压抑者对情绪和非情绪自传体记忆的提取诱发遗忘

该实验考察了压抑应对方式,高焦虑和低焦虑三组被试对不同情绪性自传体记忆的提取诱发遗忘的差异。结果表明,与情绪性自传体记忆比较,被试能回忆出更多非情绪性自传体记忆;正性,负性和非情绪性自传体记忆均能得到显著的提取诱发遗忘,但是提取练习对正性和非情绪性事件的回忆率的促进弱于负性事件。压抑者的提取诱发遗忘效应要小于另外两组,且对于负性自传体记忆,压抑者没有产生提取诱发遗忘。     

神经质和外倾的负情绪减弱调节特点

神经质和外倾一致被认为是有典型情绪风格的人格特质,人格生物机制研究发现,这两种特质在神经递质、脑机制及遗传等方面都具有其特定的机制。可是,关于这两种特质在情绪调节过程的生理心理机制研究还比较少。这项研究试图寻找高神经质和高外倾人群在负情绪调节过程中,包括情绪主观报告、表情行为及生理反应等方面的变化特点。研究采用生理心理实验法比较了高神经质和高外倾被试在使用认知重评、表情抑制减弱由录像片段诱发的负情绪（厌恶）时所引起情绪成分的实际变化结果。28名高神经质和28名高外倾大学生被试参加了实验。结果表明：与高外倾组比较,高神经质组在情绪激活及调节之前阶段（指导语阶段）的FPV增幅较大,在情绪被激活及调节阶段（正片阶段）的R-R间期增幅较小,整个调节过程报告较多的负情绪（如痛苦）变化。研究从生理心理层面进一步地说明,与高外倾比较,高神经质确实更容易激活其负情绪,而且,更难以对其负情绪实施减弱调节     

抑郁情绪下不同反应方式对面孔表情加工的影响

采用电影片段诱发被试的抑郁情绪,将诱发后的被试分为沉思组和分心组,分别对悲伤面孔和中性面孔刺激进行沉思或分心的反应,并用事件相关电位技术(ERP)探讨抑郁情绪下不同反应方式对个体面孔表情加工的影响。行为数据结果发现沉思组实验任务结束后的抑郁情绪值(T2)比分心组更高;实验任务结束后沉思组抑郁情绪值增高,而分心组降低;脑电数据结果发现N1波未受反应方式的影响;沉思组比分心组诱发出更大的晚期峰值的正电位(LPP)峰值;沉思组Pz点LPP峰值最高,而分心组不同电极并无显著差异。该研究结果表明抑郁情绪下不同反应方式会影响个体对于面孔表情的判断,主要体现在面孔表情的晚期加工阶段。     

诱发及个体自发认知重评对情绪唤醒反应及情绪记忆的影响

为了明确诱发（IRE）及个体习惯化的自发（SRE）认知重评策略对情绪唤醒反应及情绪记忆的影响,在测量被试SRE水平的基础上,先呈现一系列中性与负性情绪图片,要求被试对图片内容进行自然观看或认知重评,同时记录被试的主观与生理唤醒水平,之后对图片进行自由回忆及再认测试。发现IRE显著降低了情绪唤醒水平及再认正确率,但只对情绪唤醒反应较高的LR（SRE水平较低）被试有效。结果提示,IRE对情绪唤醒反应与情绪记忆的调控受到SRE的影响。     

情绪对项目记忆和来源记忆的影响

最近几十年以来, 情绪对记忆的影响越来越受到认知心理学家的关注。本文总结了我在中科院心理研究所师从傅小兰研究员攻读博士学位期间所开展的主要研究工作。我的研究以中文词语为学习材料, 分别考察了在编码过程中和编码结束后诱发情绪对项目记忆和来源记忆的影响。当情绪在编码阶段被诱发, 主要的研究发现如下：1)负性情绪增强自由回忆, 但正性情绪只呈现出增强自由回忆的趋势。2)负性情绪降低总体再认记忆, 但正性情绪对总体再认记忆没有影响。此外, 正性和负性情绪均不影响“记得”反应的正确率; 然而, 负性情绪降低了“知道”反应的正确率, 正性情绪对“知道”反应的正确率没有影响。3)正性和负性情绪均对来源记忆(即对词语字体颜色的记忆)没有影响。当情绪在编码结束后被诱发, 主要的研究发现如下：1)对女性被试而言, 负性情绪增强了项目记忆的巩固, 然而, 对男性被试而言, 正性和负性情绪均不影响项目记忆的巩固。2)无论对男性还是女性被试, 正性和负性情绪对来源记忆的巩固均没有影响。本研究的上述发现对建立情绪和记忆的关系具有理论意义, 对如何在教学情境中如何利用情绪诱发促进学生的记忆巩固也具有现实指导意义。     

正负性情绪的自主生理反应实验研究

随机抽取２４名大学生（男女各半）观看了两段内容不同的录像片段,对观看录像时的主观体验和心率（ＨＲ）、指端脉搏容积（ＦＰＶ）的变化情况做了研究。结果表明：①实验选用的两段录像分别诱发出了正性和负性情绪．②不同情绪下的自主生理反应是不同的。正性情绪下,ＨＲ变化不显著,ＦＰＶ显著下降;负性情绪下,ＨＲ显著增加,ＦＰＶ显著下降。③不同情绪下的生理反应恢复速度没有差异,但不同生理指标的恢复速度有差异,ＨＲ的恢复速度比ＦＰＶ的快．④正性情绪下,ＨＲ和ＦＰＶ之间的相关很低;负情情绪下。两种生理指标之间里显著的负相关．⑤性别只对生理指标的基础值有影响。     

负性情绪对选择性注意抑制的影响及其调节——基于女大学生黄体期的研究

采用空间提示任务,研究经期不同时段女大学生负性情绪对选择性注意抑制的影响及有效的情绪调节策略。实验1选取黄体中后期与月经期女大学生各32名,使用视频材料诱发中性和负性情绪,结果发现黄体中后期被试选择性注意抑制能力显著低于月经期;实验2选取104名黄体中后期的女大学生,负性情绪诱发后分组采用沉思、分心与人际策略进行调节,结果表明三种策略均降低了个体负性情绪,提高了选择性注意抑制成绩。研究结论如下:黄体中后期女性更受负性情绪影响,注意抑制能力下降,但有效的调节策略可改善其负性情绪并提高注意抑制能力。     

干预不同个体记忆内容对负性刺激诱发的情绪水平影响*

探讨记忆在情绪发生和调节中的作用,通过干预个体对负性刺激的记忆内容,研究了积极干预、消极干预和不干预三组被试在接受负性刺激后产生的情绪水平差异,以及不同认知方式个体对诱发情绪的不同反应。结果表明,干预类型对负性刺激诱发的消极情绪产生了一定影响:积极干预组和不干预组在消极情绪后测上的得分显著低于消极干预组,积极干预组与不干预组的得分差异不显著。认知方式、性别及干预顺序对诱发情绪的影响不显著。结论:干预记忆内容可影响负性刺激诱发的消极情绪水平,接受积极干预比消极干预产生的消极情绪水平更低,因此对记忆内容的积极干预可有效降低产生的消极情绪水平。     

负性事件引发情绪反应的性别特点及神经机制

选取45名大学本科生为被试,记录被试观看内容不同的刺激材料时主观情绪体验成绩,同时采集了心率变异性(HRV)的频域指标,探讨内容不同的负性事件引发情绪反应的性别特点及外周神经机制.结果:在主观报告上,女性所诱发的负性情绪显著高于男性.社会事件的情绪材料所引发的负性情绪显著高于家庭事件的情绪材料.在生理指标上,女性在负性事件中引起的LF/HF显著高于男性.因此,负性事件后男性和女性情绪反应在主观应激强度和生理反应模式上差异显著.     

负性情绪抑制对社会决策行为的影响

利用心理生理实验法, 通过将情绪抑制操作引入最后通牒博弈实验范式, 探讨负性情绪抑制的主观情绪体验、生理反应及其对社会决策行为的影响。以40名大学生为被试, 采用MP150型16导生理记录仪记录皮肤电反应和心率。实验为2 (组别：情绪抑制组、自然观看组) × 2 (性别：男、女) × 2 (博弈对手：人、计算机) × 4 (分配方案：￥5：￥5、￥7：￥3、￥8：￥2、￥9：￥1)的混合设计, 其中组别和性别为被试间因素, 博弈对手和分配方案为被试内因素。结果发现：(1)对负性情绪进行抑制没有减少被试相应的主观体验, 情绪抑制使皮肤电反应性增强; (2)负性情绪抑制的主观体验和生理反应不存在性别差异; (3)在面对不公平的分配方案时, 情绪抑制组被试比自然观看组更倾向于拒绝接受。结果表明在最后通牒博弈中,情绪抑制影响回应者的行为反应,使他们更倾向于做出不理智的决策。     

Memory accessibility, mood regulation, and dysphoria: difficulties in repairing sad mood with happy memories?

Recent studies have suggested that mood-incongruency effects are due to mood-regulatory processes, in which people retrieve positive memories to repair negative moods. In Study 1, the authors investigated whether dysphoria influences the accessibility of autobiographical memories following a positive or a negative mood induction combined with subsequent rumination or distraction. The results showed a mood-repair effect for nondysphoric but not for dysphoric participants following rumination. In Study 2, participants were asked to either distract themselves or to recall positive autobiographical memories after a negative mood induction. Whereas nondysphoric participants' mood improved under both conditions, dysphoric participants' mood improved only after distraction. These results suggest that dysphoria is associated with a reduced ability to use mood-incongruent recall to repair sad moods.     

The Interaction of Mood and Rumination in Depression: Effects on Mood Maintenance and Mood-Congruent Autobiographical Memory

Rumination is a response to distress in which individuals focus repetitively on their feelings and the causes and consequences of those feelings. When induced to ruminate, dysphorics exhibit more negative mood and recall more negative memories, but these effects are not seen in nondysphorics. This pattern of results could be due to trait-like differences between dysphoric and nondysphoric individuals, or to the high levels of negative affect that dysphorics are experiencing at the time of rumination. The purpose of this study was to evaluate the effects of pre-rumination mood on post-rumination mood and subsequent memory. Participants scoring high or low in depressive symptoms were assigned to either a positive or negative emotion induction prior to ruminating and completing an autobiographical memory task. Analysis of self-reported mood indicates that both emotion inductions were effective. Surprisingly, all participants returned to baseline mood levels following the rumination induction, and emotion induction had no effect on the negativity of the memories recalled. Dysphorics recalled significantly more negative memories than nondysphorics, regardless of whether positive, neutral, or negative memories were specifically prompted. Our results indicated that the prolonged experience of dysphoria may have greater effects on post-rumination mood and memory than the transitory experience of sadness.     

Rumination and overgeneral autobiographical memory

Two studies investigated the effects of rumination on the retrieval of autobiographical memories in high-depressed and low-depressed individuals. Experiment 1 administered either a rumination or distraction task prior to a cued autobiographical memory task. High-depressed participants recalled more overgeneral memories following rumination relative to distraction, whereas experimental inductions did not influence low-depressed participants. Experiment 2 administered either a positive or negative rumination task prior to a cued autobiographical memory task. Negatively valenced rumination led high-depressed participants to recall more overgeneral memories than positively valenced rumination; this effect was not observed in low-depressed participants. These findings accord with the proposal that rumination is a mediating mechanism in the retrieval of overgeneral memories, and extends this proposal by indicating that negatively valenced ruminative content is particularly instrumental in inducing overgeneral retrieval.     

The Impact of Ruminative Processing on the Experience of Self-Referent Intrusive Memories in Dysphoria

The current study sought to experimentally assess the differential effects of analytical ruminative processing and distraction on the experience of self-referent naturally occurring intrusive memories in a sample of dysphoric (BDI-II ≥ 12) participants. Seventy-seven undergraduate participants completed a memory interview to elicit details about a self-referential intrusion and were randomly assigned to either an analytical rumination or distraction condition. Subsequent to the rumination induction, participants rated their intrusive memory as more negative, more distressing, and more evocative of a negative emotional response compared to participants who were allocated to the distraction induction. Inducing analytical rumination also resulted in participants reporting worse (i.e., more sad) mood relative to those in the distraction condition. The findings align with the suggestion that depressed individuals may get caught up in a ruminative cycle that, due to the documented effects of analytical self-focus, exacerbate the emotional response elicited by intrusions and perpetuate biased attentional focus on them. Directions for future investigations of the cognitive processes that are important in the maintenance of intrusions in depressive disorders are discussed.     

Mood regulation in depression: Differential effects of distraction and recall of happy memories on sad mood

Recent research suggests that the recall of positive memories plays an important role in mood regulation. In this study, the authors examined the ability of currently depressed, formerly depressed, and never-depressed participants to regulate sad mood through the recall of positive memories or through distraction. Although improvement in mood was found for all participants in response to distraction, under instructions to recall positive memories, never-depressed participants' moods improved, whereas formerly depressed participants' sad moods remained unchanged. It is important to note that depressed participants exhibited a worsening of their sad moods after recalling positive memories. These results suggest both that depression is associated with an impaired ability to use positive recall to regulate a sad mood and that this impairment continues to be evident following recovery.     

Involuntary autobiographical memories in dysphoric mood: a laboratory study

The frequency and characteristics of involuntary autobiographical memories were compared in 25 stable dysphoric and 28 non-dysphoric participants, using a new laboratory-based task (Schlagman & Kvavilashvili, 2008). Participants detected infrequent target stimuli (vertical lines) in a simple vigilance task and recorded any involuntary autobiographical memories that came to mind, mostly in response to irrelevant words presented on the screen. Dysphoric participants reported involuntary memories as frequently and as quickly as non-dysphoric participants and their memories were not repetitive intrusive memories of negative or traumatic events. Additional content analysis showed that dysphoric participants did not recall more memories of objectively negative events (e.g., accidents, illnesses, deaths) than non-dysphoric participants. However, significant group differences emerged in terms of a mood congruency effect whereby dysphoric participants rated their memories as more negative than non-dysphoric participants. Moreover, the proportion of negatively rated involuntary memories was related to lower mood ratings at the end of the session in the dysphoric but not in the non-dysphoric group. Finally, groups did not differ on several memory characteristics such as vividness, specificity (high in both groups) and rates of rehearsal (low in both groups). Theoretical and practical implications of these findings for research on depression and autobiographical memory are discussed.     

Involuntary autobiographical memories in dysphoric mood: A laboratory study

The frequency and characteristics of involuntary autobiographical memories were compared in 25 stable dysphoric and 28 non-dysphoric participants, using a new laboratory-based task (Schlagman & Kvavilashvili, 2008). Participants detected infrequent target stimuli (vertical lines) in a simple vigilance task and recorded any involuntary autobiographical memories that came to mind, mostly in response to irrelevant words presented on the screen. Dysphoric participants reported involuntary memories as frequently and as quickly as non-dysphoric participants and their memories were not repetitive intrusive memories of negative or traumatic events. Additional content analysis showed that dysphoric participants did not recall more memories of objectively negative events (e.g., accidents, illnesses, deaths) than non-dysphoric participants. However, significant group differences emerged in terms of a mood congruency effect whereby dysphoric participants rated their memories as more negative than non-dysphoric participants. Moreover, the proportion of negatively rated involuntary memories was related to lower mood ratings at the end of the session in the dysphoric but not in the non-dysphoric group. Finally, groups did not differ on several memory characteristics such as vividness, specificity (high in both groups) and rates of rehearsal (low in both groups). Theoretical and practical implications of these findings for research on depression and autobiographical memory are discussed.     

The effects of self-focused rumination on global negative self-judgements in depression

Previous research in dysphoric participants has found that compared with distraction, rumination inductions are associated with increased levels of cognitive distortions and overgeneral autobiographical memories. Watkins and Teasdale ((2001) Journal of Abnormal Psychology, 110, 353–357) investigated which component of rumination was responsible for this effect in overgeneral memory, and found two distinct modes of ruminative self-focus, with analytical, evaluative self-focus maintaining overgeneral memory, whereas self-focus low in analytical thinking reduced overgeneral memory. The present study compared the effects of these two distinct forms of self-focused rumination with another measure of overgeneral thinking—global negative self-judgements. Thirty depressed participants and thirty never-depressed participants were randomly allocated to ‘analytic’ (high analysis) or ‘experiential’ (low analysis) self-focused manipulations. As predicted, in depressed participants, the analytical self-focus condition increased ratings of the self as worthless and incompetent pre- to post-manipulation, whereas the experiential self-focus condition resulted in no significant change in such judgements. The results are consistent with the hypothesis that an analytical mode of self-focused rumination may be particularly maladaptive in depression.