知觉冲突信息对他人印象控制策略的影响:以直接信息与间接信息为例

个体根据知觉选择、反应偏向以及实时更新的情境信息调节自身状态,以适应性地促进对当前知觉信息的灵活编码,这一过程即为印象形成的认知控制。采用词语判断任务操控直接信息与间接信息,通过侧抑制任务的变式对知觉对象进行高、低负载两种水平的加工,考察了不同类型的冲突信息及其知觉负载对他人印象控制策略的影响。结果发现:知觉负载对印象控制策略的调节作用会依据知觉信息的类型(冲突vs.相容)而变化。具体而言,当知觉信息相容时,个体的印象控制策略仅受知觉负载的调节而产生效应,即高知觉负载的个体易采取主动性控制策略而进行自上而下的线索驱动性加工,低知觉负载的个体则易采取反应性控制策略而进行自下而上的探测驱动性加工; 当知觉信息冲突时,个体的知觉负载效应消失,即对冲突信息的印象控制策略受到知觉信息的类型(冲突vs.相容)与知觉负载双重调节:高知觉负载的个体易采取反应性控制策略而激活反刻板印象,从而在印象加工中出现冲突适应偏向; 低知觉负载的个体则易采取主动性控制策略而激活刻板印象,从而在印象加工中出现冲突抑制偏向。这些结果表明,仅当他人信息不存在冲突时,知觉负载对印象控制策略的调节才发挥单一效应。     

Load theory of selective attention and cognitive control

A load theory of attention in which distractor rejection depends on the level and type of load involved in current processing was tested. A series of experiments demonstrates that whereas high perceptual load reduces distractor interference, working memory load or dual-task coordination load increases distractor interference. These findings suggest 2 selective attention mechanisms: a perceptual selection mechanism serving to reduce distractor perception in situations of high perceptual load that exhaust perceptual capacity in processing relevant stimuli and a cognitive control mechanism that reduces interference from perceived distractors as long as cognitive control functions are available to maintain current priorities (low cognitive load). This theory resolves the long-standing early versus late selection debate and clarifies the role of cognitive control in selective attention.     

Selective Attention and Perceptual Load in Autism Spectrum Disorder

ABSTRACT— It has been suggested that the locus of selective attention (early vs. late in processing) is dependent on the perceptual load of the task. When perceptual load is low, irrelevant distractors are processed (late selection), whereas when perceptual load is high, distractor interference disappears (early selection). Attentional abnormalities have long been reported within autism spectrum disorder (ASD), and this study is the first to examine the effect of perceptual load on selective attention in this population. Fourteen adults with ASD and 23 adults without ASD performed a selective attention task with varying perceptual loads. Compared with the non-ASD group, the ASD group required higher levels of perceptual load to successfully ignore irrelevant distractors; moreover, the ASD group did not show any general reduction in performance speed or accuracy. These results suggest enhanced perceptual capacity in the ASD group and are consistent with previous observations regarding superior visual search abilities among individuals with ASD.     

High working memory load leads to more Ebbinghaus illusion

The evidence that distractor processing increases with greater load on working memory has come mainly from Stroop-type interference tasks, making it difficult to establish whether cognitive load affects distractor processing at the perceptual level or during response selection. We measured the Ebbinghaus illusion under varying levels of working memory load to test whether cognitive control is also relevant for preventing processing of distractors that do not produce any response conflict, and instead affect target processing at the perceptual level. The Ebbinghaus illusion was greater under high working memory load, suggesting that availability of cognitive control functions is critical to reduce distractor processing even for distractors that are not associated with a response. We conclude that the effect of loading working memory during selective attention leads to greater distractor perception.     

The Elephant in the Road: Auditory Perceptual Load Affects Driver Perception and Awareness

Summary Perceptual load theory research has shown that the level of perceptual load in a task affects processing of additional information. Less certain are the cross‐modal effects of perceptual load—does load in one modality affect processing in another? The current study assessed the effect of auditory perceptual load on visual attention in a driving simulator task. While driving, participants listened to traffic updates on the radio, which imposed either low or high perceptual load. Awareness for an unexpected animal as well as less novel objects (such as billboards and other vehicles) was markedly reduced under high load. Driver behaviour was also significantly affected, with impaired lateral control, longer reaction times to hazards and more collisions under high load. This study has important implications for load theory and also more general implications for road safety, as it suggests that auditory load may be an important, often overlooked factor in driver attention.Copyright © 2017 John Wiley & Sons, Ltd.     

Differences in familiarity according to the cognitive reserve of healthy elderly people / Diferencias en familiaridad en función de la reserva cognitiva en ancianos sanos

Abstract

This study examines the relationship between cognitive reserve and familiarity processes in recognition memory. We hypothesize that people with high cognitive reserve are able to better compensate in alternative information retrieval processes. Forty-five participants, divided into high and low cognitive reserve groups, conducted a recognition experiment where they were asked to discriminate between studied and non-studied words that varied in perceptual familiarity. The results indicated that participants were able to use perceptual familiarity to improve their level of recognition. More importantly, people with high cognitive reserve used familiarity better than those with low cognitive reserve. The results provide the first empirical evidence indicating that people with high cognitive reserve are more efficient at balancing recollection and familiarity processes, and thus maintain a better performance level than those with low cognitive reserve.     

从知觉负载理论来理解选择性注意

知觉负载理论被认为解决了选择性注意研究的早选择和晚选择观点之争。当前任务对注意资源的耗用程度决定了与任务无关的干扰刺激得到多少加工,从而导致在低知觉负载下,注意资源自动溢出去加工干扰刺激（晚选择）,而在高知觉负载下,注意资源被当前任务耗尽而无法加工干扰刺激（早选择）。知觉负载理论提出后,研究者进行了一系列研究。一部分工作专注于知觉负载对选择性注意的调节作用;另外一些工作则关注其他认知过程如何影响注意资源的分配,其中知觉负载与工作记忆负载的关系是当前关注重点。     

Perceptual Load Induces Inattentional Blindness in Drivers

Perceptual load theory states that the level of perceptual load in a task predicts the processing of task‐irrelevant information. High perceptual load has been shown to result in increased inattentional blindness; however, there is little evidence that this extends beyond artificial computer‐based tasks to real‐world behavior. In this study, we adapted a typical load‐blindness paradigm for use in a driving simulator. Forty‐two drivers performed a series of gap perception tasks where they judged if their vehicle could fit between two parked vehicles, with the task imposing either low or high perceptual load. Awareness for an unexpected pedestrian or animal at the side of the road was found to be significantly lower in the high perceptual load condition. This study is the first to demonstrate perceptual load effects on awareness in an applied setting and has important implications for road safety and future applied research on the perceptual load model.Copyright © 2016 John Wiley & Sons, Ltd.     

Under High Perceptual Load,Observers Look but Do Not See

High perceptual load reduces distractor processing and increases inattentional blindness for unexpected stimuli. We reported previously that high perceptual load reduces memory accuracy and impairs eyewitness identification. Here, we used eye tracking to investigate whether memory impairments under load are due to inattentional blindness or a failure to visually inspect stimuli. Seventy‐two participants viewed high or low load versions of a video depicting a theft and identified characters in the video from photographic line‐ups. High perceptual load impaired participants' ability to identify the peripheral character (witness) but not the central character (thief). There was no effect of perceptual load on number of ocular fixations on the witness, time to first fixation or total visit duration. We conclude that memory impairments under load are due to attentional failures rather than differences in visual search behaviour. These findings suggest that high perceptual load scenes may hamper eyewitnesses' ability to encode easily visible stimuli. Copyright © 2017 John Wiley & Sons, Ltd.     

工作记忆负载对位置干扰子激活加工和抑制加工的影响

针对工作记忆（WM）负载对干扰子加工的影响存在认知控制机制和负载特异机制两种分歧观点的争议及Park等人的负载特异机制研究中存在的不足,文章尝试采用干扰效应和负启动效应双指标考察了三种不同类型的WM负载对位置干扰子加工的影响。结果表明,WM负载对位置干扰子加工的影响存在双重作用机制（认知控制机制和负载特异机制）;目标刺激与干扰子刺激的属性一致时,亦可得出负载特异机制观点,且可将WM任务与选择性注意任务之间竞争的资源锁定为知觉处理资源;导致上述两种观点争议的原因是以往研究未将干扰子加工过程分离为激活加工阶段和抑制加工阶段来考察;用双指标分离干扰子加工阶段的研究思路和方法不但可解决这两种观点的争议且可为两者的统合奠定基础。     

知觉负载影响注意选择和冲突解决的系列效应

研究考察了无关侧抑制项引起的侧抑制效应如何受到当前试次知觉负载和先前试次知觉负载与目标?侧抑制项关系的交互影响。被试在视觉搜索集中搜索目标朝向刺激(水平或竖直朝向)并作辨别反应, 非目标项在低负载条件下彼此朝向一致, 在高负载条件下彼此朝向不一致。在搜索集的左侧或右侧存在一个与当前目标一致或不一致的无关侧抑制项(flanker)。结果发现, 整体上, 在当前试次低负载条件下会产生较大的干扰效应, 而在当前试次高负载下无干扰效应。此外, 先前试次(trial n-1)为高负载条件时, 当前试次(trial n)出现了典型的知觉负载效应, 即低负载条件干扰效应较大, 高负载条件无干扰效应。但是, 先前试次为低负载条件时, 当前试次的干扰效应大小受到先前试次冲突解决状态的影响。先前试次为低负载条件且目标?无关侧抑制项不一致时, 下一试次低负载条件的侧抑制效应显著减小, 与高负载条件没有差异; 反之, 先前试次为低负载且目标?侧抑制项一致条件时, 下一试次低负载条件的侧抑制效应显著增大。先前试次为低负载条件时, 完成了知觉加工的侧抑制项或者引发了冲突效应(不一致条件), 或者促进了对目标的反应(一致条件), 造成不同的注意选择和冲突解决状态, 显著影响了下一试次的行为表现。这说明, 注意选择与冲突控制过程是动态变化的, 除了受到当前试次知觉负载的影响, 也受到先前试次注意选择和冲突解决状态的调节。     

Perceptual load influences selective attention across development

Research suggests that visual selective attention develops across childhood. However, there is relatively little understanding of the neurological changes that accompany this development, particularly in the context of adult theories of selective attention, such as N. Lavie's (1995) perceptual load theory of attention. This study examined visual selective attention across development from 7 years of age to adulthood. Specifically, the author examined if changes in processing as a function of selective attention are similarly influenced by perceptual load across development. Participants were asked to complete a task at either low or high perceptual load while processing of an unattended probe stimulus was examined using event related potentials. Similar to adults, children and teens showed reduced processing of the unattended stimulus as perceptual load increased at the P1 visual component. However, although there were no qualitative differences in changes in processing, there were quantitative differences, with shorter P1 latencies in teens and adults compared with children, suggesting increases in the speed of processing across development. In addition, younger children did not need as high a perceptual load to achieve the same difference in performance between low and high perceptual load as adults. Thus, this study demonstrates that although there are developmental changes in visual selective attention, the mechanisms by which visual selective attention is achieved in children may share similarities with adults.     

认知负荷对网页广告加工过程的影响

利用眼动记录技术,以33名大学生为被试,探讨了认知负荷对网页广告加工过程的影响。结果发现：（1）不同认知负荷水平下被试对网页广告的再认率存在显著差异,低认知负荷条件下的再认率较高,高认知负荷条件下的再认率较低;（2）与高认知负荷条件相比,被试在低认知负荷条件下对网页广告的注视次数更多,凝视时间更长。实验表明,认知负荷影响网页广告的加工过程。     

加工焦点性和任务负荷对不同认知方式大学生前瞻记忆的影响

采用双任务范式,探讨了加工焦点性和进行中任务负荷对不同认知方式大学生前瞻记忆的影响。包括两个实验:实验一探讨进行中任务与前瞻记忆任务加工的焦点性和加工类型的一致性对不同认知方式大学生前瞻记忆的影响;实验二探讨进行中任务负荷对不同认知方式大学生在在焦点加工和非焦点加工条件下前瞻记忆的影响。结果显示:焦点加工条件下的前瞻记忆成绩高于非焦点加工,且不受进行中任务负荷的影响;不管进行中任务与前瞻记忆任务的加工类型是否一致,在进行中任务负荷较高且非焦点加工条件下,场独立大学生的前瞻记忆成绩高于场依存大学生。本研究结果支持多重加工理论。     

GLOMOsys: A Systems Account of Global Versus Local Processing

Within GLOMO^sys (the GLObal versus LOcal processing MOdel, a systems account) we examine the functionalities of two processing systems that process information either globally or locally (looking at the forest vs. the trees). GLOMO^sys suggests that (a) global versus local perceptual processing carries over to other tasks; (b) perceptual processing is related to conceptual processing (e.g., creative/analytic tasks; face/verbal recognition; similarity/dissimilarity generation; abstract/concrete construals, distance estimates, inclusive/exclusive categorization; assimilation/contrast in social judgments); (c) perceptual and conceptual processing is elicited by real-world variables (e.g., mood, exteroceptive and interoceptive cues of approach/avoidance, promotion/prevention focus, high/low power, distance, obstacles, novelty/familiarity, love/sex, interdependent/independent selves); (d) regulatory focus, psychological distance, and novelty are driving effects; and (e) the global system (glo-sys) processes novelty and the local system (lo-sys) processes familiarity. We discuss whether glo-sys is responsible for understanding meaning, relate the systems to physiological research, and discuss new research questions.     

工作记忆负荷对反馈加工过程的影响:来自脑电研究的证据

个体对行为后反馈结果的加工在学习和环境适应方面有重要意义,工作记忆负荷(working memory load,WM load)如何影响反馈加工过程尚不清楚。采用双任务范式,设置基线、低WM load、高WM load三种条件,结合ERP技术对这一问题进行探究。发现RewP (reward positivity,奖赏正波)对效价敏感,而不受WM load条件影响;Theta震荡的正、负反馈差异波在高WMload条件下比在低WM load条件下小。结果支持等级强化学习-前扣带回理论(HRL-ACC, hierarchical reinforcement learning theory of anterior cingulate cortex)对于RewP和theta震荡的观点:RewP反映了反馈效价评估功能, theta震荡反映了认知控制功能,并且WM load选择性影响了ACC的认知控制功能而不是反馈效价评估功能。     

Interference from familiar natural distractors is not eliminated by high perceptual load

A crucial prediction of perceptual load theory is that high perceptual load can eliminate interference from distractors. However, Lavie et al. (Psychol Sci 14:510–515, 2003) found that high perceptual load did not eliminate interference when the distractor was a face. The current experiments examined the interaction between familiarity and perceptual load in modulating interference in a name search task. The data reveal that high perceptual load eliminated the interference effect for unfamiliar distractors that were faces or objects, but did not eliminate the interference for familiar distractors that were faces or objects. Based on these results, we proposed that the processing of familiar and natural stimuli may be immune to the effect of perceptual load.     

冲突视阈下类别信息与个体信息知觉负载的认知控制效应

个体根据知觉选择、反应偏向以及实时更新的情境信息调节自身状态,以适应性地促进对当前知觉信息的灵活编码,这一过程即为印象形成的认知控制。采用词语判断任务与侧抑制任务的变式将他人信息(类别信息vs.个体信息)分成高、低知觉负载两种水平,考察了冲突视阈下认知控制策略对他人印象形成的调控作用及知觉负载的效应。结果发现:(1)知觉负载影响他人印象形成的认知控制策略。(2)当类别信息与个体信息存在知觉冲突且个体的知觉负载较高时,受到反应性控制的作用,他人印象形成易出现冲突适应偏向; 当个体的知觉负载较低时,他人印象形成易受主动性控制的作用,从而产生冲突抑制偏向。这些结果表明,当个体形成他人印象时,其认知控制策略因受知觉负载影响而呈现分阶段加工特征。     

Alexithymia and levels of processing: Evidence for an overall deficit in remembering emotion words

Alexithymia is a multifaceted personality construct that is thought to reflect a deficit in the cognitive processing of emotions. The effects of low vs. high Alexithymia, neutral vs. positive vs. negative words processed, and perceptual vs. semantic processing on memory were investigated in a group of 82 students using the levels of processing paradigm and the Remember/Know procedure. No differences were observed between low and high Alexithymia students when neutral material was considered. However, for both levels of processing, high Alexithymia students recalled fewer emotion words (both positive and negative) when “Remember” responses were considered. “Know” responses were comparable across Alexithymia groups. The deficit in the ability to consciously access emotional material (the “Remember” responses) may help explain the impaired regulation of intense emotional states by high Alexithymia individuals.     

认知负载对基于动机的情绪刺激加工的影响

结合数数任务和情绪flanker任务,探究不同认知负载条件下,高低趋近动机对情绪刺激加工的影响。结果发现：高负载组中,高趋近动机条件下,对积极目标刺激的反应显著快于消极目标刺激;低趋近动机条件下,对消极目标刺激的反应显著快于积极目标刺激。且高负载组中,各条件下的反应大多都显著慢于低负载组。低负载组中没有发现各条件之间的差异。结果表明,高负载条件下,高趋近动机促进了积极情绪刺激的加工,低趋近动机促进了消极情绪刺激的加工,高负载在一定程度上阻碍了情绪刺激的加工。