Department of Psychology.
Department of Psychiatry and Biobehavioral Sciences.
Neuropsychology. 2022 Sep;36(6):540-551. doi: 10.1037/neu0000840. Epub 2022 Jun 23.
Memory deficits in individuals with schizophrenia are well-established, but less is known about how schizophrenia affects metacognitive processes such as metamemory. We investigated metamemory ability using the value-directed remembering task, which assesses the degree to which participants use value cues to guide their learning of a list of items (i.e., their memory selectivity).
Participants were patients undergoing treatment following a recent first episode of schizophrenia ( = 20) and demographically comparable healthy controls ( = 18). Participants viewed six lists of 24 words where each word was paired with either a low value (1-3 points) or a high value (10-12 points), and they were instructed to maximize their score on free recall tests given after each list. After the final free recall test, participants completed a recognition test where they gave remember/know judgments.
On tests of free recall, patients showed reduced memory selectivity relative to healthy controls. On the recognition test, patients failed to show an effect of value on recognition of nonrecalled words, in contrast to healthy controls, who showed a significant value effect that was characterized by greater "remember" judgments. Patients initially overestimated their memory capacity but were able to adjust their estimates to be more accurate based on task experience. Patients' self-reports of memory selectivity were unrelated to their actual memory selectivity.
Patients with first-episode schizophrenia had substantial impairments on the value-directed remembering task, but areas of preserved metamemory ability were also observed. These findings have potential implications for cognitive training interventions. (PsycInfo Database Record (c) 2022 APA, all rights reserved).
个体精神分裂症患者的记忆缺陷是明确的,但对于精神分裂症如何影响元认知过程,如元记忆,知之甚少。我们使用价值导向记忆任务来研究元记忆能力,该任务评估参与者使用价值线索指导他们学习一系列项目(即他们的记忆选择性)的程度。
参与者为近期首发精神分裂症后接受治疗的患者(n=20)和在人口统计学上可比的健康对照组(n=18)。参与者观看六组 24 个单词,每个单词都与低值(1-3 分)或高值(10-12 分)配对,他们被指示在每次列表后进行的自由回忆测试中最大化他们的分数。在最后一次自由回忆测试后,参与者完成了识别测试,他们在识别测试中给出了记住/知道的判断。
在自由回忆测试中,患者的记忆选择性低于健康对照组。在识别测试中,与健康对照组不同,患者未能表现出价值对未回忆单词的识别的影响,而健康对照组表现出显著的价值效应,特征是更多的“记住”判断。患者最初高估了他们的记忆能力,但能够根据任务经验调整他们的估计以使其更加准确。患者对记忆选择性的自我报告与他们实际的记忆选择性无关。
首发精神分裂症患者在价值导向记忆任务中存在严重障碍,但也观察到元记忆能力的保留区域。这些发现对认知训练干预具有潜在意义。