Self-reported awareness of performance in dementia
Self-reported awareness of performance in dementia
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DOI：
10.1016/j.cogbrainres.2005.05.001
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发表时间：
2005-09-01
期刊：
影响因子：
--
通讯作者：
Snow, AL
中科院分区：
文献类型：
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作者：
Graham, DP;Kunik, ME;Snow, AL
本研究的目的是检验痴呆症患者不会根据实际表现更新自我认知的理论。该实验比较了痴呆症患者和正常对照组在七项认知任务上的任务后表现感知和实际表现之间的差异。参与者包括来自休斯敦退伍军人事务疗养院、老年精神科住院部和门诊诊所以及贝勒医学院阿尔茨海默病中心的 35 名志愿者（12 名患有痴呆症，23 名没有痴呆症）。测量包括阿尔茨海默病评估量表认知子量表的 7 个子测试以及评估每个子测试的感知表现的标准化面试问题。患有痴呆症的参与者对表现的看法与正常对照组相似，但在所有七项认知筛查任务中的表现却要差得多。 31% 的正常对照者高估了自己的表现，而轻度至中度痴呆症患者的这一比例为 64%，中度至重度痴呆症患者的这一比例为 93%。我们的研究支持这样的理论：精神错乱的人不会更新他们对表现的自我认知。然而，很大一部分正常对照组对自身表现的评估也不准确。因此，事后测量提供了对自我意识机制的有用见解，但可能不是识别临床上显着的自我意识受损的适当评估工具。 (c) 2005 Elsevier B.V. 保留所有权利。
The purpose of this study was to test the theory that patients with dementia do not update their self-perceptions based on actual performance. This experiment compared differences between post-task perceptions of performance and actual performance in persons with dementia and normal controls on seven cognitive tasks. Participants included 35 volunteers (12 with dementia and 23 without) from the Houston Veterans Affairs nursing home and geropsychiatric inpatient unit and outpatient clinics and from the Baylor College of Medicine's Alzheimer's Disease Center. Measurements included 7 subtests of the Alzheimer Disease Assessment Scale-Cognitive Subscale and standardized interview questions assessing perceived performance on each of these subtests. Participants with dementia had similar perceptions of performance to normal controls yet evidenced much worse performance on all seven cognitive screening tasks. Thirty-one percent of normal controls over-estimated their performance, compared to 64% of those with mild-moderate dementia and 93% with moderate-severe dementia. Our study supports the theory that demented individuals do not update their self-perceptions of performance. However, a large portion of normal controls was also inaccurate evaluating their own performances. Thus, post-diction measures provide useful insight into the mechanisms of self-awareness but may not be appropriate assessment tools to identify clinically significant impaired self-awareness. (c) 2005 Elsevier B.V. All rights reserved.