汉语口语词汇产生中的多重音韵激活：单词翻译任务的ERP研究

口语词汇产生过程中, 非目标词是否会产生音韵激活是独立两阶段模型和交互激活模型的争论焦点之一。研究运用事件相关电位技术, 考察了被试在翻译命名任务中是否受到背景图片音韵或语义干扰词的影响。行为反应时中未发现显著的音韵效应, 而语义效应显著, 表明非目标词不会产生音韵激活。事件相关电位的结果显示在目标单词呈现后的400~600 ms时间窗口中出现了显著的语义效应, 在600~700 ms时间窗口内出现了边缘显著的语义效应和音韵效应, 均表现为相关条件比无关条件波幅更正。上述结果表明在将英语翻译成汉语的过程中, 尽管在脑电上呈现出可能存在微弱的多重音韵激活, 但行为结果并不会显示出非目标项的音韵激活。研究结果支持了汉语口语词汇产生遵循独立两阶段模式的观点。     

唤醒度对汉语情绪词情绪启动效应的影响

使用词汇情绪启动的实验范式,通过两个行为实验探讨了不同SOA(100ms、300ms和500ms)条件下情绪唤醒度在情绪启动效应中的作用,以及情绪启动效应是否受到任务形式的影响。结果发现,在情绪效价判断任务中,SOA为100ms时高唤醒和低唤醒启动词都出现了情绪启动效应,SOA为300ms时只有高唤醒启动词出现了情绪启动效应。在真假词判断任务中,无论高唤醒还是低唤醒启动词都没有出现情绪启动效应。唤醒度是影响词汇情绪启动效应的重要因素,但这种效应不是完全自动化的过程,会受到SOA和任务导向的影响。情绪启动效应可能来自于启动词与目标词在反应趋向上的一致性趋势。     

词汇熟悉度对非熟练中英双语者语言理解转换中非目标语言激活的影响

采用改造后的长时重复启动范式,探讨母语为汉语的非熟练中英双语者语言理解转换中非目标语言的激活层面,以及词汇熟悉度的影响。实验1考察学习阶段不同熟悉度的非目标词在测验阶段呈现时能否出现长时重复启动效应,从而检测双语者语言理解转换中非目标语言是否自动激活,实验2探究学习阶段不同熟悉度的非目标词在测验阶段以翻译对等词呈现时能否出现长时重复启动效应,从而检测双语者语言理解转换中非目标语言的语义层面能否激活。结果发现:非熟练中英双语者语言理解转换中非目标语言不管为中文还是英文,都能自动激活,但激活层面会受到词汇熟悉度的影响;当非目标语言为二语时,熟悉度高的二语词能激活到语义层面,熟悉度低的二语词只能激活到词汇层面;当非目标语言为一语时,不管词汇熟悉度高还是低,都能够激活到语义层面。     

刻板印象的激活效应:行为和ERPs证据

以刻板印象表征中的核心内容——刻板特质词作为研究材料,采用分类-确认范式对刻板印象激活效应的时间进程及其认知机制进行了探讨。以性别范畴词"男"/"女"作为启动刺激,以性别刻板特质词作为靶子,特质词与范畴词构成一致和冲突两种情境,记录了34名被试(男女各半)对特质词与范畴词进行一致性判断时的行为反应和ERPs。结果发现:(1)刻板印象冲突情境下,因刻板印象激活效应的作用,被试的反应时要比刻板印象一致情境下更长;不同性别的被试均表现出性别内群体范畴词激活优势效应,即内群体范畴词启动条件下反应时更短。(2)刻板印象激活效应对早期ERP成分(P1、N170、N100、P2)没有影响,在刻板印象冲突情境下诱发了额-中区更显著的N400,该成分标志着刻板印象的激活效应;不同性别的被试均在内群体范畴词启动下诱发了波幅更大的P600。(3)刻板印象的激活效应以及内群体范畴词激活优势效应均发生在知觉后阶段。     

无意识成就目标激活与追求:来自ERP的证据

为探索无意识目标激活的神经机制,采用单因素被试内设计,自变量为目标激活阶段无意识成就目标激活(有、无),因变量为阈下呈现的成就目标相关词(成就目标无关词)出现后所诱发的ERP成分,以及目标追求阶段被试判断两位数加减法算术式的正确率和平均反应时。结果发现:(1)无意识成就目标能够通过阈下启动得以激活;(2)阈下呈现的成就目标相关词诱发了一个明显的N200成分,可能反映了大脑执行控制功能在个体无意识成就目标激活与追求中的重要作用。     

词素语义在三、五年级儿童汉语词汇识别中的作用

采用启动范式,利用词素语义透明度效应,在汉语词汇识别过程中探讨了三、五年级儿童对词素语义的加工。实验采用3×2×2混合因素设计,变量分别为年级（三年级vs.五年级vs.成人）、启动词类型(词形相关vs.词形无关)和目标词类型(透明词vs.不透明词)。结果发现启动词类型和目标词类型交互作用显著,当词形相关时,被试对透明词判断的正确率更高;当词形无关时,被试对不透明词判断的正确率更高,反应时更快。此外,未发现启动词类型、目标词类型和年级两者或三者的交互作用。结果说明三、五年级儿童在汉语词汇阅读过程中,词素语义可以被激活并影响到当前词汇的加工,词形相似性会对这种词素语义透明度效应产生影响。此外,词素语义透明度效应在三、五年级以及成人间保持稳定。     

不同提示线索对于Stroop干扰效应的影响

本研究采用线索提示任务探讨了不同提示线索颜色、SOA及提示有效应对于经典Stroop干扰效应的影响。结果发现,线索提示类型及其颜色是否与目标色词一致会对Stroop任务产生显著影响。其中有效提示下出现显著Stroop效应,而无效提示下Stroop效应消失,显示视觉注意空间搜索会影响Stroop效应;线索提示颜色与色词颜色是否一致同样影响Stroop干扰效应,两者不一致时存在显著Stroop效应,而两者一致时Stroop效应消失,表明Stroop效应的发生依赖于色词加工中不同通道间信息的转译。 关键词：Stroop 效应;线索提示任务;转译理论     

学习次数和材料难度对学习判断绝对准确性的影响

本研究采用5（学习次数）×2（材料难度）被试内设计,考察材料难度和学习次数对即刻和延迟学习判断绝对准确性的影响。45名大学生被试参加实验,共收集有效数据37个。结果表明：（1） 即刻条件下,高、低难度词对都出现了练习伴随低估效应;（2） 延迟条件下,高、低难度词对均未出现练习伴随低估效应。对低难度词对的学习判断准确预测了回忆成绩,高难度词对则出现了练习伴随高估效应;（3） 随着学习次数的增加,不同难度词对在即刻条件下的练习伴随低估效应趋于消失,延迟条件下高难度词对的练习伴随高估效应趋于消失。     

词汇识别中歧义词素语义加工:ERP研究

结合掩蔽启动范式和ERP技术,利用歧义词素的加工,本研究探讨了歧义词素语义的激活。实验采用3×2两因素被试内设计,歧义词素两含义互为启动刺激和目标刺激,两变量分别为启动词类型(歧义词素含义1 vs.含义2 vs.无关词)和目标词类型(歧义词素含义1 vs.含义2)。行为结果发现启动词类型和目标词类型存在交互作用,即只有当共享词素同形同义的情况下,目标词的加工才可能被启动,共享词素同形不同义时并没有产生启动效应。ERP结果进一步肯定了行为结果,在N250和N400两个脑电成分上都发现了启动类型和目标类型交互作用有关的效应,当启动词和目标词共享词素同形同义时,同时引发了N250和N400的变化;当共享词素同形不同义时,时程分析时虽然也发现了N250的变化,但是N250的效应较小,小于同形同义所引发的N250效应,持续时间也较短。实验结果说明,在词汇识别中歧义词素语义可以激活,并对目标词汇加工的早期加工阶段发挥作用。     

汉语复合词语素意义与整词语义整合加工的时间进程

研究表明语素意义会自动激活并影响整词语义加工。但是,汉语复合词识别中语素意义何时被激活以及如何参与并影响复合词语义整合的时间进程还缺乏清晰的认识。研究采用事件相关电位(ERP)技术,构建了三类双字词材料:语素意义与词义相关的透明复合词(如炽热)、语素意义与词义不相关的不透明复合词(如风流)、以及作为控制条件的单语素词汇(如伶俐),对比考察双字词的首词素和尾词素语义参与复合词语义加工的时间进程。结果发现,首字加工的早期(300～400ms)和晚期(460～700ms)都表现出语素效应,即两类复合词要比单语素词诱发更负的波幅。在尾字加工的早期阶段(260～420 ms)不仅发现了语素效应,还发现了语义透明度效应,即不透明复合词比透明复合词诱发了更负的波幅。而在尾字加工的晚期(480～700 ms),出现了反转的语素效应,即两类复合词比单语素词诱发更正的波幅。结果表明了语素作为独立表征单元,在早期加工阶段就得到了自动激活;语义透明度在复合词早期加工过程发挥了重要作用,透明复合词语素整合加工能够顺利获取整词语义,而不透明复合词语素整合加工则会阻碍整词语义获取。     

Suppression of emotional and neutral material

Previous studies have indicated that suppression of a thought results in an immediate increase of the frequency of this thought and/or in a rebound effect, i.e. in a heightened frequency of this thought later on. The present study (n = 53) examined the relationship between suppression and emotionality of the to-be-suppressed material. More specifically, it was investigated whether suppression of an emotional story results in stronger immediate enhancement or thought rebounds than suppression of a neutral story. There was a clear initial enhancement effect in the group suppressing a neutral story: subjects who tried to suppress experienced more target thoughts than subjects who did not try to suppress. In the neutral-story conditions, no rebound effect occurred. In the groups exposed to an emotional story, there was neither evidence of initial enhancement nor of a rebound. As most obsessions are related to emotional themes, the present findings cast doubt on the claim that the rebound phenomenon represents a valid laboratory model for clinical obsessions.     

On bad mood and white bears: The effects of mood state on ability to suppress unwanted thoughts

Does temporary mood influence people's ability to engage in effective thought suppression? Based on past research on mental control and recent work on affective influences on social cognition, this experiment predicted and found that negative mood improved and positive mood impaired people's ability to suppress their thoughts when instructed not to think of a neutral concept, white bears. We also found clear evidence for ironic rebound effects: on a subsequent generative task, intrusions of the suppressed thought were greater in the negative than in the positive mood group. Participants received positive or negative feedback about performance on a supposed creativity task to induce positive or negative moods, and then engaged in two consecutive generative writing tasks, the first accompanied by instructions to suppress thoughts of white bears. Those in a negative group reported fewer “white bear” intrusions when attempting to suppress, but more “white bear” intrusions (an ironic rebound effect) in the subsequent task when the suppression instruction was lifted. The implications of these results for everyday tasks of mental control, and for recent affect–cognition theories are discussed.     

Suppression of obsession-like thoughts in nonclinical individuals: impact on thought frequency, appraisal and mood state

Wegner's (1994, Psychological Review, 101, 34-52) research on the paradoxical effect of thought suppression has been incorporated into contemporary cognitive-behavioural models of obsessive-compulsive disorder. However, findings on the effects of thought suppression on thought frequency have been inconsistent and few studies have actually examined the suppression of thoughts that are obsessional in nature. In the present study 219 nonclinical participants were randomly assigned to suppress or not suppress a neutral, obsessional or positive thought during an initial monitoring interval. In a second thought monitoring interval, all participants received instructions not to suppress their target thought. No paradoxical effect of suppression on frequency was observed for any type of thought, although suppression of obsessional thoughts was associated with greater subsequent discomfort and a more negative mood state than suppression of positive or neutral target thoughts.     

事与愿违？思维抑制中的立即增强效应和延迟反弹效应

思维抑制作为一种重要的自我调节策略,对维护个体的心理健康具有重要意义。但在思维抑制的过程中,会出现立即增强效应或延迟反弹效应。本文在介绍思维抑制研究范式发展脉络的基础上,分别从信息加工和动机视角对思维抑制的加工机制及其影响因素进行了梳理,并据此指出未来研究应改进研究范式,考察环境变量对思维抑制的影响,整合理论解释以及开发改善精神障碍患者思维抑制的训练方法。     

情绪状态对大学生条件推理的影响

采用不同情绪效价的电影片断诱发大学生不同的情绪,并运用眼动仪器记录条件推理的过程和结果,探讨了不同情绪状态对条件推理的影响状况。实验采用3（情绪组别：积极情绪、消极情绪、中性情绪）×4（推理形式：MP、DA、AC、MT）的混合实验设计。研究结果发现,中性情绪状态下的条件推理成绩显著地高于积极和消极情绪状态,结果支持抑制假说。     

Ageing and thought suppression performance: Its relationship with working memory capacity,habitual thought suppression and mindfulness

A study investigated how the ability to suppress thoughts in the laboratory was affected by type of thought suppressed (positive, negative, neutral), participants’ age and working memory capacity (WMC). Linked variables (Use of thought suppression, social desirability, and mindfulness) were measured to assess whether they modified susceptibility to thought intrusion.Younger, middle aged and older adults suppressed three different valenced thoughts in a counterbalanced order for 5-min per thought. Participants then completed a WMC task and questionnaire measures of the linked variables.Valence had no effect on intrusions. WMC was positively related to intrusions; higher WMC corresponded to greater intrusions. Age was negatively related to intrusions; with increasing age intrusions decreased. Hierarchical regression showed only age and backward digit span (WMC) significantly predicted intrusions. The relationship between WMC and intrusions was not moderated by age. WMC and age both independently predict level of intrusion, and no synergistic effect was found.     

Cross‐cultural differences in emotion suppression in everyday interactions

Previous research suggests that in collectivistic cultures, people tend to suppress their emotions more than in individualistic cultures. Little research, however, has explored cross‐cultural differences in emotion regulation in everyday interactions. Using a daily social interaction method, we examined whether people from collectivistic backgrounds (Chinese exchange students and immigrants from the Moluccas, Indonesia) living in the Netherlands differed from those from individualistic backgrounds (Dutch natives) in emotion suppression during everyday interactions. We also examined whether this depended on their relationship with the interaction partner(s). We found that Chinese participants suppressed positive and negative emotions more than Dutch and Moluccan participants and that this was related to differences in interdependent and independent self‐construal across the samples. We also found that Chinese participants suppressed positive emotions less in interactions with close others, whereas Dutch participants suppressed negative emotions more with non‐close others. No such differences were found for Moluccans. Our findings support the idea that people from collectivistic cultures suppress emotions more than those from individualistic cultures, but they also suggest that this depends on who the interaction partner is. Furthermore, they suggest that emotion suppression may change when people with collectivistic backgrounds have been raised in individualistic cultures.     

Suppressing thoughts of past events: Are repressive copers good suppressors?

We investigated the ability of individuals with a “repressive coping style” to strategically control thoughts of events from their past, which made them feel either proud or embarrassed, within the thought suppression paradigm. We examined whether (low) anxiety and (high) defensiveness interacts to influence suppression success over and above anxiety and defensiveness alone using low anxious, repressor, high anxious, and defensive high anxious groups. For the emotionally positive “proud event”, all groups avoided event‐related thoughts when instructed to suppress. For the emotionally negative “embarrassed event”, repressors reported fewer event‐related thoughts than all other groups, even when not instructed to suppress. Repressors also reported the lowest level of suppression effort and showed no “rebound”. We discuss repressors' memory performance in terms of their natural tendency to avoid negative self‐referent material, and thought and memory control in everyday life.     

Thought suppression in obsessive-compulsive disorder

Social cognition research has indicated that attempts to suppress thoughts can lead to a paradoxical increase in the frequency of that thought. This phenomenon has been a central component of cognitive-behavioural models of obsessive-compulsive disorder (OCD); however, research has yet to demonstrate deficient thought suppression ability in OCD patients. We examined whether individuals with OCD (OCs) exhibit a deficit in the ability to suppress thoughts. In Experiment 1, attempted thought suppression led to a paradoxical increase in self-reported thoughts for OCs, but not for nonanxious controls (NACs) or anxious controls (ACs). In order to rule out self-report biases, in Experiment 2 we utilized a lexical decision paradigm that measured priming strength of a target word under thought suppression conditions. Results paralleled those of Experiment 1: OCs showed decreased lexical decision latency of the 'suppressed' thought (thought to reflect either increased priming strength or disrupted processing of nonsuppressed thoughts), thus exhibiting a paradoxical effect of thought suppression. This effect was not seen in NACs or ACs. These findings suggest that deficits in cognitive inhibitory processes may underlie the intrusive, repetitive nature of clinical obsessions.     

Effects of emotion and age on performance during a think/no-think memory task

Recent studies have demonstrated that young adults can voluntarily suppress information from memory when directed to. After learning novel word pairings to criterion, participants are shown individual words and instructed either to "think" about the associated word, or to put it out of mind entirely ("no-think"). When given a surprise cued recall test, participants typically show impaired recall for no-think words relative to think or "control" (un-manipulated) words. The present study investigated whether this controlled suppression effect persists in an aged population, and examined how the emotionality of the to-be-suppressed word affects suppression ability. Data from four experiments using the think/no-think task demonstrate that older and younger adults can suppress information when directed to (Experiment 1), and the age groups do not differ significantly in this ability. Experiments 2 through 4 demonstrate that both age groups can suppress words that are emotional (positive or negative valence) or neutral. The suppression effect also persists even if participants are tested using independent probe words that are semantically related to the target words but were not the studied cue words (Experiments 3 and 4). These data suggest that the cognitive functioning necessary to suppress information from memory is present in older adulthood, and that both emotional and neutral information can be successfully suppressed from memory.