职业生涯高原教师的职业事件编码和再认特点

该研究运用Tversky的社会认知实验范式,对职业生涯高原教师和非职业生涯高原教师在职业生活事件的编码和再认阶段的加工特点进行比较研究。结果发现:(1)职业生涯高原教师比非职业生涯高原教师具有更多的负性编码,存在负性编码偏向;(2)职业生涯高原教师比非职业生涯高原教师具有更多的负性再认,存在负性再认偏向;(3)职业生涯高原教师在编码和再认阶段具有负性的社会认知加工特点。     

抑郁症状中学生自我相关生活事件的回忆、再认和启动效应特点

采用Tversky的实验设计,对非抑郁和抑郁症状中学生的回忆、再认和启动效应进行了探讨。实验发现,抑郁症状中学生对自我相关生活事件信息加工存在负性回忆、负性再认、负性启动和负性加工偏向;抑郁症状中学生对自我相关生活事件信息加工的回忆具有情境一致性;对再认材料的不同加工深度影响抑郁症状中学生自我相关生活事件信息加工的再认;抑郁症状中学生对自我相关生活事件信息加工的负性启动主要是由于对负性条目、中性条目的负性偏向加工引起     

网络成瘾者的编码和再认实验研究

探讨网络成瘾者在编码和再认阶段是否具有负性的社会认知加工特点.采用Tversky的社会认知实验范式对网络成瘾者与非网络成瘾者进行比较研究.结果表明:(1)与非网络成瘾者相比,网络成瘾者具有更多的负性编码,存在负性编码偏向;(2)与非网络成瘾者相比,网络成瘾者具有更多的负性再认,存在负性再认偏向;(3)网络成瘾者在编码和再认阶段具有负性的社会认知加工特点.     

抑郁中学生自我相关生活事件的编码特点研究

采用Tversky1的实验范式,探讨抑郁和非抑郁的中学生对自我相关生活事件(正性、负性、中性)的编码加工特点。研究发现:1)非抑郁组把负性和中性句子条目编码为正性多(p<0.01),而抑郁组把正性条目和中性条目编码为负性多(p<0.01);2)在编码偏向上,抑郁组采用负偏向编码,非抑郁组采用正偏向编码(p<0.01)。提示抑郁症状中学生对正性和中性的社会信息较多的负偏向编码。     

自尊与记忆偏向的关系

采用2（外显自尊：高、低）×2（内隐自尊：高、低）×2（编码深度：浅、深）×3（词汇效价：积极、中性、消极）混合设计,考察了89名不同自尊类型的大学生在不同编码深度下对不同效价形容词的再认记忆。结果发现：（1）在浅水平编码组中,低内隐自尊被试比高内隐自尊被试有更强的积极记忆偏向,而高低不同水平的外显自尊者对于词语记忆偏向没有显著差异;（2）在深程度编码组中不同自尊水平影响被试对积极词的无意识提取;（3）所有被试均有积极记忆偏向。     

负性情绪强度对双加工再认提取的影响

双加工理论认为再认提取存在回想和熟悉性两种认知加工过程。本研究采用修正的“记得/知道”范式,考察不同强度的负性情绪对这两种再认提取过程的影响。结果发现：（1）在记得反应上不同负性情绪强度的材料呈现出以下模式：高度负性 > 中度负性 > 轻度负性 > 中性;（2）在知道反应上,不同负性情绪强度的材料呈现出以下模式：中性 > 轻度负性 > 中度负性 > 高度负性。这些结果表明,不同强度的负性材料对情绪记忆的影响表现为两条途径：依赖于回想的再认随着负性情绪强度的增加而逐步提高,另外一个依赖于熟悉性的再认随着负性情绪强度的增加而逐步降低。     

知觉负载对负性分心面孔的知觉加工和记忆的影响

本研究采用视觉搜索和意外再认记忆任务,结合事件相关电位技术,考察知觉负载对负性分心面孔的知觉加工和记忆的影响。在视觉搜索任务中,行为上恐惧分心面孔在高负载下干扰任务。ERP结果上,恐惧比中性分心面孔诱发更大的N170和N250;在低负载下恐惧比中性分心面孔诱发更大的N700,在高负载下没有差异。在意外再认记忆中,个体对低负载下的恐惧分心面孔表现出记忆。这些结果说明负性分心物在早期是自动化加工;晚期加工受知觉负载的调节,负载越低对负性分心物的过滤越少,存在对负性分心物的记忆偏向。     

情绪启动对低自尊个体注意偏向的影响

研究通过两个实验来探讨情绪启动对低自尊个体注意偏向的影响。实验一采用点探测实验范式考察高、低自尊个体的注意偏向特点。实验二将重复启动范式和点探测实验范式相结合,进一步探讨情绪启动如何影响低自尊水平个体注意偏向。结果表明：低自尊个体对负性信息存在注意偏向;情绪启动对低自尊个体注意偏向有显著的影响。正性情绪启动对低自尊个体负性注意偏向有显著的调节作用,负性情绪启动加重了低自尊个体的负性注意偏向。     

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。     

自尊对情绪面孔注意偏向的影响

研究表明低自尊个体对负性信息表现出高度的警觉和关注,而高自尊个体相对来说注意积极地方面,但并未表现明显偏向。为了精确记录注意选择神经加工时间进程,进一步从电生理学角度对低自尊个体的负性注意偏向进行探讨,本研究运用事件相关电位（ERP）技术对不同自尊个体在点-探测任务过程中的注意偏向进行研究。实验一以129名在校大学生作为被试,以大学生面孔情绪图片（高兴、悲伤和中性）作为实验材料,结果发现,高低自尊个体之间没有出现注意偏向的差异。实验二以实验一筛选出的30名高低自尊个体作为被试,选择了更具负性情绪唤醒的愤怒图片作为实验材料（高兴、愤怒和中性）,行为数据结果发现,两组被试都没有出现注意偏向,相反,无论是在高兴面孔条件下还是在愤怒面孔条件下,低自尊个体的反应时都快于高自尊个体;电生理学数据结果发现,在低自尊个体中,在两种情绪面孔条件下,有效线索的P1峰值显著高于无效线索,而无效线索的N2pc峰值显著高于有效线索。电生理学数据表明,无论是负性的还是正性的情绪性的信息都能引起低自尊个体的更多注意,表明低自尊个体更容易受到情绪性信息的影响。     

Emotional valence influences the neural correlates associated with remembering and knowing

In the present study, we examined whether emotional valence modulates the neural processes that are engaged during the encoding of information that is later vividly remembered versus that which is only known to be familiar. Participants underwent an fMRI scan while viewing positive, negative, and neutral stimuli. Later, recognized items were labeled as either remembered or known. Negative items that were later vividly remembered recruited temporo-occipital regions associated with sensory processing more than did positive or neutral items that were vividly remembered. The encoding of positive information later known recruited the cingulate gyrus and bilateral frontal and parietal areas—regions associated with episodic and semantic retrieval and self-referential processing—more than did the encoding of negative or neutral items that were later known. These results suggest that memories for negative items may be vividly recollected due to increased sensory processing during encoding, whereas enhanced gist-based processing of positive information may lead to increased feelings of familiarity.     

记忆编码中目标与背景的情绪一致性对记忆提取的影响

摘 要 本研究将经典情绪启动范式和学习-再认范式相结合,探讨学习时启动与目标的情绪一致性对目标再认的影响。在记忆编码阶段,以情绪面孔图片为启动刺激、一般情绪图片为目标刺激,要求被试对目标图片的效价进行判断;在提取阶段向被试呈现一般情绪图片,要求被试判断是否在前一阶段见过。结果表明,编码阶段的加工背景对记忆提取产生了显著影响。一致启动促进了认知加工与记忆编码,提高了再认正确率。ERP结果也表明,在目标刺激呈现后300-500ms,编码时的情绪一致性对再认阶段消极目标诱发的ERP产生了显著影响。     

Motivated message processing: How motivational activation influences resource allocation, encoding, and storage of TV messages

This paper investigates differences in overtime processing of television messages with three types of emotional trajectories—those which begin neutral and become negative, begin neutral and become positive and begin neutral and become equally positive and negative. The limited capacity model of motivated mediated message processing is used to predict how the type of emotional content influences real-time activation of the appetitive and aversive motivational systems which then alter concurrent and subsequent message processing. Results show that during the first time period, when motivational activation is low, more resources are allocated to coactive and positive compared to negative messages supporting the positivity offset hypothesis. In the middle time period, when activation is moderate, more resources are allocated to negative than to positive messages, supporting the negativity bias hypothesis. Further, the different patterns of motivational activation do result in different patterns of messages processing. During positive messages, encoding increases and storage decreases over time. During negative messages, encoding decreases and storage increases overtime. During coactive messages initial encoding and storage are high though both decrease slightly over time.     

Loneliness is associated with a greater self-reference effect in episodic memory when compared against a close friend

Loneliness describes a negative experience associated with perceived social disconnection. Despite the clear links between loneliness and mental and physical health, relatively little is known about how loneliness affects cognition. In this study, we tested the effect of loneliness on cognitive distance between the self and others, using a task in which participants completed a surprise memory task for adjectives implicitly encoded in relation to the self, a close friend or a celebrity. We assessed item memory sensitivity, metacognitive sensitivity, metacognitive efficiency and source memory for positive and negative words. In addition, participants reported their trait loneliness and depression. Results revealed an overall self-referential advantage compared with both friend and celebrity encoded items. Likewise, a friend-referential advantage was identified compared to celebrity-encoded items. Individuals who experienced more loneliness showed a greater self-referential bias in comparison to words encoded in relation to a close friend, and a smaller friend-referential bias in comparison to words encoded in relation to celebrity. These findings suggest that loneliness is reflected in a greater cognitive distance between the self and close friends in relation to memory biases. The results have important implications for understanding the social contextual effects on memory and the cognitive ramifications of loneliness.     

高社交焦虑个体对正性面孔的解释偏差

本研究采用情绪启动范式考察社交焦虑个体对正性刺激解释偏差。研究以正性和打碎的面孔为启动项,正性或负性非社交词为目标项,要求高社交焦虑组被试和控制组被试判断目标项的情感色彩,并记录其反应时与准确率。结果发现,两组被试具有不同的情绪启动模式：高焦虑组被试未表现出显著地相容性效应;他们在正性-正性条件下的反应时显著慢于控制组被试。研究结果提示高社交焦虑个体具有对正性社交刺激的解释偏差,他们不能充分理解正性社交刺激的积极含义。     

Implicit and explicit memory bias for threat in post-traumatic stress disorder.

We investigated explicit (cued recall) and implicit (word completion) memory in Vietnam combat veterans with (n = 24) and without (n = 24) post-traumatic stress disorder (PTSD). Half of the subjects in each group encoded combat, social threat, positive, and neutral words elaboratively, whereas the others encoded these words nonelaboratively. On the cued recall test, under both encoding conditions, both groups recalled more combat words than other words. However, difference scores obtained by subtracting the mean recall for neutral words from the mean recall scores for the other words revealed that PTSD patients exhibited a relative explicit memory bias for combat words. That is, PTSD patients tended to exhibit poor memory for everything but combat words. On the word completion test, only PTSD subjects exhibited an implicit memory bias for combat words. This bias was greater for primed than for unprimed words, thereby ruling out a response bias. Such memory bias may underlie the 'reexperiencing' symptoms characteristic of PTSD (e.g. intrusive thoughts, nightmares).     

对公共媒体信息的加工偏向：内外群体属性的调节作用

本研究采用两个实验在公共媒体信息背景下考察人们对不同效价新闻的加工偏向,以及新闻群体属性在加工偏向中的调节作用。实验1、2均以不同效价的内外群体的真实新闻为实验材料,实验1采用选择接触范式,从行为选择层面间接考察被试阅览不同新闻时的注意选择偏向;实验2采用点探测范式,增加两种SOA（200ms / 500ms）条件,进一步直接地揭示被试加工新闻信息时的注意偏向特点选择行为偏向背后的注意偏向特点。结果表明,实验1中被试倾向加工积极的内群体新闻以及消极的外群体新闻;同样,在实验2的注意后期,也发现人们对内群体新闻的积极注意偏向,与对外群体新闻的消极注意偏向,而在注意早期,人们对积极新闻存在注意偏向,且不受群体属性影响。结果符合社会认知加工的内群体偏好与外群体贬低偏向。     

Mood-congruent free recall bias in anxious individuals is not a consequence of response bias

The status of mood-congruent free recall bias in anxious individuals was evaluated following incidental encoding of target words. Individuals with high and low levels of trait anxiety completed a modified Stroop task, which revealed an attentional bias for threat-related stimuli in anxious individuals. This group was significantly slower in naming the colour in which threat-related words were displayed compared to neutral words. In a subsequent free recall test for the words used in the modified Stroop task, anxious individuals recalled more threat-related words compared to low-anxious people. This difference was significant even when controlling for the false recall of items that had not been presented during study. These results support the view put forward by Russo, Fox, Bellinger, and Nguyen-Van-Tam (2001) that mood-congruent free recall bias in anxious individuals can be observed if the target material is encoded at a relatively shallow level. Moreover, contrary to Dowens and Calvo (2003), the current results show that the memory advantage for threat-related information in anxious individuals is not a consequence of response bias.     

Interpretation biases in social anxiety: response generation, response selection, and self-appraisals

Cognitive theories propose that the resolution of ambiguity is related to the maintenance of social anxiety. A sentence completion task was used to examine how individuals high (n=26) and low (n=23) in social anxiety resolve ambiguous social sentences. Individuals were asked to generate as many responses as came to mind for each sentence, and then to endorse the response that best completes the sentence. Total responses, first responses, and endorsed responses were examined separately. Results indicated that high anxious individuals had more negative and anxious responses and fewer positive and neutral responses than low anxious individuals on all sentence completion measures. In contrast, a self-report measure of interpretation bias indicated that more of negative and anxious appraisals were related to social anxiety, while positive and neutral appraisals were not. Results are discussed in terms of a multi-stage processing model of interpretation biases.