tests (ANOVAs) revealed significant group X time interactions, with SF patients showing greater gain than AF patients. SF practice effects were often large, compromising test validity. Reliability coefficients were either equivalent or higher in the AF group, a finding attributed to ceiling effects and reduced variance in the SF group at retest. The generalizability of the findings may be limited to short test-retest intervals and the MS population. Nevertheless, I conclude that the use of CVLT-II and BVMT-R alternate forms likely helps preserve test validity without compromising test-retest reliability.