动作记忆SPT优势效应的理论探讨

操作条件下的记忆效果好于语词条件下记忆效果的现象被称为动作记忆SPT效应。以往研究先后提出非策略加工、多通道加工、动作编码及情景整合理论来解释SPT效应,但这些理论解释仍存在矛盾和分歧,并阻碍了当前动作记忆领域的研究进展。为了解决目前的理论困境,本文详细地阐述了各理论的核心内容、发展历程及其存在矛盾和分歧的原因,并提出应以加工过程与加工对象相结合的视角来建立新的理论模型,以进一步促进实证研究的展开。     

动作操作与怪异性对联结记忆的影响

被试操作任务（SPT）编码后的记忆成绩通常优于语词任务（VT）编码后的记忆成绩,此类现象被称为SPT效应。本研究考察动作与物体之间已有的联结程度对联结再认的SPT效应的影响。学习阶段,被试使用SPT与VT编码识记日常动作短语（动作与物体配对,如“切西瓜”）和怪异动作短语（如“种锤子”）;测试阶段,要求被试区分“旧”、“重组合”和“新”短语。结果发现,当识记日常动作短语时,SPT条件的联结再认成绩显著高于VT条件的成绩,但是,当识记怪异动作短语时,SPT条件与VT条件的联结再认成绩无显著差异。此外,仅在VT而非SPT条件,怪异动作短语的联结再认成绩显著高于日常动作短语的成绩。研究结果表明,动作操作和刺激材料的怪异性均可促进动作与物体的联结记忆,但是两者不能对联结记忆产生叠加的促进作用。     

SPT效应的编码机制：项目特异性与项目关联性信息

SPT是增强了项目特异性信息还是增强了项目关联性信息一直是SPT效应研究的主题。研究从项目特异性信息和项目关联性信息两个层面综述了SPT效应编码机制的相关研究。在项目特异性信息方面,研究剖析了SPT增强项目特异性信息加工的具体内容、所采取的研究方式以及SPT增强项目特异性加工的原因。在项目关联信息方面,研究分类梳理了情景关联、项目与环境的关联以及类别关联在SPT效应中的作用。未来研究应着手探索SPT能够增强项目特异性加工的深层原因。     

熟悉性对被试操作效应的作用:来自无线索回忆再认的证据

在动作事件的再认记忆中,被试操作后的记忆成绩优于单纯的词语记忆(SPT效应)。人们认为操作促进了回想加工,而熟悉性是否对SPT效应起作用仍然存在分歧。研究采用无线索回忆再认范式,考察了信息提取失败时熟悉性对SPT效应的作用。结果显示:(1)SPT和VT两种编码都引发了稳定的无线索回忆再认效应(RWCR效应)。(2)与VT编码相比,SPT编码引发更强的熟悉性加工,表现出无线索回忆再认的记忆优势。上述结果表明,即使无法正确提取细节信息,在SPT编码中被试凭借熟悉性辨认的能力仍然高于VT编码。该结果从信息提取失败的视角为熟悉性对SPT效应的作用提供了更为直接的证据。     

不同加工水平对内隐记忆和外显记忆中生存加工的影响

记忆的生存加工优势主要指生存情景下的记忆成绩好于其他情景下记忆成绩的一种优势效应。实验1采用生存加工研究范式,结合内隐记忆和外显记忆测试方法,考察了生存加工在内隐记忆和外显记忆中的表现。实验2结合不同的词语评估时间,进一步考察了不同加工水平对内隐记忆和外显记忆中生存加工的影响。结果发现,在内隐记忆中没有表现出生存加工优势,但是在外显记忆中出现了生存加工优势效应,并且外显记忆中的生存加工优势会受到加工水平的影响。     

动作知识的组织与提取及对认知的影响

在认知活动中,动作经验重新激活影响认知加工。本文综述了动作知识的组织和提取机制、动作经验影响认知活动的理论、动作知识对物体和词汇识别、空间知觉、记忆、注意的影响。未来研究可以从不同类型的动作知识对认知的影响、不同语言中动作词汇的认知机制等方面进行探索。     

被试操作任务（SPT）范式与动作记忆研究

百余年来,记忆研究所使用的材料一直以语言材料为主。然而,言语记忆是否记忆的全貌?使用浯言材料进行的研究结果是否能够推而广之．应用到其他形式的记忆材料上去?在实验室中如何对言语记忆以外的记忆进行深入研究呢?正是为了回答这些问题．Cohen(1981)所设计的被试操作任务(subject performed task,SPT)实验范式引起了大量相关研究。     

任务转换中惯性激活对内隐记忆的影响：来自ERPs的证据

以往研究认为内隐记忆具有不受干扰影响的自动化加工特征,其证据主要来自于对内隐记忆编码过程的研究。最近已有多项研究发现,内隐记忆受提取过程中的干扰影响,但对这一现象的产生机制目前仍尚无定论。本研究根据任务转换相关理论,通过将go/no-go范式引入干扰任务,探讨提取过程中前置干扰对内隐记忆产生影响的内在机制。结果表明,前置的干扰任务产生惯性激活时,后续的内隐记忆任务会受到影响,即启动效应降低。对惯性激活进行抑制后,随后的内隐记忆则不受影响。并且,在内隐记忆相关的N400成分上得到了与行为数据一致的结果,即在no-go干扰下,获得的N400新旧效应,在go干扰下却未被发现。研究结果证明,提取干扰对内隐记忆的影响主要由干扰任务与内隐记忆任务对认知资源的竞争导致。     

任务和个体特征对事件性前瞻记忆后效的影响及其机制

前瞻记忆后效(aftereffects of prospective memory)是指个体错误地重复执行已完成的前瞻记忆意向或已完成的意向对进行中任务产生干扰的现象。基于前瞻记忆多重加工理论,通过对文献梳理发现,任务特征(前瞻记忆任务特征、进行中任务特征、任务情境)和个体特征会调节事件性前瞻记忆后效。目前,关于事件性前瞻记忆后效的加工机制的理论解释主要包括自动化加工、控制加工、提取-抑制加工、停止标记加工、双加工和动态多重加工等。其中,自动化加工可分为反射-联结加工和差异-搜索加工,而控制加工又可分为监控加工和抑制加工。事件性前瞻记忆后效的形成与自动化加工和监控加工关系更密切,而后效的消退更依赖抑制加工。未来研究需深入考察事件性前瞻记忆后效的加工机制,增加对不同类型以及自然情境中前瞻记忆后效的考察,注重探究降低前瞻记忆后效的策略。     

吸烟:促进还是损害前瞻记忆?

以往研究对吸烟或尼古丁摄入影响前瞻记忆的特点和机制进行了探讨,发现吸烟或尼古丁摄入对前瞻记忆的影响具有双重机制:尼古丁能短暂刺激神经递质释放,并通过促进策略加工提高即时的前瞻记忆表现;但长期来看,吸烟会损伤心脑血管和神经元,降低认知和执行功能的水平,从而持久损害前瞻记忆。将来的研究应在区分前瞻记忆任务类型、尼古丁摄入方式等的基础上,进一步明确吸烟或尼古丁摄入影响前瞻记忆的机制。     

Memory for action events: findings in neurological patients

Encoding action phrases by enacting leads normally to better memory performance than verbal encoding. In order to gain additional insight into the representational basis of the enactment effect, neurological patients are contrasted with healthy participants. Persons suffering from Parkinson's disease, which primarily impairs the motor system, and patients suffering from Frontal Lobe Syndrome, which primarily affects action-related planning processes, were involved. We investigated whether the enactment effect would be differentially affected by these disorders. In addition, the characteristics of information processing after encoding by enacting was analyzed by varying memory material (unrelated versus clusterable actions) and by adding an encoding condition that included obligatory action planning (director condition). The findings indicate that the impact of motor information for the enactment effect is not dominant compared to the role of action-related cognitive and motivational processes, in particular planning processes. The findings of the two experiments are explained within traditional conceptual memory theories.     

Memory of action events: the role of objects in memory of self- and other-performed tasks.

Encoding action phrases by enactment produces better recall than hearing or reading the action phrase. This study examined whether enactment enhances memory relative to observing another perform the same action. Theories of the enactment effect suggest that the complexity of the action, here manipulated by varying the number of objects involved in an action, may determine whether enactment enhances memory relative to observation. The results revealed a consistent subject-performed task advantage across all object conditions; the size of the effect did not vary with increasing task complexity. Additionally, items that included the use of an object were recalled better than those without objects. The results are consistent with the views of Engelkamp and Zimmer (1997) and Backman, Nilsson, & Kormi-Nouri (1993), who argued that the SPT effect is due to motor and/or sensory encoding.     

Memory for actions: Self-performed tasks and the reenactment effect

Encoding action phrases by enactment (self-performed tasks, or SPTs) leads to better memory than does observing actions (experimenter-performed tasks, or EPTs) or hearing action phrases (Engelkamp, 1998). In addition, recognition memory for SPTs is enhanced when test items are reenacted. Experiment 1 demonstrated a reenactment effect for EPTs, as well as for SPTs, indicating that the effect can be based on visual, as well as motoric, feedback. However, the reenactment effect in SPTs was found even when the participants were blindfolded at test (Experiment 2), indicating that the basis for the reenactment effect differs across SPTs and EPTs. Experiments 3 and 4 provided additional evidence that visual feedback is not critical for reenactment recognition in the case of SPTs. In addition, these experiments failed to show a hand congruency effect (enhanced recognition when the same hand enacts at study and at test), indicating that this effect is not as generalizable as the reenactment effect. These results have important implications for the motor-encoding hypothesis of the enactment effect.     

Memory for actions: Enactment and source memory

Enacting simple action phrases enhances item memory but may not enhance other aspects of memory. The present experiment examines the effects of enactment on source memory. During the study phase, participants performed some actions (subject-performed tasks, SPTs) and observed the experimenter perform other actions (experimenter-performed tasks, EPTs). One group performed the SPTs with eyes closed, one group with eyes open (the standard condition), and one group performed SPTs facing a mirror (EPT presentation was constant across groups). As expected, item memory was better for SPTs than for EPTs. More importantly, source memory for SPTs was affected by the amount of visual feedback. As predicted by the source-monitoring framework, source memory for SPTs decreased as the amount of visual feedback increased from none (eyes closed) to moderate (standard condition) to maximal (mirror condition). In addition, SPT encoding failed to increase source memory and in one condition actually decreased source memory, relative to EPT encoding. Thus, enactment dissociated item and source memory, enhancing the former but not the latter.     

The Role of Relational Processing in Memory for Actions: A Negative Enactment Effect in Free Recall

The enactment effect occurs if people remember items that they enacted or enacted symbolically during study better than items that they were simply asked to remember. Enactment is generally believed to lead to thorough processing of individual items. There has been some controversy as to whether the superior processing of information concerning the relations between action phrases (i.e. whole-list relational information) may additionally contribute to the enactment effect. The extant empirical data on this issue seem contradictory. In the account brough forward here, it is hypothesized that whole-list relational information is processed better during enactment than during verbal learning only if it taps the same aspect of a concept as the verb-object relational information within each action phrase. It is processed worse if these two types of information tap different aspects of a concept. This explanation represents an extension of the three-factor account of positive and negative generation effects to the field of memory for actions. To provide evidence for this account, positive and, notably, negative enactment effects in object recall and in organization scores are demonstrated in three experiments with a total of 246 participants.     

中年Ⅱ型糖尿病人记忆损伤特点

本研究主要探讨中年Ⅱ型糖尿病人的记忆损伤特征。研究选取病人和对照各30人,控制年龄(65岁以下。病人组平均53岁,正常组52岁)、教育水平和相关疾病等因素。测试数字符号、数字工作记忆广度、动作记忆和无意义图形再认4项认知任务。结果发现：(1)病人组数字符号测试显著低于正常组;(2)在支持性条件记忆自由回忆中,病人组在有动作演练的高语义关联和无动作演练的低语义关联项目上显著低于对照组。出现分离现象;(3)在线索回忆中,病人组与对照组差异不显著;(4)两组数字工作记忆广度、无意义图形再认的成绩无差异。根据SPT(subject—performed task)研究理论对结果进行了分析,得出结论：中年Ⅱ型糖尿病人记忆的一般性信息加工能力未表现出受损,但特异信息加工受到损伤,并可能预测随年龄及病程进行而表现出一般性信息加工能力受损。     

工作记忆中的词长效应

工作记忆中的词长效应是指在即时序列回忆中短单词列的成绩优于长单词列的现象。该文首先回顾与词长效应有关的实验研究及阐述对应的理论解释,包括经典的语音回路理论和新近提出的特征模型、整合理论、项目位置权衡理论和SIMPLE理论等,然后介绍在这一方面运用脑成像技术研究的进展,如ERP,PET和fMRI方面的研究,为词长效应理论解释提供了进一步的证据,接着讨论词长效应研究中存在的争议,最后简评各主要理论并展望了今后研究的趋势     

Memory of imagined actions: Imagining oneself or another person

Summary In two experiments, three modes of action encoding were compared: overt enactment, self-imagination, and imagination of another person performing the actions. Overt enactment and imagining self-performance of an action are mainly assumed to involve motor-kinesthetic representations, whereas imagining another person is thought to place more demands on the visual representational system. Previous paired-associate learning data on memory of action verbs showed that motor-kinesthetic imagery hinders pair integration, but that pair integration is facilitated by visual imagery. The comparison of free and cued recall of actions learned from lists of concrete nouns supports the assumption that the representational properties of overt enactment and self-imagination differ from those involved in the imagining of another person.     

前瞻记忆的理论模型综述

前瞻记忆是相对于回溯记忆提出的一种特殊的长时记忆,是指记住在将来某个恰当的时间执行先前意向的行为。本文介绍了近年来研究者提出的前瞻记忆认知和提取机制的理论模型,并对其做了评述。最后,本文针对目前研究中的薄弱环节尝试性地提出了今后前瞻记忆研究进一步发展的方向。