负性情绪词语在外显和内隐记忆测验中的定向遗忘效应

以两类具有不同负性情绪强度值的高频汉语双字词为材料,采用项目法定向遗忘范式,探究负性情绪词语在外显和内隐记忆测验中是否存在定向遗忘效应。结果显示,(1)在外显记忆测验中,强、弱负性词均出现了显著的定向遗忘并且弱负性词的定向遗忘效应大于强负性词;(2)在内隐记忆测验中,只有弱负性词出现了显著的定向遗忘,而强负性词则无。可见,内隐记忆测验中的定向遗忘效应对负性信息比外显记忆测验更加敏感。     

大学生性别情绪刻板印象的内隐和外显研究

为了了解不同性别大学生的性别情绪刻板印象,并分析内隐和外显测验的关系,对280名大学生进行了外显连线测试,对87名大学生进行了内隐联想测验。结果发现:在内隐和外显测验中,男女大学生均存在性别情绪刻板印象,将男性名字更多地与愤怒词相联系,将女性名字更多地与高兴词相联系;男女大学生的性别情绪刻板印象程度存在极其显著的差异,女生更明显地表现出"男性更容易愤怒、女性更容易高兴"的偏见;被试的内隐和外显性别情绪刻板印象相关不显著,是两个不同的建构。     

词频、测验方式影响单字法定向遗忘的实验研究

单字法定向遗忘一直是记忆研究的热点.本文引入词频(高频词、低频词)和测验方式(内隐记忆测验、外显记忆测验)变量继续考察单字法定向遗忘,结果显示:(1)低频词语的内隐和外显记忆测验中都出现了显著的定向遗忘效应;(2)高频词语的外显记忆测验中出现了明显的定向遗忘效应,而在内隐记忆测验中却未发现定向遗忘效应;(3)单字法定向遗忘的机制是复述和提取抑制.     

自传体记忆的情绪对其相关信息内隐提取的影响

本研究主要考察自传体记忆本身的情绪是否影响该记忆相关信息的内隐提取过程。取大学生15人完成实验, 实验分为两部分：记忆提取和词汇判断。首先在记忆提取阶段, 要求被试根据词对(形容词-中性名词)提取积极、消极和中性情绪色彩的自传体记忆事件。接着在词汇判断任务中, 要求被试对包含提取过记忆的中性名词的词语进行词和非词的判断, 并且记录相应的脑电波。结果发现：(1)被试按要求成功提取了积极、消极和中性三类自传体记忆事件。词汇判断任务中, 内隐提取三类自传体记忆信息的反应时和正确率均无显著差异。(2)相比于积极、中性自传体记忆信息, 消极自传体记忆信息提取的过程中的ERP波幅更大, 更偏向于正向。这表明自传体记忆信息的内隐提取受到记忆本身情绪的影响, 消极自传体记忆信息提取需要付出更多资源。     

大学生感恩内隐效应的实验研究

研究探讨内隐联想测验(Implicit Association Test,IAT)和Go/No-go联想任务测验(Go/No-go Association Task, GNAT)测量大学生感恩的可行性,并分析内隐感恩与外显感恩的关系。预备性研究从现代汉语字典中挑选自我词/他人词各16个,从汉语成语大辞典中挑选出与感恩相关的积极词/消极词各20个,根据65位大学生的评定结果筛选出自我词/他人词各8个,积极词/消极词各8个,用于正式研究。正式研究采用IAT、GNAT感恩测量程序和青少年感恩量表(Adolescent Gratitude Scale,AGS),对155名大学生同时进行IAT、GNAT及外显感恩的测量。结果发现:(1)大学生普遍具有积极的内隐感恩,内隐感恩不存在性别、生源地和独生与否等人口统计学指标上的显著差异;(2)大学生的内隐感恩与外显感恩相关不显著,是两个不同的建构;(3)采用IAT和GNAT研究感恩是可行的。     

内隐与外显记忆的编码与提取非对称性关系

实验采用“学习-测验”范式, 考察在编码或提取中分别附加的干扰任务对内隐测验或外显测验中获得的ERP新旧效应产生的影响。结果表明, 在内隐测验中, 编码干扰对随后测验中的ERP新旧效应没有产生影响, 而提取干扰却改变了300~500ms新旧效应的脑区位置, 破坏了500~700ms新旧效应; 与之相反, 在外显测验中, 编码干扰破坏了500~700ms新旧效应, 而提取干扰对这一效应没有产生影响, 即编码与提取干扰对内隐或外显测验中的ERP新旧效应都产生了非对称性的影响, 但又存在着差异, 从而为两种记忆在编码与提取加工的关系上存在的分离现象提供了神经生理方面的证据。     

汉字的反知觉干扰效应:来自ERP的证据

采用"学习-测验"范式,在知觉辨认测验(内隐测验)和再认测验(外显测验)中,用事件相关电位探索汉字内隐、外显记忆的"知觉干扰效应"。结果:行为上,内隐记忆不受知觉干扰条件的影响;外显记忆受知觉干扰条件影响而显著降低;脑电上,内隐测验两种条件的ERP无显著差异;外显测验在550～600ms,知觉干扰条件比无干扰条件诱发了更负的ERP。实验在行为和脑电水平上都表现出内隐、外显记忆的分离,出现汉字的"反知觉干扰效应"。     

情绪名词的具体性效应：来自ERP的证据

词汇的具体性和情绪性是影响词汇加工的不同因素, 高具体性和情绪性都能够促进词汇的加工。本研究同时操纵词汇的具体性和情绪性, 使用词汇判定任务和愉悦度判断任务, 探讨了情绪名词的具体性效应及其具体性效应是否受词汇情绪信息的影响。结果发现：情绪名词的具体性效应受内隐或外显情绪条件的影响, 具体的情绪词比抽象的情绪词反应时间更短、正确率更高, 诱发了更大的N400和减小的LPC, 但LPC的具体性效应只表现在内隐情绪任务中。词汇的具体性和情绪性的相互影响发生在内隐情绪任务中的语义加工阶段, 正性、负性的具体词和抽象词的加工在N400成分上差异不显著, 而中性具体词和抽象词在N400成分上差异显著, 说明词汇的情绪信息为抽象词的加工提供了充分的语境, 因此消除了具体词的加工优势。     

自尊水平与评价性信息的选择性记忆

245名被试完成外显Rosenberg量表、内隐IAT测验和记忆测验。实验结果发现,1）外显自尊有效地预测消极信息的回忆量,低外显自尊个体对消极信息的回忆量显著高于高外显自尊个体,而两类被试对积极信息的回忆量上差异不显著,实验结果证实了相关模型的假设。2）无论是积极信息的回忆率还是消极信息的回忆率,不同内隐自尊水平的个体的回忆量差异不显著,外显自尊与内隐自尊的交互作用与其关系也不紧密,试图通过外显手段区分内隐层面上有差异的两类个体,似乎是行不通的。     

睡眠学习的ERP研究

夜间用脑电监测被试睡眠状态,并反复播放英语单词和中文对译词,第二天用词汇决定任务检查学习效果,并记录ERP,结果发现：（1）与未学过的英—中词对相比,被试对学过的词对中中文词的反应时明显缩短;（2）学过的词对中中文词引发的N600的波幅比未学过的明显降低。以上结果表明睡眠学习效果在内隐记忆测验中明显。另外发现被试几乎不能在播放学过的英语词时说出中文对译词,与未学过的词对相比没有显著差别,提示睡眠学习效果在外显记忆测验中不明显。以上结果表明,在本实验条件下,间接测验比直接测验更敏感。     

支持性条件对记忆年龄差异的影响

通过三个实验探讨支持性条件对记忆年龄差异的影响。结果表明,在操作条件下记忆高语义关联度项目时,有缩小记忆年龄差异的作用,(实验一);线索回忆时,对于低语义关联度项目,青年人可从名词线索中获得更多支持(实验二);当使用具范畴组织关系的词表作为记忆材料时,操作条件和范畴线索的结合对老年人记忆有干扰作用(实验三)。记忆中年龄差异的变化反映了编码条件、记忆材料和提取条件三方面的综合作用。     

Exploring the influence of encoding format on subsequent memory

Distinctive encoding is greatly influenced by gist-based processes and has been shown to suffer when highly similar items are presented in close succession. Thus, elucidating the mechanisms underlying how presentation format affects gist processing is essential in determining the factors that influence these encoding processes. The current study utilised multivariate partial least squares (PLS) analysis to identify encoding networks directly associated with retrieval performance in a blocked and intermixed presentation condition. Subsequent memory analysis for successfully encoded items indicated no significant differences between reaction time and retrieval performance and presentation format. Despite no significant behavioural differences, behaviour PLS revealed differences in brain–behaviour correlations and mean condition activity in brain regions associated with gist-based vs. distinctive encoding. Specifically, the intermixed format encouraged more distinctive encoding, showing increased activation of regions associated with strategy use and visual processing (e.g., frontal and visual cortices, respectively). Alternatively, the blocked format exhibited increased gist-based processes, accompanied by increased activity in the right inferior frontal gyrus. Together, results suggest that the sequence that information is presented during encoding affects the degree to which distinctive encoding is engaged. These findings extend our understanding of the Fuzzy Trace Theory and the role of presentation format on encoding processes.     

The effects of gender on the retrieval of episodic and semantic components of autobiographical memory

Despite consistent evidence that women exhibit greater episodic memory specificity than men, little attention has been paid to gender differences in the production of episodic details during autobiographical recall under conditions of high and low retrieval support. Similarly the role of gender on the production of semantic details used to support autobiographical memory recollections of specific events has been largely unexplored. In the present study an undergraduate sample of 50 men and 50 women were assessed using the Autobiographical Interview (Levine, Svoboda, Hay, Winocur, & Moscovitch, 2002). Women recalled more episodic information compared to men in the high retrieval support condition, whereas no gender differences were found in the low retrieval support condition. In addition, women produced more repetitions compared to men in the high retrieval support condition. No gender differences were found in the production of semantic details. These results are interpreted in terms of gender differences in encoding and reminiscence practices. This research adds to the literature on gender differences in memory recall and suggests that gender is an important variable in explaining individual differences in AM recall.     

编码与提取干扰对内隐和外显记忆的非对称性影响

以往研究表明在外显记忆中,编码与提取加工存在着非对称性,但在内隐记忆中,二者的关系并不明确,因此实验采用“学习-再认”范式,考察在编码或提取中分别附加的干扰任务对词汇判断或再认产生的影响。结果证实编码与提取干扰对内隐或外显记忆都具有非对称性的影响,但又存在着差异,即编码干扰会导致随后外显记忆成绩显著减少,而提取干扰对其影响较小,相反,编码干扰对随后内隐测验中启动效应的影响较小,但提取干扰会破坏启动效应,从而为内隐记忆和外显记忆的分离提供了进一步的证据     

Strategic encoding and retrieval processes in verbal recall among middle-aged and older adults

The authors used an analysis of individual differences to examine the role of executive control in strategic encoding and retrieval in verbal recall. Participants enrolled in the Louisiana Healthy Aging Study completed measures of working memory (WM), cognitive status, vocabulary, and free recall of words. Indices of clustering in free recall were calculated to permit inferences on strategic encoding and retrieval processes. We hypothesized that WM would be more strongly associated with strategic encoding and retrieval metrics than vocabulary based on the assumption that successful remembering requires executive control in WM. Regression analyses, together with a variance portioning procedure, confirmed that WM had comparable levels of unique and shared variance with the strategic encoding and retrieval metrics, and both exceeded vocabulary. Theoretical and clinical implications of these data are considered, with the suggestion of future research in lifespan samples as opposed to exclusively young adult or older adult samples.     

编码如何预测提取?以相继记忆效应为证

在记忆领域, 编码与提取之间的关系始终备受关注。近37年(1980至今)的研究显示, 随后记住信息与随后遗忘信息在编码阶段关联的神经机制明显不同(该差异被称为相继记忆效应), 表明编码能够从神经机制角度预测提取。过去10年间(2008~2017), 研究者在顺承先前研究的基础上另辟蹊径, 重点从编码任务中加工水平及目标导向对相继记忆效应的影响、提取任务对相继记忆效应的影响、不同年龄群体之间的相继记忆效应异同、情绪项目和情绪背景对相继记忆效应的影响等角度展开研究。本文从上述四方面对相关研究进行了详细梳理, 并从整合研究成果、完善理论模型、挖掘潜在社会因素、探究个体差异和群体差异以及加强应用推广等方面对今后研究进行展望。     

Does retrieval intentionality really matter? Similarities and differences between involuntary memories and directly and generatively retrieved voluntary memories

Theories of autobiographical memory distinguish between involuntary and voluntary retrieval as a consequence of conscious intention (i.e., wanting to remember). Another distinction can be made between direct and generative retrieval, which reflects the effort involved (i.e., trying to remember). However, it is unclear how intention and effort interacts. For example, involuntary memories and directly retrieved memories have been used interchangeably in the literature to refer to the same phenomenon of effortless, non‐strategic retrieval. More recent theoretical advances suggest that they are separate types of retrieval, one unintentional (involuntary), another intentional and effortless (direct voluntary retrieval), and a third intentional and effortful (generative voluntary retrieval). Whether this also entails differing phenomenological characteristics, such as vividness, rehearsal, or emotional valence, has not been previously investigated. In the current study, participants reported memories in an experimental paradigm designed to elicit voluntary and involuntary memories and rated them on a number of characteristics. If intention affects the retrieval process, then we should expect differences between the characteristics of involuntary and directly retrieved memories. The results imply that retrieval intention seems to differentiate how a memory appears in a person's mind. Furthermore, we argue that these differences in part could result from differences in encoding and consolidation.     

Generation,intentionality of processing at encoding and retrieval,and age-related associative deficits

This research tested age-related differences in the retrieval of self-generated new associations under conditions that required intentional or incidental processing. Under intentional or incidental encoding conditions, young and older adults generated new associations by producing a response to a two-letter stem paired with a cue/prime word (e.g., throne–mo_____). Memory for these new associations was tested under intentional or incidental retrieval conditions by pairing the word stem with the previous cue/prime word, its homophone partner, or a prime/cue not previously presented. Results indicated equivalent priming and cueing effects for both age groups in all conditions. These results suggest that generation of new associations can eliminate age-related associative deficits, even under intentional encoding and retrieval conditions that typically disadvantage older adults.     

内隐和外显记忆任务之间的实验性分离:编码程度和提取要求的作用

通过操纵编码程度(实验1)和提取要求(实验2)比较了内隐和外显记忆任务之间的操作变化.结果表明,编码时的语义和非语义加工之间存在着相互抑制的倾向;提取要求中更多意识成份的参与使先前情节中的语义成份得到更多的提取,而很少影响非语义成份的提取,编码程度和提取要求之间存在着相互作用.