超常与常态儿童记忆和记忆组织的比较研究

本实验以超常儿童(20名,平均年龄为11岁2个月)和常态儿童(20名,平均年龄为11岁3个月)为被试,以数字和图形为实验材料对超常儿童和常态儿童的记忆和记忆组织特点和差异作了初步的比较研究。结果是;(1)超常儿童不仅在回忆量上比常态儿童优异,更主要的是在记忆速度和记忆组织上比常态儿童发展得更好;(2)儿童的记忆与记忆组织有密切相关,尤其是记忆速度与记忆组织之间有显著相关;(3)实验表明同时使用回忆量和记忆速度作为记忆成绩的指标更为合适,能更好地说明儿童记忆的特点。     

7岁超常和常态儿童的信息加工速度

该研究以超常和常态儿童各25名(平均年龄分别为6岁10个月和6岁11个月)为被试,以选择反应、图形匹配、心理旋转、和抽象匹配为基本认知任务,对超常和常态儿童的信息加工速度作了比较研究。研究者对被试的正确率和反应时作了分析。结果表明：(1)超常儿童基本信息加工能力显著优于普通儿童,具体表现在反应时更短,或正确率更高。(2)超常儿童与常态儿童信息、加工的差异与任务难度有关,在选择反应和图形匹配任务中,超常儿童的反应时显著短于常态儿童。而且,在图形匹配任务中,任务难度越大,差异越显著。而在心里旋转和抽象匹配任务中,超常儿童的正确率显著高于常态儿童。(3)任务的难度无论对超常组被试还是常态组被试的反应时及反应正确率都有影响,但影响方式不太一样。在反应时上,随着任务难度的增加,两组被试的反应时都明显延长;但在正确率上,则随着任务难度的增加,常态组被试的正确率降低,而超常组被试的正确率基本稳定在一个较高的水平上,即任务难度问的差异不显著。     

3—6岁超常与常态儿童感知观察力的比较研究

本实验是全国超常儿童研究协作组为鉴别超常儿童认知能力设计的一套实验之一。目的是探讨3—6岁常态儿童感知观察力在数量和质量两方面的水平与特点,为鉴别超常儿童的感知观察力取得参照指标。 实验是根据观察过程的特点进行设计的。实验的结果,经检验效度与信度较高,因此本实验对3—6岁儿童感知观察力的测量是有鉴别力的。 通过实验发现在3—6岁常态儿童之间观察能力的发展是不平衡的,3岁与4岁之间发展得快,在数量与质量两方面都比其它年龄阶段之间发展得幅度大。 通过超常儿童与常态儿童的比较研究,发现4岁超常儿童与常态儿童之间,在质量方面的差异比数量方面的差异更为显著。这一结果,对今后超常儿童研究工作的重点具有参考的价值。     

弱智儿童的记忆能力及其培养

本实验用A·P·鲁利亚提出的回忆实验方法,对可11名正常儿童和21名弱智儿童的记忆能力作了比较。结果表明:(1)弱智儿童虽然大脑受损,记忆能力低于正常儿童,但仍然有一定的记忆能力;(2)在记忆后第1—2天内和第6天之前,应着重让弱智儿童进行复习;(3)对弱智儿童,宜多采用直观教学法;(4)给弱智儿童用的教材内容应有更多的他们所熟悉的内容;(5)弱智儿童与正常儿童相比,记忆能力的差异既表现在数量上,也表现在质量上;(6)教师在教学工作中,要对弱智儿童进行记忆的培养。     

超常与普通儿童元记忆知识发展的实验研究

本研究主要探讨超常儿童与普通儿童早期元记忆知识的发展。运用对偶图片对被试的个体变量、项目变量、过程变量、策略变量、遗忘与回忆变量知识分别进行了考察。结果表明,5—7岁儿童是元记忆知识快速发展的时期,每一年龄组儿童的元记忆知识总体水平都显著地高于低一年龄组的儿童;超常儿童的元记忆知识水平均与高一年龄组的普通儿童基本相同,与超常儿童发展的单一优势模式相吻合。     

元记忆监控研究的新进展

元记忆监控是元记忆的重要方面,反映了人对自己记忆状态的意识和对自己记忆程度的判断和估计。本文从三个方面概括总结了该领域内研究的新进展：(1)元记忆监控的有关概念及其交互作用假设;(2)元记忆监控交互作用的理论模型;(3)元记忆监控的发展性研究。     

3—14岁儿童记忆发展的某些特点

儿童少年在记忆发展方面有些什么特点?我们在研究智力超常儿童记忆特点的同时,对3—14岁常态儿童的记忆发展情况作了探索。主要了解他们在记忆广度、识记速度、记忆的精确性、保持的持久性等方面的发展情况。为此,我们设计了四个测试项目:①数跟读,主要是测试被试的记忆广度;②按形填数(3—6岁儿童用“按图填色”),主要是测试被试的识记速度;③图片再认,主要是测试被试的记忆精确性。以上三项基本上属于短时记忆。     

儿童视听觉通道现实监控的发展

采用视觉图片和动画,听觉声音和词语任务,分别要求5岁（平均年龄66.5个月）、7岁（平均年龄80.8个月）和9岁（平均年龄117.2个月）共233名儿童在知觉和想象材料中作出来源判断,比较现实监控任务中视听觉通道之间和通道内部的发展差异。结果发现,在通道内部,不同实验材料对现实监控的影响不尽相同。在视觉通道内部：较小年龄儿童对图片的现实监控好于动画,较大年龄儿童对动画的现实监控好于图片;在听觉通道内部：儿童对声音的现实监控好于词。随着年龄的增长,对记忆现实监控的通道差异从视觉的图片刺激优势到图片和动画优势,到视觉刺激和声音对词的优势。文章还讨论了这些发展差异的可能原因,对我们理解个体记忆发展的规律和特点以及对实践的指导意义     

智障儿童和正常儿童外显记忆与内隐记忆的比较研究

本实验采取加工分离程序(PDP)对38名弱智儿童的外显记忆与内隐记忆进行研究,并与47名正常儿童进行比较,结果认为:(1)正常儿童外显记忆明显优于弱智儿童,但在内隐记忆方面,正常儿童与弱智儿童没有显著差异;(2)本实验中,年龄对内隐记忆和外显记忆均没有影响。研究结果对弱智儿童的教育方面有启示作用;另外,PDP实验由于其本身的复杂性,在对特殊人群进行施测时,需要特别注意。     

儿童记忆发展的若干特点的研究

本实验是对5—1l岁儿童记忆发展中若干特点如:记忆的策略、复述的出现、意义的组合、元记忆(Metamemory)等方面所作的研究。实验的结果指出:(一)随年龄的增长,儿童记策略水平不断提;记忆的容量也在增加;特别是在入小学后有了明显的变化。(二)训练可以促进儿童记忆策略水平的提高;但有一定的年龄范围;(三)记忆能力的发展受文化教育的影响,知识的丰富与记忆策略的掌握有着密切的关系。     

年龄、焦虑与情节记忆之内容与来源的关系

将情节记忆区分为内容记忆和来源记忆,筛选年老和年轻的高、低特质焦虑者完成记忆任务,以探讨情节记忆年老化的选择性和变异性及其与焦虑之间的联系。两项实验结果表明来源记忆是否随增龄而有选择性受损受来源性质影响,与来源呈现方式和来源识记意识性无关。焦虑干扰了老年组的记忆操作,是老年人情节记忆存在个体差异的原因之一;但焦虑对青年组没有不利影响,提示焦虑调节两类记忆的年龄差异。     

CONVERSATIONAL MEMORY

While there has recently been a notable increase in attempts by memory researchers to focus on more naturalistic stimuli little attention has been paid to conversations. Conversations represent stimuli that are distinctly different in a number of ways from most other stimuli that people are required to remember. Conversations are jointly created, constantly updated, and necessarily are readily accessible by participants. The present study, exploring people's memory for natural conversations in which they participate, finds that even after only five minutes people are able to recollect only about 10% of what was said in a social exchange. Further, the mode of recall (written versus oral) and the presence and type of memory goals affected what and how much of the interaction was recalled. Subjects also remembered more of their partner's comments in the interaction than their own. Finally, oral communication anxiety affected both the production of discourse in the conversations and recall of the interactions, while writing apprehension impacted subjects' written recalls of their conversations.     

RIGHT-HEMISPHERE MEMORY SUPERIORITY:

Abstract— Six experiments explored hemispheric memory differences in a patient who had undergone complete corpus callosum resection. The right hemisphere was better able than the left to reject new events similar to originally presented materials of several types, including abstract visual forms, faces, and categorized lists of words. Although the left hemisphere is capable of mental manipulation, imagination, semantic priming, and complex language production, these functions are apparently linked to memory confusions—confusions less apparent in the more literal right hemisphere. Differences between the left and right hemispheres in memory for new schematically consistent or categorically related events may provide a source of information allowing people to distinguish between what they actually witnessed and what they only inferred.     

HIGH-FIDELITY PERCEPTUAL LONG-TERM MEMORY

Abstract— Visual long-term memory for spatial information was assessed by measuring discrimination thresholds for the spatial frequency of sinusoidal gratings in a delayed discrimination task, with various time intervals separating test and reference stimuli The results demonstrate perfect preservation of information across J-s to 50-hr retention tervals in the sense that the spatial frequency discrimination thresholds retained at the level defined by the spatial solution of the sensory analysis This high-fidelity spatial long-term memory may represent an elementary memory mechanism for precategorical storage of visual features     

记忆监控的准确性与有效记忆

以大学生为被试,采用2（记忆方式：自我调控、程序预设）×2（测试间隔：5分钟、3天）的混合设计,考察记忆监控的准确性对有效记忆的影响。结果发现：（1）在即时测试中,“自我调控”组的回忆成绩与“程序预设”组之间的差异未达显著水平,但在延时测试中,后者的成绩显著高于前者;（2）“自我调控”条件下被试的学习判断相对准确,未出现高估;（3）“自我调控”未导致记忆的有效保持,可能是由于被试低估了程序预设那些可暂时提取的词对的作用。     

视觉工作记忆中的子系统

由于在预实验中发现记忆复合物体(multi—feature objects)时存在子系统优势,在本实验中,研究了记忆单特征物体(single—feature objects)时,是否存在子系统优势。被试为中国科学技术大学学生17人。要求被试记忆同样数目的单特征物体,条件1下物体属性相同,条件2下物体分属两种属性。通过正确率分析,条件2的成绩好于条件1。这个结果表明：单特征物体记忆时存在子系统优势。     

SEARCHING FOR MOOD DEPENDENT MEMORY

Though it has sometimes been shown that events encoded in a certain state of affect or mood are most retrievable in that state, neither the circumstances under which mood dependent memory (MDM) occurs nor the mechanisms that enable its emergence are as yet well understood. The purpose of the research reviewed here is to clarify these circumstances and mechanisms. To this end, the research focuses on four factors that appear to play pivotal roles in the occurrence of MDM. These factors are (a) the nature of the target events or the manner in which they are encoded (ie, are events generated through internal mental processes such as reasoning, imagination, or thought more apt to be forgotten following a shift in sources?), (b) the nature of the retrieval task (is it possible to demonstrate mood dependence using implicit rather than explicit measures of memory?), (c) efficacy of mood modification (do strong, stable, and authentic affective states promote the appearance of MDM?), and (d) whether alterations in affect are one-dimensional or two-dimensional (does a shift along both the pleasure and the arousal dimensions of mood impair memory more than does a shift along the pleasure dimension alone?) Exploring these four factors in detail may make it possible to resolve much of the controversy that now surrounds MDM, and to acquire fresh insights into its cognitive and affective foundations.