Cognitive components of deficit awareness in Alzheimer's disease
Cognitive components of deficit awareness in Alzheimer's disease
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DOI：
10.1037//0894-4105.16.3.359
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发表时间：
2002-07-01
期刊：
影响因子：
2.4
通讯作者：
Vasterling, JJ
中科院分区：
文献类型：
--
作者：
Duke, LM;Seltzer, B;Vasterling, JJ
采用绩效预测-后测和问卷差异（QD）范式对24例阿尔茨海默病（AD）患者及其配偶（共48名参与者）的认知缺陷进行了研究。参与者评估了他们自己的记忆表现，以及配偶和一个虚构的、有记忆障碍的病人在录像带上的表现。患者对自我表现有过高的预测，但对位置的高估程度有所下降。患者和护理人员准确地估计了护理人员的表现，但高估了虚构患者的表现。QD数据显示，与护理人员的报告相比，患者低估了他们执行日常功能任务的困难。意识缺陷是一种复杂的能力，涉及可分离的认知过程。AD患者可能表现出完整的记忆功能障碍的即时意识，但不能将记忆功能障碍事件纳入广义的自我信念系统。
Awareness of deficit was examined in 24 patients with Alzheimer's disease (AD) and their spouses (for a total of 48 participants) using performance prediction-postdiction and questionnaire discrepancy (QD) paradigms. Participants estimated their own memory performances as well the performances of spouses and of a fictional, memory-disordered patient observed on videotape. Patients overpredicted self-performances, but the extent of overestimation decreased for postdictions. Patients and caregivers accurately estimated caregiver performances but overestimated performances of the fictional patient. QD data revealed that patients underestimated their difficulties performing daily functioning tasks as compared with caregiver reports. Awareness of deficit is a complex ability, involving dissociable cognitive processes. AD patients may display intact immediate awareness of memory dysfunction but fail to incorporate incidents of memory failure into generalized self-belief systems.