4～6岁儿童元记忆监测判断的发展

采用不同难度图对为记忆任务,考察了4～6岁儿童学习难易判断(EOL), 学习判断（JOL）和提取自信心判断(JOC)的发展特点。结果表明：三种元记忆监测水平随年龄增长均不断提高,任务难度不同三种元记忆监测发展水平不同,对低难度任务的元记忆监测显著好于高难度任务;三种元记忆监测在低难度任务下没有发展速度差异,高难度任务下4～5岁时回溯性监测(JOC)发展较快,5～6岁前瞻性监测(EOL/JOL)发展加速;有效元记忆监测存在任务难度差异和年龄差异。     

元记忆监测研究的横向比较

元记忆监测在记忆活动中发挥重要作用。元记忆自FOK研究开始,到理论框架的提出,各种理论逐渐发展成熟。文章从元记忆监测总过程的视角对近年来EOL、FOK、JOL、JOC等元记忆监测成分的研究范式、认知机制及神经机制进行了横向比较,概述了元记忆监测研究的进展及动态。     

词频和年级对FOK判断的影响

本实验以识记材料的词频高低和被试年级为自变量对被试元记忆监测的FOK(feeling of knowing)判断进行研究。实验采用Hart提出的RJR(回忆—FOK判断—标准测验 )的经典范式。结果表明 :被试的年级影响FOK判断等级和准确性 ,大学生的FOK判断等级和准确性均高于高一年级学生 ;识记材料词频影响FOK判断等级的高低 ,不影响FOK判断准确性 ,被试对高频词对的FOK判断等级高于对低频词对的FOK判断等级 ,但FOK判断准确性无明显差异。     

自由回忆中元记忆监控的作用及其影响因素

采用“类信号检测论方法”,通过两个实验,研究了在记忆信息提取过程中元记忆的预见性监测判断（Feeling-of-knowing）和元控制的作用及其影响因素。实验一探讨了识记材料的难易、识记遍数对元监测判断以及输出控制中的反应标准是否有影响;实验二探讨了严格和宽松的奖惩条件对输出控制中反应标准的影响。用计算机随机呈现识记用的词表材料,识记之后让被试进行FOK等级判断和自由回忆,再用“类信号检测论”方法统计实验数据,分析各种条件下回忆成绩、FOK判断等级,计算出相应的符合率和反应标准。实验一结果表明,不同材料难度和识记遍数下的回忆成绩和FOK判断等级差异显著,但输出控制中的反应标准值没受这些因素的影响;实验二结果是严格和宽松奖惩条件下的反应标准值差异显著,严格条件下的反应标准显著高于宽松条件下的反应标准,表明奖惩条件对信息提取中的反应标准有显著影响     

FOK研究中一种新的标准测验——过度重复学习

提出FOK研究中一种新的标准测验形式——过度重复学习,并验证过度重复学习作为FOK研究的标准测验的可行性;另外还比较了作为标准测验,过度重复学习与再认的差别。同时,还探索了FOK判断中存在的两种错误类型——替代性错误和忽略性错误在FOK判断等级和标准测验成绩方面的差异。两个实验结果表明：FOK判断在预期随后的标准测验(过度重复学习和再认)成绩上是有准确性的;过度重复学习可以作为一种标准测验。实验结果还显示：替代性错误比忽略性错误的FOK判断等级要高;且无论是用再认还是用过度重复学习做标准测验,都能检验出两种错误类型项目在记忆激活强度上的差异。     

上下文熟悉效应对元记忆监测和记忆的影响

在认知任务中,伴随编码和检索的外围信息被称为上下文,其本身并不是编码或检索的目标。如果学习时的上下文在其后进行提取时重复出现,不管是否对应之前的学习项目,都会增加个体再认正确的概率。这种由于上下文增强项目熟悉感而促进记忆效果的现象就称为上下文熟悉效应。本研究通过两个实验探究上下文熟悉效应对元记忆监测及记忆的影响机制。其中,元记忆监测是以学习判断和信心判断为指标。记忆成绩则是以再认正确率为指标。研究结果显示:第一,上下文熟悉效应影响元记忆监测:学习判断等级上,恢复条件显著高于新条件,且不受任务难度影响; 信心判断等级上,简单任务时恢复条件与新条件无显著差异,困难任务时恢复条件显著高于新条件。第二,上下文熟悉效应影响记忆成绩:再认成绩上,简单任务时新条件显著高于恢复条件; 困难任务时恢复条件显著高于新条件。研究得出结论:上下文熟悉效应对元记忆监测和记忆都有显著影响,任务难度起调节作用。     

心理负荷对元记忆监测准确性及偏差的影响

以汉字再认任务为载体, 采用两因素被试内设计, 考察任务所导致的心理负荷水平, 以及学习判断(JOL)和信心判断(JOC)两种监测方式, 对元记忆监测效果的影响。对监测效果的衡量分别使用了相对准确性, 绝对准确性, 以及判断偏差三种指标。结果发现, 个体在任务过程中的心理负荷水平会影响其对任务解决过程的监测准确性:心理负荷水平越高, 元记忆监测的准确性越低。心理负荷水平还会影响元记忆监测的判断偏差:心理负荷处于中等偏低水平时, 监测不容易出现偏差;心理负荷处于中等偏高水平时, 个体表现出过高自信;但当心理负荷达到较高水平后, 判断偏差消失;随着心理负荷水平继续增大, 个体又表现出过低自信。     

客体记忆能力与元记忆能力发展的比较

采用2×3×2混合设计,以任务难度预见(EOL)和提取自信度判断(JOC)等级和记忆成绩及两者间的相关为指标,探讨老年人和青年人客体记忆能力的发展与元记忆能力的发展之间的差异.研究结果:(1)记忆能力随龄老化.元记忆能力随龄不变.(2)提取方式影响记忆成绩和EOL准确性,不影响JOC准确性.(3)记忆监测种类对记忆监测准确性有影响.     

倒班与正常班医护人员记忆特点的比较

20—35岁倒班和正常班医护人员400名经问卷调查睡眠情况之后,对其中88名受试者给予记忆测验。测验材料为“临床记忆量表”,包括指向记忆、联想学习、图象自由回忆、无意义图形再认和人像特点联系回忆五项分测验。研究结果表明:倒班医护人员在值夜班期间睡眠质量受到明显影响,在上正常白班期间睡眠质量虽有所改善,但仍不及正常班医护人员;倒班组和正常班组各项记忆测验成绩均无显著性差异,但两组记忆特点有些不同。     

“知道自己知道”与“知道自己不知道”——一项有关知道感（FOK）的脑成像研究

采用事件相关功能性磁共振成像技术（event-related fMRI）以及在FOK（feeling-of-knowing）研究中常用的“线索回忆-FOK判断-再认测验”（Recall-Judgment-Recognition,RJR）程序,以汉字词对为识记材料,研究了FOK判断中的大脑活动区域。根据FOK判断的正负以及其后的再认测验的对错,实验将FOK判断的项目分为四类：PP项目（正性FOK判断,正确再认）,NN（负性FOK判断,错误再认）,NP（负性FOK判断,正确再认）以及PN（正性FOK判断,错误再认）。脑成像的分析结果显示：准确的FOK预测（即PP与NN项目）与不准确的FOK预测（即NP与NP项目）在脑活动上没有显著的差异。而进一步分析表明,这种“无差异”的现象可能是由于PP项目与NN项目激活了不同的脑活动模式所造成的。具体地讲,相对于NN项目而言,PP项目伴随有明显的左侧前额叶（BA 8区）的活动。这一观察提示我们：知道感（PP）与不知道感（NN）可能是由不同的脑神经网络所支持、并通过不同的认知过程来实现的。     

学习困难儿童的元记忆监测与控制特点

以有无意义联系的两种中文词对为材料,采用2×3×2混合实验设计,对小学三到五年级学习困难儿童的元记忆监测、控制水平与学优儿童之间的差异及其发展特点进行研究。结果表明：1．学习困难儿童在三种元记忆监测判断等级上均显著低于学优儿童。2．学习困难儿童具有元记忆控制能力,但其控制水平相对低于学优儿童。3．学习困难儿童的元记忆监测判断和学习时间分配之间存在交互影响。4．学习困难儿童的元记忆监测和控制水平存在较为复杂的发展特点。据此得出结论认为,学习困难儿童的元记忆监测与控制能力都比学优儿童差,同时也表现出一定的发展趋势。     

Monitoring processes and metamemory experience in patients with dysexecutive syndrome

The aim of the present study was to determine whether monitoring measures are differentially disturbed in dysexecutive patients after frontal lesions. Twelve dysexecutive patients and 12 healthy controls were administered a paired-associates learning task. Their performances on recall prediction, judgment-of-learning (JOL), and feeling-of-knowing judgment (FOK) were then compared. The results revealed that the two groups differed only on accuracy measures of the FOK paradigm. The study of the overall correlations between the three measures of metamemory revealed a significant relation between recall prediction and accuracy measures of the JOL. We failed to find any significant correlation with the accuracy measures of the FOK. Taken together, our data confirm that metamemory experience is not a unitary construct but rather a group of distinct and quite independent mechanisms.     

Consciousness in Schizophrenia: A Metacognitive Approach to Semantic Memory

Recent studies have shown that schizophrenia may be a disease affecting the states of consciousness. The present study is aimed at investigating metamemory, i.e., the knowledge about one's own memory capabilities, in patients with schizophrenia. The accuracy of the Confidence level (CL) in the correctness of the answers provided during a recall phase, and the predictability of the Feeling of Knowing (FOK) when recall fails were measured using a task consisting of general information questions and assessing semantic memory. Nineteen outpatients were paired with 19 control subjects with respect to age, sex, and education. Results showed that patients with schizophrenia exhibited an impaired semantic memory. CL ratings as well as CL and FOK accuracy were not significantly different in the schizophrenic and the control groups. However, FOK ratings were significantly reduced for the patient group, and discordant FOK judgments were also observed more frequently. Such results suggest that FOK judgments are impaired in patients with schizophrenia, which confirms that schizophrenia is an illness characterized by an impaired conscious awareness of one's own knowledge.     

间隔学习与测试效应对学习判断的影响

文章两个实验用于研究间隔学习和测试效应对即刻学习判断及其准确性的影响,结果表明：（1）间隔学习促进记忆保持力,降低即刻学习判断中对困难学习材料的高估并提高学习判断相对准确性。（2）重学前预测试具有增强记忆痕迹的功能,在间隔学习的基础上显著提高了学习判断相对准确性。（3）外部线索应当区分,间隔学习和预测试属于不同的外部线索。     

Processing similarity does not improve metamemory: evidence against transfer-appropriate monitoring

The transfer-appropriate monitoring (TAM) hypothesis of metamemory predicts that judgment of learning (JOL) accuracy should improve when conditions during JOLs closely match conditions of the memory test. The authors devised 5 types of delayed JOLs for paired associates and varied them along with the type of memory test (cued recall or recognition). If the TAM hypothesis is correct, JOL and test type should interact to influence metamemory. Contrary to TAM, metamemory accuracy did not improve when JOL and test conditions matched but instead tended to vary according to whether the answer was apparent at time of JOL. Memory test scores and JOL magnitude were both greater when the correct target was evident during JOLs. Overall, the results are largely consistent with a monitoring retrieval view of delayed JOLs and do not support TAM as a viable account of JOL accuracy.     

Are you sure you forgot? Feeling of knowing in directed forgetting.

One significant issue in metamemory is how variables increasing memorability affect metamemory. Previous research has produced inconsistent results. The effect of directed forgetting on the magnitude and accuracy of feeling-of-knowing (FOK) judgments was investigated. Participants were presented with word pairs, some to be remembered and some to be forgotten, and then were asked to recall all target words regardless of initial instructions. For unrecalled items, they were asked to give FOK judgments about performance in a future memory task: a cued stem-completion task (Experiment 1) or a recognition test (Experiment 2). This encoding manipulation increased both the memory performance and the magnitude of FOK judgments. However, no such effect on the accuracy of FOK judgments was observed.     

Episodic feeling-of-knowing accuracy and cued recall in the elderly: evidence for double dissociation involving executive functioning and processing speed

This research investigated adult age differences in a metamemory monitoring task-episodic feeling-of-knowing (FOK) and in an episodic memory task-cued recall. Executive functioning and processing speed were examined as mediators of these age differences. Young and elderly adults were administered an episodic FOK task, a cued recall task, executive tests and speed tests. Age-related decline was observed on all the measures. Correlation analyses revealed a pattern of double dissociation which indicates a specific relationship between executive score and FOK accuracy, and between speed score and cued recall. When executive functioning and processing speed were evaluated concurrently on FOK and cued recall variables, hierarchical regression analyses showed that executive score was a better mediator of age-related variance in FOK, and that speed score was the better mediator of age-related variance in cued recall.