注意偏向训练对广泛性焦虑障碍负性情绪注意偏向的影响

采用改良的点探测任务,探讨了注意偏向训练能否改变GAD患者的负性情绪注意偏向并缓解其焦虑状态,及注意偏向训练的作用机制。结果发现,与控制组相比,训练组被试的负性注意偏向分数显著降低,具体表现为训练后训练组的负性注意解除能力显著高于控制组,两组被试的负性注意警觉在前后测均未有显著变化;注意偏向训练引起了GAD患者积极情绪的变化,缓解了状态焦虑。这证明了注意偏向训练对改变GAD患者负性情绪注意偏向及缓解其焦虑状态的有效性,并揭示这种改变主要是通过提升其对负性刺激的注意解除能力来实现的。     

脆弱型高自尊高中生攻击性线索注意偏向术

采用空间线索化任务、点探测任务并用眼动仪记录被试眼动指标,考察脆弱型高自尊高中生对攻击性线索注意加工特点.实验一结果显示:在无效线索提示条件下,脆弱型高自尊高中生攻击性词语反应时显著长于中性词语.实验二结果显示:脆弱型高自尊被试和安全型高自尊被试总注视时间偏向分数差异显著.研究表明,脆弱型高自尊高中生对攻击性线索存在注意解脱困难.     

注意偏向训练对改善高中生焦虑水平的作用

通过检验高中生中高焦虑被试的注意偏向特点,并对66名高焦虑被试进行注意偏向训练,结果发现:(1)高焦虑被试经过训练之后,训练组与安慰剂组在注意偏向得分上表现出显著差异,但在SCARED焦虑量表得分上并没有表现出显著差异。(2)注意偏向与SCARED量表中分离焦虑维度的关联较大,以分离焦虑为依据划分高低焦虑被试时,两组被试在注意偏向得分上差异接近显著。(3)经过训练之后,训练组在分离焦虑上有降低的趋势。研究结果表明,负性情绪注意偏向有可能是产生焦虑的原因,注意偏向训练对改善高中生焦虑水平有一定的作用。     

高、低自尊个体对负性情绪注意偏向的眼动研究

采用"点探测任务"实验范式,选取29名大学生被试,用眼动仪记录被试观察情绪图片的眼动轨迹,考察高、低自尊个体注意偏向的内部加工机制。结果表明:低自尊个体对正性情绪图片的总注视时间显著短于高自尊个体,即低自尊个体缺乏对正性情绪图片的注意偏向,对负性情绪图片不存在注意警觉和注意维持,存在注意回避;高自尊个体对负性情绪图片的总注视时间显著长于正性情绪图片,即对负性情绪图片存在注意偏向。     

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。     

低自尊个体对拒绝性信息的注意偏向

自尊是个体对自我的情感性评价, 影响着个体对周围环境的应对方式。低自尊个体由于容易知觉到外部的拒绝性信息, 也更倾向于将别人的行为知觉为拒绝, 因而存在对拒绝性信息的注意偏向。本文首先综述了低自尊个体的认知与行为特点, 其次简单介绍了低自尊个体注意偏向的常用研究范式(Stroop范式、点探测任务、空间线索任务、惊吓探测范式、注意监测任务、注意转移任务), 随后列举了解释低自尊个体注意偏向的理论(社会计量理论、关系图式理论、注意成分说、注意控制说), 最后总结了低自尊个体注意偏向的脑机制研究。未来的研究应更多关注自尊结构的复杂性, 注意偏向的信息加工阶段性及其脑机制, 注意训练的作用机制及低自尊个体注意偏向的本土研究等问题。     

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。     

不同自尊水平者的注意偏向

本研究分别从外显自尊和内隐自尊角度出发, 以大学生情绪面孔(高兴, 中性, 愤怒)图片为实验材料, 采用“空间线索任务”实验范式, 探讨不同自尊水平个体注意偏向的特点及其内在机制。结果表明, 在无效线索条件下, 低外显自尊个体对以愤怒为提示线索的靶刺激的反应时显著长于高兴和中性, 说明低外显自尊个体对负性情绪信息(愤怒)的注意偏向是一种注意的解脱困难; 高内隐自尊个体在无效线索条件下, 对以高兴和愤怒为提示线索的靶刺激的反应时显著长于中性, 说明高内隐自尊个体更易受到情绪性信息(愤怒和高兴)的吸引, 是一种选择性的注意维持倾向, 表现为注意的解脱困难。     

超重女性对食物信息加工的注意偏向和记忆偏向

采用与食物图片相关的点探测任务和学习—再认范式考察超重女性对不同热量食物信息的注意偏向和记忆偏向。结果发现：(1) 超重女性对高热量食物信息存在注意警觉—注意脱离困难模式,对低热量食物信息仅表现为注意回避模式。(2) 超重组女性对高热量食物信息的再认正确率显著高于正常体重组,而对低热量食物信息的再认成绩组间差异不显著。研究结果证实了超重女性对高热量食物信息投入更多的认知资源,存在注意偏向和记忆偏向。     

注意偏向训练：起源、效果与机制

近年来注意偏向被证明是一些心理疾病产生、维持和复发的原因。因此, 注意偏向训练成为一种前景性的治疗方法, 对低自尊、焦虑障碍、物质成瘾有良好的干预效果。它可能作用于注意的晚期加工阶段, 通过调节 “自上而下”的注意系统来改变相关症状。干预效果的条件、机制与神经机制的探索应成为今后的研究方向。     

Attention and memory biases for aggressive information in college students with fragile high self-esteem

In this study, we examined attention and memory biases for aggressive information in two groups of college students. Individuals with fragile high self-esteem (n = 30) and individuals with secure high self-esteem (n = 30) first performed a dot-probe task investigating attention bias, followed by a memory task. Incidental free recall of words presented in the memory task was then completed to assess memory bias. Results revealed that individuals with fragile high self-esteem exhibited significant attention and memory biases for aggressive words compared with secure high self-esteem individuals. Attention bias for aggressive words was positively correlated with memory bias in individuals with fragile high self-esteem, but no correlation was found for individuals with secure high self-esteem. These findings suggest that individuals with fragile high self-esteem selectively attend to and remember aggression-related information. They may process information in ways that are congruent with an aggression-related schema. This study reveals the aggressive cognitive processes of individuals with fragile high self-esteem, which may be related to aggression.     

自我客体化的女性对身体线索的注意和记忆偏向

采用点探测任务和再认任务探讨高低自我客体化女性对积极身体词和消极身体词的注意和记忆偏向,探讨自我客体化女性的糟糕任务表现的内在机制。结果发现,高自我客体化女性对积极身体词存在注意脱离困难,对积极身体词的反应时显著快于低自我客体化女性。研究结果证实了自我客体化女性存在对身体线索的注意和记忆偏向,说明自我客体化使女性对身体相关信息分配了更多的认知资源,会妨碍任务表现。     

自我客体化的女性对身体线索的注意和记忆偏向

采用点探测任务和再认任务探讨高低自我客体化女性对积极身体词和消极身体词的注意和记忆偏向,探讨自我客体化女性的糟糕任务表现的内在机制。结果发现,高自我客体化女性对积极身体词存在注意脱离困难,对积极身体词的反应时显著快于低自我客体化女性。研究结果证实了自我客体化女性存在对身体线索的注意和记忆偏向,说明自我客体化使女性对身体相关信息分配了更多的认知资源,会妨碍任务表现。     

初中生自尊的认知加工偏向效应研究

探讨了初中生自尊的认知加工偏向效应。结果发现：高自尊初中生对积极词具有显著的注意偏向效应,低自尊初中生对积极词和消极词均不存在注意偏向效应;当对比图片为高兴－生气或高兴－中性表情时,高自尊初中生对高兴表情均存在显著的注意偏向效应,当对比图片为高兴－生气时,低自尊初中生对生气表情产生明显的注意偏向效应;高自尊组与低自尊组初中生分别对与自我有关的正向、负向形容词存在显著的记忆偏向效应。     

不同自尊者对自我相关信息的记忆偏好

研究主要采用4(自尊类型)×2(词汇效价)混合设计,探讨了178名不同自尊水平或不同自尊类型大学生对自我相关信息的记忆偏好。结果发现:(1)高外显自尊者比低自尊者有更积极的记忆偏好,消极记忆偏好差异不显著;高内隐自尊者则比低自尊者有更弱的积极回忆偏好及更弱的消极回忆偏好。(2)就作为组内差异存在的记忆偏好而言,所有被试均有积极偏好;就作为组间差异存在的记忆偏好而言,脆弱的高自尊者有更强的积极偏好,但低自尊者也没有表现出明显的消极偏好。结果提示不同自尊者对自我相关信息有不同记忆偏好。     

Efficacy of Attention Bias Modification Using Threat and Appetitive Stimuli: A Meta-Analytic Review

Attention bias modification (ABM) protocols aim to modify attentional biases underlying many forms of pathology. Our objective was to conduct an effect size analysis of ABM across a wide range of samples and psychological problems. We conducted a literature search using PubMed, PsycInfo, and author searches to identify randomized studies that examined the effects of ABM on attention and subjective experiences. We identified 37 studies (41 experiments) totaling 2,135 participants who were randomized to training toward neutral, positive, threat, or appetitive stimuli or to a control condition. The effect size estimate for changes in attentional bias was large for the neutral versus threat comparisons (g = 1.06), neutral versus appetitive (g = 1.41), and neutral versus control comparisons (g = 0.80), and small for positive versus control (g = 0.24). The effects of ABM on attention bias were moderated by stimulus type (words vs. pictures) and sample characteristics (healthy vs. high symptomatology). Effect sizes of ABM on subjective experiences ranged from 0.03 to 0.60 for postchallenge outcomes, –0.31 to 0.51 for posttreatment, and were moderated by number of training sessions, stimulus type, and stimulus orientation (top/bottom vs. left/right). Fail-safe N calculations suggested that the effect size estimates were robust for the training effects on attentional biases, but not for the effect on subjective experiences. ABM studies using threat stimuli produced significant effects on attention bias across comparison conditions, whereas appetitive stimuli produced changes in attention only when comparing appetitive versus neutral conditions. ABM has a moderate and robust effect on attention bias when using threat stimuli. Further studies are needed to determine whether these effects are also robust when using appetitive stimuli and for affecting subjective experiences.     

Longevity of attentional bias modification effects for food cues in overweight and obese individuals

Accumulating evidence shows that overweight individuals exhibit an attentional bias for food and that this bias can be modified. This study investigated the longevity of such modification effects. Using a dot probe paradigm, a community sample of overweight and obese women (N = 104) was trained to direct attention towards (‘attend’) or away from (‘avoid’) food pictures. Participants completed five weekly training sessions. Attentional bias was measured before and after training, at 24 h and one-week follow-up. To increase generalisability, at each of the post-training and follow-up assessments, participants were shown a mix of old and new food pictures. They also completed another implicit bias measure, i.e. a word stem task. Attentional bias for food increased in the ‘attend’ group and decreased in the ‘avoid’ group. These retraining effects were maintained at 24 h and one-week follow-up, and extended to new food pictures. Participants in the ‘avoid’ group also produced relatively fewer food words on the word stem task than those in the ‘attend’ group. Results are consistent with predictions of cognitive-motivational models that attentional biases are malleable. They further suggest that attentional bias modification, which targets the implicit processes that underlie the heightened food responsivity in overweight individuals, could help combat pathological (over)eating.