Ecological validity of a simplified version of the multiple errands shopping test
Ecological validity of a simplified version of the multiple errands shopping test
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DOI：
10.1017/s1355617703910046
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发表时间：
2003-01-01
影响因子：
2.6
通讯作者：
Henman, C
中科院分区：
文献类型：
--
作者：
Alderman, N;Burgess, PW;Henman, C
Shallice 和 Burgess (1991) 报告了多重任务测试 (MET) 在区分三名保留高智商的额叶患者的执行缺陷方面的效用，这些患者在执行功能测试中没有受到损害。本研究的目的是确定简化版 MET (MET-SV) 对于临床实践中更常见的人群的使用价值。主要发现如下：1）该测试很好地区分了神经系统患者和对照组，并且当考虑到当前一般认知功能（WAIS-R FSIQ）的差异时，群体效应仍然存在。 2) 健康对照组 (n = 46) 表现的最佳预测因素是年龄和参与者寻求帮助的次数（请求越多，表现越差）。 3）在神经组中，出现了两种明显的失败模式，其表现要么是违反规则，要么是未能完成任务。这两种模式与日常生活中不同的执行障碍症状相关。 4) 患者不仅比对照犯更多的错误，而且犯的错误也不同。考虑到这一点的评分方法显着提高了测试灵敏度。 5）许多患者通过了执行额叶功能的传统测试，但仍未通过 MET-SV 这种模式与日常生活中观察到的执行不良症状密切相关。结果证明了该测试的临床实用性，并表明一般神经群体中多任务测试失败有两个常见且独立的原因：记忆功能障碍和启动问题。
Shallice and Burgess (1991) reported the utility of the Multiple Errands Test (MET) in discriminating executive deficits in three frontal lobe patients with preserved high IQ, who were otherwise unimpaired on tests of executive function. The aim of this study was to ascertain the value of a simplified version of the MET (MET-SV) for use with the range of people more routinely encountered in clinical practice. Main findings were as follows: 1) The test discriminated well between neurological patients and controls, and the group effects remained when the difference in current general cognitive functions (WAIS-R FSIQ) was taken into account. 2) The best predictors of performance in the healthy control group (n = 46) were age and the number of times participants asked for help (with more requests associated with poorer performance). 3) In the neurological group, two clear patterns of failure emerged, with performance either characterized by rule breaking or failure to achieve tasks. These two patterns were associated with different dysexecutive symptoms in everyday life. 4) The patients not only made more errors than controls, but also different ones. A scoring method that took this into account markedly increased test sensitivity. 5) Many patients passed traditional tests of executive frontal lobe function but still failed the MET-SV This pattern was strongly associated with observed dysexecutive symptoms in everyday life. The results demonstrate the clinical utility of the test, and suggest that there are two common and independent sources of failure on multitasking tests in a general neurological population: memory dysfunction, and initiation problems.