FOK产生机制的再验证

通过用有意义联系和无意义联系的两种中文词对作为识记材料,在以前实验研究基础上,进一步验证关于FOK(Feelingof Knowing)产生机制的两种理论假说,即靶项日记忆强度假说(或靶项目提取可能性假说)与线索熟悉性假说。实验结果表明,靶项目记忆强度和线索熟悉性程度都能决定FOK判断等级的高低,说明两种假说并非绝对对立,非此既彼。但此二因素都需达到一定程度,才能显著影响FOK判断等级的高低。     

FOK产生机制的重新检验

以中文低频字对为学习材料,采用被试内设计的方法对FOK产生机制,即靶项目强度、线索熟悉性以及两者之间联系强度对FOK的影响进行了重新检验。实验结果表明:单独的靶项目强度对FOK判断没有影响,而单独的线索熟悉性对FOK判断存在影响,线索与靶项目联结强度对FOK判断存在影响。线索熟悉性和联结强度对FOK的影响可能相互独立。     

学前儿童FOK判断及其产生机制的实验研究

FOK(Feeling—of—knowing)是元记忆监测性判断的一种重要形式,当前探讨的热点问题是FOK在记忆信息加工中的作用以及其背后的产生机制问题。关于其产生机制问题,目前已提出两种假说:即靶项目提取可能性假说和线索熟悉性假说。本实验的目的是揭露影响FOK判断的因素及FOK的产生机制。实验的另一个目的是探讨学前(大班)儿童被试是否有FOK判断的能力。实验被试是24名幼儿园大班的儿童,并使用了中文字词做学习材料,要求被试完成词对学习、FOK判断、迫选再认等一系列任务。实验结果表明:学前大班儿童有进行FOK判断的能力;本实验中影响FOK判断的因素主要是词对间有无意义联系,倾向于靶项目提取可能性假说。     

FOK产生机制的实验研究

采用Hart提出的RJR(回忆-FOK判断-再认)研究范式,通过两个实验对FOK产生机制的两种假说--线索熟悉性假说和靶项目提取可能性假说进行验证.实验一采用单因素被试内设计,即通过中、英文词对不同组合形成四种材料类型(中-中、英-中、中-英、英-英);实验二采用二因素被试内设计,即控制实验材料和呈现方式两个变量(2×2).结果表明,被试所做的FOK判断既不完全取决于线索熟悉.也不完全取决于靶项目的可提取性,而是取决于线索与靶子之间的联结强度.     

线索熟悉性与易接近性对FOK影响的实验研究

本研究目的探讨线索熟悉性和易接近性与FOK判断的关系。两个实验以中文词为材料．采用重复启动操纵线索的熟悉性,用联想集大小操纵易接近性,线索词和目标词之间无联想关系。实验结果表明：线索熟悉性和易接近性都有促进FOK判断的作用,但二者对FOK的作用是独立的,且不同步。文章最后讨论了线索熟悉性与易接近性的控制条件可能影响二者在FOK判断上的关系。     

FOK判断与可接近信息之间的关系

通过三个实验,用语义联想集大小不同的中文单字词研究了靶项目联想集的大小与FOK判断等级和准确性的关系。实验一通过两种不同联想集大小的靶子,比较外显的、提取出的信息和内隐的、语义网络中固有的被激活信息量对FOK判断等级和FOK判断准确性是否有不同的影响。实验二和实验三通过不同的靶子呈现时间和学习遍数,比较不同的识记强度对不同大小联想集的靶子的FOK判断等级和FOK判断准确性的影响。实验结果表明：FOK判断等级随外显的、提取出的信息总量的增多而增高,随内隐的、语义网络中固有的被激活信息量的增多而降低。FOK判断准确性随靶子本身的激活强度的增强而增高,随内隐的、语义网络中固有的被激活信息的激活强度的增强而降低,FOK判断准确性取决于这两种激活强度的综合作用。     

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。     

知道感与不知道感：两种不同的认知加工过程——一项来自行为实验的证据

脑成像研究表明,准确的知晓感（FOK）可以分为知道感和不知道感,两者可能依赖不同的大脑机制实现。该研究通过两个实验,检验了线索和靶子的频率对FOK判断准确性的影响,并在行为水平上考察了“知道感和不知道感可能通过不同的认知过程来实现”的假设。实验一表明：靶子字的频率对FOK判断的准确性有影响,即靶子为低频字时,FOK判断的准确性降低;同时,线索和靶子的字频对知道感和不知道感判断的等级没有影响。实验二显示：线索熟悉性只影响准确的不知道感判断等级,而靶项目强度只影响准确的知道感判断等级,即产生了非交叉的双重分离。综上,我们发现了靶子的字频对FOK判断准确性的影响,并从行为实验的角度证实,知道感和不知道感依赖不同的认知加工过程。     

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:是线索熟悉,还是目标提取?

以围棋定式为实验材料,检验了关于FOK判断的线索熟悉假说和目标提取假说。结果表明：在有线索可以利用的情况下,被试会依据线索的熟悉作出FOK判断;而在线索难以利用的情况下,被试就会依据目标的提取来作出FOK判断。该文还对FOK的研究方法提出了一点看法。     

Episodic feeling-of-knowing relies on noncriterial recollection and familiarity: Evidence using an online remember-know procedure

We examined the hypothesis that feeling-of-knowing judgments rely on recollection as well as on familiarity prompted by the cue presentation. A remember-know-no memory procedure was combined with the episodic FOK procedure employing a cue–target pair memory task. The magnitude of FOK judgments and FOK accuracy were examined as a function of recollection, familiarity, or the “no memory” option. Results showed that the proportion of R and K responses was similar. FOK accuracy and magnitude of FOK judgments were higher for R and K responses than for N responses. FOK accuracy related to R and K responses were above chance level, but FOK was not accurate in the “no memory” condition. Finally, both FOK magnitude and FOK accuracy were related more to recollection than to familiarity. These results support the hypothesis that both recollection and familiarity are determinants of the FOK process, although they suggest that recollection has a stronger influence.     

The combined contributions of the cue-familiarity and accessibility heuristics to feelings of knowing

A model for the basis of feeling of knowing (FOK) is proposed, which combines 2 apparently competing accounts, cue familiarity (L. M. Reder, 1987), and accessibility (A. Koriat, 1993). Both cue familiarity and accessibility are assumed to contribute asynchronously to FOK, but whereas the effects of familiarity occur early, those of accessibility occur later and only when cue familiarity is sufficiently high to drive the interrogation of memory for potential answers. General information questions were used to orthogonally manipulate cue familiarity and accessibility. As expected, both familiarity and accessibility enhanced FOK judgments, but the effects of accessibility were found mostly when familiarity was high. This interactive pattern was replicated when FOK judgments were delayed but not when they were immediate. The results support the proposed cascaded model of FOK but also imply a differentiation between 2 variants of the accessibility heuristic.     

The use of cue familiarity during retrieval failure is affected by past versus future orientation

Cue familiarity that is brought on by cue resemblance to memory representations is useful for judging the likelihood of a past occurrence with an item that fails to actually be retrieved from memory. The present study examined the extent to which this type of resemblance-based cue familiarity is used in future-oriented judgments made during retrieval failure. Cue familiarity was manipulated using a previously-established method of creating differing degrees of feature overlap between the cue and studied items in memory, and the primary interest was in how these varying degrees of cue familiarity would influence future-oriented feeling-of-knowing (FOK) judgments given in instances of cued recall failure. The present results suggest that participants do use increases in resemblance-based cue familiarity to infer an increased likelihood of future recognition of an unretrieved target, but not to the extent that they use it to infer an increased likelihood of past experience with an unretrieved target. During retrieval failure, the increase in future-oriented FOK judgments with increasing cue familiarity was significantly less than the increase in past-oriented recognition judgments with increasing cue familiarity.     

Caffeine cravings impair memory and metacognition

Cravings for food and other substances can impair cognition. We extended previous research by testing the effects of caffeine cravings on cued-recall and recognition memory tasks, and on the accuracy of judgements of learning (JOLs; predicted future recall) and feeling-of-knowing (FOK; predicted future recognition for items that cannot be recalled). Participants (N?=?55) studied word pairs (POND-BOOK) and completed a cued-recall test and a recognition test. Participants made JOLs prior to the cued-recall test and FOK judgements prior to the recognition test. Participants were randomly allocated to a craving or control condition; we manipulated caffeine cravings via a combination of abstinence, cue exposure, and imagery. Cravings impaired memory performance on the cued-recall and recognition tasks. Cravings also impaired resolution (the ability to distinguish items that would be remembered from those that would not) for FOK judgements but not JOLs, and reduced calibration (correspondence between predicted and actual accuracy) for JOLs but not FOK judgements. Additional analysis of the cued-recall data suggested that cravings also reduced participants’ ability to monitor the likely accuracy of answers during the cued-recall test. These findings add to prior research demonstrating that memory strength manipulations have systematically different effects on different types of metacognitive judgements.     

知道感（FOK）和不知道感（FOnK）的双向实验分离

为了实现FOK（feeling-of-knowing）和FonK（feeling-of-not-knowing）的双向分离,实验一采用高频词或者低频词为线索项目,检验FOK和FOnK的预测准确性。结果发现,在低频线索条件下FOK的预测准确性表现出高于FOnK的预测准确性的趋势,而在高频线索条件下则正好相反,但上述两组差异并未在统计学上达到显著的程度。实验二采用词－非词对和相关词对两种实验条件,在证明相关词对条件可以促进FOK并降低FOnK的同时,观察到词－非词条件可以促进FOnK并降低FOK,从而在较为严格的意义上证明了FOK和FOnK是两个不同的维度的量。上述结果为知道感的“双过程假设”提供了进一步的实验证据     

The effects of cue distinctiveness on odor-based context-dependent memory

The distinctiveness of an ambient odor was examined in relation to its success as a cue in contextdependent memory. Distinctiveness was examined in terms of both cue novelty and contextual appropriateness. Two experiments were conducted in which three different ambient odors that varied in familiarity and contextual appropriateness were manipulated at an incidental word learning encoding session and at a free recall retrieval session 48 h later. Experiment 1 revealed that when a novel ambient odor (osmanthus) was the available context cue, word recall was better than in any other condition. Further, among familiar odor cues, recall was better with a contextually inappropriate odor (peppermint) than with a contextually appropriate odor (clean fresh pine). Experiment 2 confirmed that superior word recall with osmanthus and peppermint depended on the odor cue’s being available at both encoding and retrieval, and that the relation of an odor to the situational context is a key factor for predicting its effectiveness as a retrieval cue.