时序信息提取机制的探索

对时序信息加工的经典研究是采用新近性判断范型,结果发现其提取机制是以新近性为基础的逆向串行搜索过程。本研究采用新近性判断范型和早远性判断范型对时序信息的提取机制进行了深入的考察,结果表明：（ｌ）提取时序信息既存在逆向串行搜索,又存在顺向串行搜索;（２）早远性判断和新近性判断任务对不同部分时序信息恢复的效应不同,其中早远性判断易化早远部分,新近性判断易化新近部分──表现为对相应部分辨别力的提高和正确反应潜伏期的缩短;（３）在不同的时序信息提取任务中,被试会根据具体条件进行反转反应。     

时序信息加工机制及其通道效应的实验研究

研究由两个实验组成,实验一采用纯粹的视听方式,以线段长度和声音频率为材料,对时序信息的加工方式（自动加工与控制加工）、编码特点（时序信息是何时编码的）以及通道效应进行了研究。实验二以汉字为材料重复实验一的过程;结果表明,时序信息的加工存在视听通道效应,其机制源于记忆,且与实验材料的加工深度以及加工方式有关;时序信息既包含有自动加工,又包含有控制加工。视觉刺激倾向于自动加工,而听觉则倾向于控制加工;时序信息是在项目学习时编码获得的,而不是在提取时建构的。     

群体决策中非共享信息加工的影响因素研究进展

群体决策研究表明群体要实现优化的决策,需要在决策时提取和加工更多的信息,特别是那些为个体所拥有的非共享信息.本文从信息分布、群体特征和决策规则三方面人手考察了非共享信息提取和加工的影响因素研究,归纳了当前对于群体决策中非共享信息提取及加工的心理机制观点、并对非共享信息研究的方法和测量指标加以分析.     

时间信息视听通道效应的实验检验

研究从时点类型、自然顺序标码、延迟时间等几个角度,对时间信息时序和时距属性的通道效应进行了实验检验。结果发现,（1）长时距信息估计仍存在通道效应;（2）延迟时间估计增加了视觉时距估计的准确性;（3）时序信息通道效应不明显;（4）顺序标码有利于听觉的时间信息加工。     

人脸的类别与特定身份信息提取方式研究

人脸身份信息的提取方式一直是人脸研究中颇有争议的问题之一,以往的研究通过对名字和职业等语义信息的提取速度差异的比较,对此问题提出了两类观点,即人脸身份信息的加工是系列加工或平行加工.这两种观点一直争论不休,一些研究者提出了各种理论试图解释二者的争论.但是人脸身份信息中包括类别信息和特定信息,二者的加工可能是不同的路径,而以往的研究却混淆了这两种身份信息,使得系列还是平行的争议建立在不同的层面上.本研究通过操纵提取身份信息的不同任务以及线索类型.比较人脸和名字的作业差异,从而探讨两种类型身份信息的加工机制.本研究有助于进一步了解人脸身份信息提取的机制,丰富人脸身份信息提取的理论研究,同时对模式识别也具有重要的实践意义.     

公众时间回溯式记忆的特点

采用事后回溯设计,考察了大学生公众时间回溯式记忆的特点。研究选取1995到2001年之间发生可辨别的新闻事件14项,要求被试对新闻事件的时序、时点和时距进行回忆。结果表明：（1）公众事件回溯式时点记忆的正确率随时间的远近发生变化,较远的时间回忆正确率低,而较近的时间回忆正确率较高,存在近因效应。（2）公众事件的回溯式时距估计受真实时距的影响,短时距容易被高估,长时距容易被低估。（3）公众事件的回溯式时序回忆存在近因效应和首因效应,被试对发生较远的事件总是倾向于估计得更远,对发生较近的事件也倾向于估计得较近。而对两者中间的事件的顺序估计较为混乱。（4）本实验研究的公众事件回溯式时间记忆符合时间的重构理论和分段综合模型。     

时间记忆层次网络模型的实验检验

实验采用分类性实验材料,使被试在对词单项目加工时形成较清晰的群集,进而形成时间组块,目的在于对时间记忆层次网络进行直接检验。其中时序判断用反时间时和正确率两种反应指标,时距估计用再现和口头估计两种方法。结果发现,时间信息记忆既存在层次网络的特征,又存在线性结构的特征。     

听觉丧失对听障学生时间知觉的影响

本研究采用同时判断任务和时距二分任务,探讨了听觉丧失对听障学生视觉通道的时间知觉的影响及其机制。两个系列实验结果表明,听觉丧失损伤了听障学生视觉通道的时序知觉准确性、敏感性以及时距知觉的敏感性,支持了普遍缺陷假设;但是,听障学生视觉通道的时距知觉的准确性却未受到听觉丧失的显著影响,支持了知觉补偿假设。因此,听觉丧失对听障学生视觉通道的时间知觉的影响可能是基于选择性的机制,这主要取决于不同的时间任务以及知觉属性等因素。     

图文横排促进低熟悉词汇再认:基于8岁儿童和成人证据

图文信息广泛存在于书面材料中,但是图文材料相对呈现位置和熟悉性如何交互影响信息加工效率,及其认知机制尚不清楚。本研究基于认知负荷理论框架,采用学习-再认范式,结合学习者的认知能力（注意、工作记忆、识字量等）,考察图文材料呈现位置（横排/竖排）和熟悉性（高/低）对32名儿童（7.89 ±0.30岁）和32名成人（22.67 ±3.48岁）词汇再认的影响。结果显示：（1）总体上,低熟悉性词汇在图文横排呈现时再认正确率较高,但高熟悉性词汇不受位置影响;（2）儿童对高熟悉性词汇的再认正确率较高,但成人对低熟悉性词汇的再认正确率较高;（3）儿童识字量越大,词汇再认速度越快;成人注意力、工作记忆广度、识字量成绩越高,再认正确率越高。结果表明,无论对儿童还是成人,外在负荷（呈现位置）和内在负荷（熟悉性）之间均存在交互作用,即外在负荷显著影响高内在负荷信息的加工,但对低内在负荷信息的加工影响较弱,验证了认知负荷理论。本研究成果为不同难度水平的教材排版设计和词汇识别学习提供了科学依据。     

基于视听双通道的音乐情绪加工机制及情绪类型和音乐经验的影响

为了探讨视听双通道下的音乐情绪加工机制及音乐情绪类型和音乐训练背景对加工机制的影响,本研究采用表达开心和悲伤的音乐表演视频为材料,比较音乐组被试和非音乐组被试在单听觉通道、单视觉通道和视听双通道三种情境下的情绪评定速度、正确率和强度。结果发现：1）视听双通道与单视觉通道差异显著,与单听觉通道差异不显著。2）非音乐组被试对悲伤的评定正确率高于音乐组被试,对开心的评定正确率低于音乐组被试。说明音乐情绪加工的视听双通道整合优势仅相对单视觉通道存在;非音乐组被试对视觉通道情绪信息的变化更敏感,音乐组被试更依赖音乐经验;可在音乐表演时加入协调的视觉通道情绪信息帮助没有音乐训练经验的听赏者。     

A temporal distinctiveness theory of recency and modality effects

A temporal distinctiveness theory of contextually cued retrieval from memory is presented and applied to recency and modality effects. According to this theory, one part of the mnemonic trace of an item is a representation of the item's time of presentation. Time of presentation may be encoded with a coarse grain (so that it is consistent with a wide range of times) or with a fine grain (so that it is consistent with a narrow range of times). Retrieval proceeds by constructing temporally defined search sets that include representations of items consistent with the temporal bounds of the search set. The temporal width of the search set increases as the retention interval increases. Recency effects arise from retrieval of recently presented items from narrow search sets that include representations of few items; within the context of the search set, these items are distinctive and recalled well. Superiority in recall of recently presented auditory information in comparison with recently presented visual information is attributed to differences in the grain of time of presentation representations for aurally (fine grain) and visually (coarse grain) presented information. Four experiments confirm qualitative and quantitative predictions of the theory, including the prediction of auditory superiority at the beginning of the list when the initial items are temporally distinct.     

Memory Without Consolidation: Temporal Distinctiveness Explains Retroactive Interference

Is consolidation needed to account for retroactive interference in free recall? Interfering mental activity during the retention interval of a memory task impairs performance, in particular if the interference occurs in temporal proximity to the encoding of the to‐be‐remembered (TBR) information. There are at least two rival theoretical accounts of this temporal gradient of retroactive interference. The cognitive neuroscience literature has suggested neural consolidation is a pivotal factor determining item recall. According to this account, interfering activity interrupts consolidation processes that would otherwise stabilize the memory representations of TBR items post‐encoding. Temporal distinctiveness theory, by contrast, proposes that the retrievability of items depends on their isolation in psychological time. According to this theory, information processed after the encoding of TBR material will reduce the temporal distinctiveness of the TBR information. To test between these accounts, implementations of consolidation were added to the SIMPLE model of memory and learning. We report data from two experiments utilizing a two‐list free recall paradigm. Modeling results imply that SIMPLE was able to model the data and did not benefit from the addition of consolidation. It is concluded that the temporal gradient of retroactive interference cannot be taken as evidence for memory consolidation.     

Schedules of presentation and temporal distinctiveness in human memory

Recency, in remembering a series of events, reflects the simple fact that memory is vivid for what has just happened but deteriorates over time. Theories based on distinctiveness, an alternative to the multistore model, assert that the last few events in a series are well remembered because their times of occurrence are more highly distinctive than those of earlier items. Three experiments examined the role of temporal and ordinal factors in auditorily and visually presented lists that were temporally organized by distractor materials interpolated between memory items. With uniform distractor periods, the results were consistent with Glenberg's (1987) temporal distinctiveness theory. When the procedure was altered so that distractor periods became progressively shorter from the beginning to the end of the list, the results were consistent for only the visual modality; the auditory modality produced a different and unpredicted (by the theory) pattern of results, thus falsifying the claim that the auditory modality derives more benefit from temporal information than the visual modality. We distinguish serial order information from specifically temporal information, arguing that the former may be enhanced by auditory presentation but that the two modalities are more nearly equal with respect to the latter.     

Prioritization within visual working memory reflects a flexible focus of attention

When motivated, people can keep nonrecent items in a list active during the presentation of new items, facilitating fast and accurate recall of the earlier items. It has been proposed that this occurs by flexibly orienting attention to a single prioritized list item, thus increasing the amount of attention-based maintenance directed toward this item at the expense of other items. This is manipulated experimentally by associating a single distinct feature with a higher reward value, such as a single red item in a list of black items. These findings may be more parsimoniously explained under a distinctiveness of encoding framework rather than a flexible attention allocation framework. The retrieval advantage for the prioritized list position may be because the incongruent feature stands out in the list perceptually and causes it to become better encoded. Across three visual working memory experiments, we contrast a flexible attention theory against a distinctiveness of encoding theory by manipulating the reward value associated with the incongruent feature. Findings from all three experiments show strong support in favor of the flexible attention theory and no support for the distinctiveness of encoding theory. We also evaluate and find no evidence that strategy use, motivation, or tiredness/fatigue associated with reward value can adequately explain flexible prioritization of attention. Flexible attentional prioritization effects may be best understood under the context of an online attentional refreshing mechanism.

     

Buildup of proactive inhibition as a function of temporal spacing and adult age

Glenberg's theory of temporal distinctiveness (Glenberg, 1987; Glenberg & Swanson, 1986) was used to examine whether the buildup of proactive inhibition (PI) may be interpreted as an overloading of temporal retrieval cues. The Brown-Peterson task was selected on the basis of the assumption that successful performance on such a task requires the use of a recency rule where the subject must use temporal cues to retrieve the contents of the most recent study list. Two variables were manipulated that were presumed to affect the utilization of temporal cues: length of intertrial interval (ITI) (0 or 90 s) and adult age (young or elderly). Glenberg's theory suggests that temporal spacing improves memory by enhancing the distinctiveness of temporal retrieval cues. Thus, it was predicted that PI buildup should be less in the 90-s condition than in the 0-s condition. Assuming that older adults are more sensitive to the overloading of temporal cues, it was anticipated that older adults would experience a greater buildup of PI than younger adults at the 0-s condition. Results showed that although PI buildup varied with length of ITI, it did not vary with adult age. Analysis of delayed measures of recall, recognition, and temporal memory suggested that a retrieval interpretation based on Glenberg's theory is insufficient as an explanation of the current results; encoding difficulties also appear to contribute to the buildup of PI.     

Distinctiveness revisited: Unpredictable temporal isolation does not benefit short-term serial recall of heard or seen events

The notion of a link between time and memory is intuitively appealing and forms the core assumption of temporal distinctiveness models. Distinctiveness models predict that items that are temporally isolated from their neighbors at presentation should be recalled better than items that are temporally crowded. By contrast, event-based theories consider time to be incidental to the processes that govern memory, and such theories would not imply a temporal isolation advantage unless participants engaged in a consolidation process (e.g., rehearsal or selective encoding) that exploited the temporal structure of the list. In this report, we examine two studies that assessed the effect of temporal distinctiveness on memory, using auditory (Experiment 1) and auditory and visual (Experiment 2) presentation with unpredictably varying interitem intervals. The results show that with unpredictable intervals temporal isolation does not benefit memory, regardless of presentation modality.     

Temporal isolation does not facilitate forward serial recall—or does it?

In numerous recent studies in short-term memory, it has been established that forward serial recall is unaffected by the temporal isolation of to-be-remembered items. These findings contradict the temporal distinctiveness view of memory, which expects items that are temporally isolated from their neighbors to be more distinct and hence remembered better. To date, isolation effects have only been found with tests that do not constrain output order, such as free recall. This article reports two experiments that, for the first time, report a temporal isolation effect with forward serial recall, using a running memory task in which the end of the list is unpredictable. The results suggest that people are able to encode and use temporal information in situations in which positional information is of little value. We conclude that the overall pattern of findings concerning temporal isolation supports models of short-term memory that postulate multidimensional representations of items.     

Retrieval conditions and false recognition: testing the distinctiveness heuristic

High levels of false recognition are observed after people study lists of semantic associates that all converge on a nonpresented lure word. In previous experiments, we have found that orienting participants to encode distinctive information about study list items by presenting them as pictures as opposed to words produces marked reductions in false recognition. We have suggested that these reductions reflect the operation of a distinctiveness heuristic: Participants demand access to detailed pictorial information in order to support a positive recognition decision. The present experiments provide additional evidence on this point and allow us to distinguish between the distinctiveness heuristic account and an alternative account based on the impoverished encoding of relational information that occurs when one is studying pictures. In Experiment 1, even when only half of the items in a study list were presented as pictures, a general suppression of false recognition was observed that could be attributable to impoverished encoding of relational information. Experiment 2 provided a critical test of the distinctiveness heuristic account: We manipulated test instructions and found that differences in false recognition rates between picture and word encoding were attenuated in a retrieval condition that did not encourage reliance on a distinctiveness heuristic.     

Evidence for similar principles in episodic and semantic memory: The presidential serial position function

When people recall a list of items that they have just experienced (an episodic memory task), the resulting serial position function looks strikingly similar to that observed when people are asked to recall the presidents of the United States (a semantic memory task). Despite the similarity in appearance, there is disagreement about whether the two functions arise from the same processes. A local distinctiveness model of memory, SIMPLE, successfully fit the presidential data using two underlying dimensions: one corresponding to item (or presidential) distinctiveness and the other to order (or positional) distinctiveness. According to the model, presidential primacy and recency are due to the same mechanisms that give rise to primacy and recency effects in both shortand long-term episodic memory. All of these primacy and recency effects reflect the relative distinctiveness principle (Surprenant & Neath, 2009): Items will be well remembered to the extent that they are more distinct than competing items at the time of retrieval.