“内在”与“外在”谁更加重要?相貌与人格词汇认知加工的眼动研究

研究采用迫选实验范式,以43名大学生作为被试,采用眼动技术探究相貌和人格词汇认知加工的眼动模式。眼动结果发现:注视积极相貌词汇的总注视时间长于积极人格词汇的时间;注视消极相貌词汇的时间长于注视消极人格词汇的时间,注视点也更多;被试注视积极相貌词汇的平均瞳孔尺寸大于注视积极人格词汇的平均瞳孔尺寸,注视消极相貌词汇的平均瞳孔尺寸大于消极人格词汇的平均瞳孔尺寸。结果表明相貌和人格词汇认知加工的早期阶段不存在显著差异,晚期阶段存在显著差异;相比于内在人格而言,被试可能更加看重外在的相貌。     

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。     

当前阅读研究中眼动指标述评

文章重点介绍了阅读研究中常用的眼动指标,它们包括注视时间、眼跳、回视和瞳孔直径等,从字和区域这两个方面探讨了这些眼动指标所反映的认知加工过程,以及选择这些指标时应该注意的问题。最后对眼动指标的选择和使用等问题提出了几点看法。     

运用眼动指标探测个体的内隐攻击性

以黑白线条人物画为实验材料,采用Eyelinkll型眼动仪,对14名大学生观看攻击者、被攻击者以及中性人物图片的眼动指标进行分析.研究结果发现:(1)被试观看攻击者和被攻击者的平均瞳孔大小显著大于观看中性人物时的平均瞳孔大小;(2)被试注视攻击者的时间显著高于注视中性人物和被攻击者的时间;(3)被试对攻击者的凝视次数,显著高于对中性人物和被攻击者的凝视次数.本研究的结果表明,个体对攻击性材料具有自动化的偏好.     

眼动技术在个体认知能力差异研究中的应用

本文从可能性和可行性两方面介绍和论述了眼动技术在个体认知能力差异研究中的应用。在可能性方面,个体眼动特征具有的良好的重测信度和内部一致性信度;在可行性方面,已有研究利用注视和眼跳相关指标、眼动轨迹和瞳孔直径这三类指标对该问题进行探索,结果均发现这些眼动特征与认知能力之间存在着密切关系。今后研究应继续深入探索两者关系的内在认知和神经机制,并尝试结合人工智能算法开发高信效度的眼动认知测验。     

面孔吸引力观察者参照:“角度效应”的眼动研究

以标准的黑白面孔图片作为实验材料,让41名大学生观看不同倾斜角度(左倾、竖直和右倾)的面孔图片,并对之进行面孔吸引力的评价,同时用眼动仪记录被试的眼动数据。结果显示:(1)被试观看左倾和右倾面孔的平均瞳孔大小显著小于观看竖直面孔的平均瞳孔大小,观看左倾面孔的平均瞳孔大小显著大于右倾面孔;(2)被试对左倾和右倾面孔的平均注视时间显著短于对竖直面孔的平均注视时间,同时对左倾面孔的注视时间显著长于右倾面孔;(3)被试对左倾和右倾面孔的平均注视次数显著少于对竖直面孔的平均注视次数。实验结果表明,面孔的倾斜角度很可能是影响面孔吸引力的一个重要因素,在面孔吸引力的审美偏好中存在"角度效应",即竖直面孔的吸引力高于倾斜面孔的吸引力,左倾面孔的吸引力高于右倾面孔的吸引力。     

场认知风格条件下罗夏墨迹测验的眼动研究

通过《团体图形镶嵌测验》从201名大学生中筛选出48名具有典型场独立与场依存特征的大学生为被试,采用Eyelink 2000型眼动仪,研究探讨不同认知风格者注视罗夏墨迹图时的眼动规律及其反应特点。结果显示:(1)在自由反应阶段,场依存者眼跳次数少,平均眼跳距离大,而反应时和注视次数都较少;场独立者反之。且图片颜色对被试反应有显著影响。彩色图片眼跳次数多,平均眼跳距离小,而反应时和注视次数都较多;非彩色图片反之。(2)在提问阶段,场认知风格在该阶段主效应显著,且一般眼动指标的规律与自由反应阶段的一致。有色彩反应(C)的反应时、注视次数和眼跳次数均显著大于没有色彩反应(UC)的。(3)反应规律:不同认知风格被试的运动反应次数差异显著,场独立者多于场依存者。     

阅读研究中的主要眼动指标评述

眼跳和注视是阅读过程中的两种基本眼动现象.目前在对阅读的眼动研究中分析指标主要包括两类,一类是与眼睛何时移动有关的时间维度的眼动指标,具体包括以字或词为兴趣区的眼动指标,如单一注视时间、首次注视时间、第二次注视时间、凝视时间、离开目标后的首次注视时间、回视时间和总注视时间等,以及以短语或句子为兴趣区的眼动指标,如第一遍阅读时间、向前阅读时间、第二遍阅读时间、回视路径阅读时间、重读时间等.另一类是与眼睛移动位置有关的空间维度的眼动指标,具体包括眼跳距离、注视位置、注视次数、跳读率、再注视比率和回视次数等.在使用眼动指标时,需要注意眼动指标的分类、原始数据的删除标准以及眼动指标的选择等问题.     

音乐对认知加工过程影响的眼动研究

采用眼动记录技术探讨音乐对认知加工过程的影响.结果发现:(1)音乐导致认知加工成绩下降,对复杂题的加工成绩影响更大;(2)音乐导致认知加工时间延长,加工速度下降;(3)音乐改变了认知加工过程的眼动模式:注视次数增加,注视频率下降,注视点持续时间延长,眼跳距离缩小.结果提示,音乐改变了认知过程的跟动模式,导致认知加工准确性下降.两者关系密切.音乐通过对认知加工过程的改变影响认知加工结果.     

大学生问题发现过程的眼动研究

在潜藏式与矛盾式两类问题发现情境中, 以眼动仪为研究工具, 问题发现能力高与低的大学生各20名为被试, 探讨大学生在问题发现总体和4个兴趣区中的眼动特征及其与发现问题数量和质量之间的关系。研究表明：(1)不同能力大学生在不同情境及其兴趣区中的问题发现差异, 能够体现在眼动指标上。回视是反映问题发现能力的敏感指标。回视次数和发现问题数量与质量之间的正相关, 以及在高能力组学生上的优势, 体现了信息的联系和整合性加工在问题发现中具有积极意义。(2)潜藏式问题发现中, 个体平均注视时间更长, 反映其认知加工难度更大。在提供重要信息的区域, 被试会投入更多精力, 表现为在注视时间、注视次数和瞳孔直径大小等指标的上升。(3)眼睛注视区域与发现问题区域间存在对应关系, 显示出“眼随心动”现象。在问题发现的最初和最终阶段, 被试都会出现跨区信息搜寻行为, 分别代表了对问题线索的寻找和最后的检查评估。高能力被试在每个稳定注视阶段的注视时间更短, 这种信息转换的灵活性体现出其信息加工上的优势。动态眼动轨迹分析揭示了单个静态指标难以反映的新特点。     

Pupil diameter measurement errors as a function of gaze direction in corneal reflection eyetrackers

Pupil dilation is a useful, noninvasive technique for measuring the change in cognitive load. Since it is implicit and nonverbal, it is particularly useful with preverbal or nonverbal participants. In cognitive psychology, pupil dilation is most often measured by corneal reflection eye-tracking devices. The present study investigates the effect of gaze position on pupil size estimation by three common eye-tracking systems. The task consisted of a simple object pursuit situation, as a sphere rotated around the display screen. Systematic errors of pupil size estimation were found with all three systems. Implications for task-elicited pupillometry, especially for gaze-contingent studies such as object tracking or reading, are discussed.     

视频教学中教师的眼神注视能否促进学习?

教师的眼神注视是在视频学习中重要但易被忽视的元素。以往理论存在两种对立的观点：其中准社会交往理论和社会代理理论支持教师的眼神注视促进学习; 而基于多媒体学习认知理论与认知负荷理论认为教师的眼神注视会阻碍学习效果。通过汇总以往实证研究得出如下结论：首先, 教师的眼神注视对学习效果具有小的促进效应, 即教师的眼神注视能够促进学习者的保持成绩(d_保持 = 0.41)和迁移成绩(d_迁移 = 0.39); 其次, 在主观体验上, 教师的眼神注视对准社会交往也具有小的促进效应(d_{准社会交往} = 0.35), 而教师的眼神注视对认知负荷影响十分微弱(d_认知负荷 = -0.02); 最后, 在对学习材料的注意加工上, 教师的眼神注视总体上影响比较微弱(d_注视时间 = 0.06, d_{首次注视时间} = -0.15)。未来研究需要对不同注视类型、先前知识经验、学习材料性质以及认知神经方法进一步探究。     

Positive Gaze Preferences in Older Adults: Assessing the Role of Cognitive Effort with Pupil Dilation

ABSTRACT

Older adults display positive preferences in their gaze, consistent with their prioritization of emotion regulation goals. While some research has argued that substantial amounts of cognitive effort are necessary for these information-processing preferences to occur, other work suggests that these attentional patterns unfold with minimal cognitive exertion. The current study used an implicit regulatory context (i.e., viewing facial stimuli of varying emotions) to assess how much cognitive effort was required for positive attentional preferences to occur. Effortful cognitive processing was assessed with a direct measure of change in pupil dilation. Results indicated that minimal cognitive effort was expended when older adults engaged in positive gaze preferences. This finding suggests that gaze acts as a rather effortless and economical regulatory tool for individuals to shape their affective experience.     

On-to-off-path gaze shift cancellations lead to gaze concentration in cognitively loaded car drivers: A simulator study exploring gaze patterns in relation to a cognitive task and the traffic environment

Appropriate visual behaviour is necessary for safe driving. Many previous studies have found that when performing non-visual cognitive tasks, drivers typically display an increased amount of on-path glances, along with a deteriorated visual scanning pattern towards potential hazards at locations outside their future travel path (off-path locations). This is often referred to as a gaze concentration effect. However, what has not been explored is more precisely how and when gaze concentration arises in relation to the cognitive task, and to what extent the timing of glances towards traffic-situation relevant off-path locations is affected. To investigate these specific topics, a driving simulator study was carried out. Car drivers’ visual behaviour during execution of a cognitive task (n-back) was studied during two traffic scenarios; one when driving through an intersection and one when passing a hidden exit. Aside from the expected gaze concentration effect, several novel findings that may explain this effect were observed. It was found that gaze shifts from an on-path to an off-path location were inhibited during increased cognitive load. However, gaze shifts in the other direction, that is, from an off-path to an on-path location, remained unaffected. This resulted in on-path glances increasing in duration, while off-path glances decreased in number. Furthermore, the inhibited off-path glances were typically not compensated for later. That is, off-path glances were cancelled, not delayed. This was the case both in relation to the cognitive task (near-term) and the traffic environment (far-term). There was thus a general reduction in the number of glances towards situationally relevant off-path locations, but the timing of the remaining glances was unaffected. These findings provide a deeper understanding of the mechanism behind gaze concentration and can contribute to both understanding and prediction of safety relevant effects of cognitive load in car drivers.     

Detecting drivers’ cognitive load from saccadic intrusion

In this paper, we have explored use of Saccadic Intrusion to detect drivers’ cognitive load and instantaneous perception of developing road hazards. Saccadic Intrusion is a type of eye gaze movement which was earlier found to be related to change in cognitive load. We have developed an algorithm to detect saccadic intrusion from a commercially available low-cost eye gaze tracker and conducted four user studies involving a driving simulator and cognitive and hazard perception tests. Our results show that average velocities of saccadic intrusion increases with increase in cognitive load and recording saccadic intrusion and eye blinks for 6 s duration can predict drivers’ instantaneous perception of developing road hazards.     

瞳孔是心灵的窗口吗?——瞳孔在心理学研究中的应用及测量

瞳孔大小是眼动研究中一个重要的参数指标, 在一定程度上能够反映人的心理活动并影响他人的心理与行为。一方面, 瞳孔变化受到自上而下的知觉与注意、情绪与动机、心理努力、社会认知与发展等因素的影响, 另一方面, 大瞳孔能引起他人更多的积极评价和积极行为。瞳孔的神经机制(蓝斑-去甲肾上腺素系统)和自适应增益理论解释了瞳孔与心理之间存在紧密联系的原因。瞳孔测量(pupillometry)作为一种有效的眼动追踪方法有助于理解瞳孔与心理的关系, 研究者在测量瞳孔时需要关注无关变量(如亮度、注视位置), 原始数据处理(如基线校正、眨眼处理)及瞳孔指标选取(如瞳孔直径、震颤频率)等问题, 未来研究应继续探讨瞳孔与其他心理之间的关系, 并探索更有效地处理和使用瞳孔指标的方法。     

阅读中疲劳、心理负荷因素对瞳孔大小的调节作用

以大学生为被试,探讨文本阅读过程中,疲劳和心理负荷因素对瞳孔大小的调节作用。实验一主要检验文本阅读中的疲劳效应;实验二分析不同文本加工水平者的瞳孔变化差异,以探讨疲劳和心理加工对瞳孔变化的作用。结果表明：在文本阅读中,疲劳会使瞳孔缩小,心理负荷增大会使瞳孔放大,一定的心理负荷可以起到维持瞳孔大小不变的作用;疲劳和心理负荷因素对瞳孔大小的调节存在颉颃效应。     

Pupillary Stroop effects

We recorded the pupil diameters of participants performing the words’ color-naming Stroop task (i.e., naming the color of a word that names a color). Non-color words were used as baseline to firmly establish the effects of semantic relatedness induced by color word distractors. We replicated the classic Stroop effects of color congruency and color incongruency with pupillary diameter recordings: relative to non-color words, pupil diameters increased for color distractors that differed from color responses, while they reduced for color distractors that were identical to color responses. Analyses of the time courses of pupil responses revealed further differences between color-congruent and color-incongruent distractors, with the latter inducing a steep increase of pupil size and the former a relatively lower increase. Consistent with previous findings that have demonstrated that pupil size increases as task demands rise, the present results indicate that pupillometry is a robust measure of Stroop interference, and it represents a valuable addition to the cognitive scientist’s toolbox.     

Systematic influence of gaze position on pupil size measurement: analysis and correction

Cognitive effort is reflected in pupil dilation, but the assessment of pupil size is potentially susceptible to changes in gaze position. This study exemplarily used sentence reading as a stand-in for paradigms that assess pupil size in tasks during which changes in gaze position are unavoidable. The influence of gaze position on pupil size was first investigated by an artificial eye model with a fixed pupil size. Despite its fixed pupil size, the systematic measurements of the artificial eye model revealed substantial gaze-position-dependent changes in the measured pupil size. We evaluated two functions and showed that they can accurately capture and correct the gaze-dependent measurement error of pupil size recorded during a sentence-reading and an effortless z-string-scanning task. Implications for previous studies are discussed, and recommendations for future studies are provided.     

Mapping and correcting the influence of gaze position on pupil size measurements

Pupil size is correlated with a wide variety of important cognitive variables and is increasingly being used by cognitive scientists. Pupil data can be recorded inexpensively and non-invasively by many commonly used video-based eye-tracking cameras. Despite the relative ease of data collection and increasing prevalence of pupil data in the cognitive literature, researchers often underestimate the methodological challenges associated with controlling for confounds that can result in misinterpretation of their data. One serious confound that is often not properly controlled is pupil foreshortening error (PFE)—the foreshortening of the pupil image as the eye rotates away from the camera. Here we systematically map PFE using an artificial eye model and then apply a geometric model correction. Three artificial eyes with different fixed pupil sizes were used to systematically measure changes in pupil size as a function of gaze position with a desktop EyeLink 1000 tracker. A grid-based map of pupil measurements was recorded with each artificial eye across three experimental layouts of the eye-tracking camera and display. Large, systematic deviations in pupil size were observed across all nine maps. The measured PFE was corrected by a geometric model that expressed the foreshortening of the pupil area as a function of the cosine of the angle between the eye-to-camera axis and the eye-to-stimulus axis. The model reduced the root mean squared error of pupil measurements by 82.5 % when the model parameters were pre-set to the physical layout dimensions, and by 97.5 % when they were optimized to fit the empirical error surface.