眼跳任务中的偏心距效应

采用完全被试内设计,控制了眼跳任务类型(朝向眼跳、反向眼跳)和目标偏心距水平,考察了大学生在两种眼跳任务中的偏心距效应,即目标刺激相对于屏幕中心的距离对于眼跳过程的影响.研究结果发现:(1)反向眼跳任务中的首次眼跳方向错误率显著高于朝向眼跳,眼跳潜伏期也显著较长.(2)在朝向和反向眼跳过程中,都出现了目标的偏心距效应,即随着目标偏心距的增大,眼跳潜伏期缩短,眼跳落点视角增大.     

反向眼跳的实验范式、机制及影响因素

反向眼跳任务是研究内源性眼跳的主要方法。1978年,Hallett在研究中首次使用了反向眼跳的实验任务。实验中要求被试抑制对外围目标的注视,并注视它的相反位置。反向眼跳任务是研究行为控制以及注意功能的有效范式。目前认为反向眼跳任务中的朝向眼跳和反向眼跳计划是同时加工并相互竞争的,并且反向眼跳的产生与额顶叶皮层下组织有关。反向眼跳会受到多种因素的影响,例如,空白效应、工作记忆、认知老化、目标离心率等。     

眼跳的研究范式及其主要认知功能

眼跳运动系统为研究者探索行为的认知控制机制提供了有力工具。已有研究发现,很多认知过程会影响不同类型眼跳任务中的眼跳参数。在系统梳理已有研究的基础上,从以下4个方面系统阐述和评价了眼跳运动的研究范式和主要认知功能：（1）视觉导向眼跳的研究范式和变式及其认知功能,包括空白/重叠效应、分心物效应、提示效应、学习效应等;（2）预测性眼跳的研究范式和认知控制,涉及神经生物钟理论、视空间工作记忆、指导语等;（3）记忆导向眼跳的研究范式和变式及其认知控制,包括分心物效应、年龄效应、视空间工作记忆的抑制效应、注意等;（4）反向眼跳的研究范式和变式及其认知控制,包括反向眼跳抑制、眼跳决策信号竞争整合模型、工作记忆容量、注意、错误监控、学习、奖励和年龄效应等。最后,结合已有研究范式对未来眼跳研究的趋势和需解决的问题进行了展望。     

奖励和惩罚在注意控制过程中的优化和分离：眼动研究

通过两个眼动实验考察金钱奖励和惩罚引起的动机对个体在不同空间线索条件下注意控制加工的影响。实验1采用朝向/反向眼跳范式, 被试通过内源性线索提供心理准备的情况下做出简单的朝向眼跳以及需要抑制优势反应的反向眼跳。结果发现, 相比无奖惩条件, 奖励条件下朝向眼跳任务的正确率更高, 惩罚条件下反向眼跳任务的正确率更高; 两种眼跳任务中有奖惩条件下的眼跳峰速度均比无奖惩条件高。实验2采用Go/No-go任务, 进一步探讨了由副中央凹加工外源性边缘线索从而不能提供充分心理准备的情况下奖励和惩罚对注意控制的影响。结果发现, 奖励条件下Go反应的眼跳潜伏期更短, 惩罚条件下No-go反应正确率更高, 眼跳峰速度在两种条件下均比无奖惩条件高。以上结果表明, 奖励和惩罚均能够促进个体的注意控制, 但二者的加工过程是分离的, 奖励能够改善趋近行为, 惩罚则能够显著促进抑制控制行为, 且奖励和惩罚在注意控制加工过程中具有不同的作用模式, 奖励能够更早唤醒注意控制系统从而更快地促进行为的发生与执行, 惩罚则能够通过调节注意资源促进以目标为导向的行为中对优势反应的抑制。     

手机成瘾者抑制控制能力特点：来自反向眼跳任务的证据

为深入研究手机成瘾者的抑制控制能力特点,使用手机成瘾倾向量表筛选34名被试,手机成瘾组与非手机成瘾组各17名被试完成反向眼跳范式测量。结果发现：(1)手机成瘾组反向眼跳错误率显著高于非手机成瘾组。(2)手机成瘾组朝向眼跳潜伏期显著短于非手机成瘾组。结果表明,手机成瘾组抑制控制能力显著低于非手机成瘾组,反向眼跳任务成绩较差。这表明手机成瘾者较容易受自下而上的刺激驱动,较难抑制无关刺激产生的注意干扰。     

内隐序列学习表征机制探究：眼动证据

内隐序列学习的表征机制是内隐学习研究领域的基本问题, 还存在争议。采用眼动追踪技术, 通过3个实验探讨内隐序列学习的表征机制。结果发现, 知觉序列混合眼跳和反应序列混合眼跳条件下发生序列学习; 朝向眼跳和反向眼跳条件下发生序列学习; 有、无分心反向眼跳下发生序列学习, 两者序列学习量差异不显著。整个研究表明, 内隐序列学习的表征依赖于序列信息。     

气质与眼动控制的关系

本研究采用眼动追踪和问卷测量相结合的方法,对气质类型和眼动控制的关系进行了探讨。眼动实验为2（眼跳方向：朝向眼跳和反向眼跳）X 2（任务类型：重复眼跳和转换眼跳）组内设计;气质分数用陈会昌编制的《气质类型测试量表》测量。结果表明,气质分数与眼动特性之间存在显著的相关性,不同气质类型（神经活动类型）在抑制过程和任务重置过程中表现出不同的相互作用模式。具体而言,神经活动强度是一个基本维度,它与认知控制的抑制功能和转换功能都有着密切联系;而神经活动的灵活性和平衡性则分别是转换功能和抑制功能的重要条件。     

眼跳的双相调节理论的行为证据

为了研究眼跳的双相调节理论是否适用于人类的视觉系统,本研究测量了人类被试对分别呈现在三种眼跳时间段（基线、眼跳抑制和眼跳增强）内的光栅的朝向辨别准确率。研究发现：相对于光栅呈现在基线时间段内,被试对呈现在抑制（或增强）时间段内的光栅的朝向辨别准确率显著地更低（或更高）（实验1）;另外,只有使用低或中等空间频率光栅作为测试刺激时,才有这种双相调节作用（实验2）。这些结果表明：人类的视觉系统在眼跳过程中存在双相调节机制,并且这种双相调节机制具有刺激选择性。     

自主控制眼跳：实验范式、神经机制和应用

自主控制眼跳是眼跳类型之一。自主控制眼跳实验范式为研究各种脑损伤,神经疾病和精神失调提供了一种新的研究手段,为研究眼跳的神经机制以及反应抑制、空间工作记忆等高级认知功能提供了重要的方法。文章介绍了自主控制眼跳的两种实验范式：反向眼跳和记忆导向眼跳,阐述了自主控制眼跳的神经机制及其实验范式的应用,指出自主控制眼跳实验范式为评定精神分裂症等脑功能失调病人的神经功能状态提供了重要的信息,为研究各种脑功能失调和精神疾病提供了重要的研究方法。今后的研究趋势是眼跳研究与神经成像技术和临床观察相结合     

成人注意缺陷多动障碍在内外源冲突时的表现:眼动的证据

在注意定向与维持上,注意缺陷多动障碍(ADHD)个体更容易受到外部刺激的干扰而导致目标任务加工进程受阻,表现出了注意定向反应的缺陷,但导致任务失败的原因是由于对突然出现的外部无关刺激的过度兴奋还是对内源性目标刺激的持续维持能力减弱,尚不清楚。研究采用反向眼跳范式、记忆导向眼跳范式和视觉导向眼跳范式,来探索成人ADHD内外源注意定向反应的情况,以及当二者发生冲突时,成人ADHD失败的可能机制。结果发现,在反向眼跳任务上,成人注意缺陷多动障碍组错误率更高,并且差异性显著。但在记忆导向眼跳任务中,成人注意缺陷多动障碍组与正常组的差异不显著。在视觉导向眼跳任务中,成人注意缺陷多动障碍组的正确眼跳潜伏期比正常组要短,且二者之间的差异显著。这说明,在内外源刺激反应的冲突导致的情境中,成人注意缺陷多动障碍的反应明显落后于正常个体,这种缺陷并非由于其维持内源性注意产生定向反应落后所导致的,而是与其外源注意定向反应过强有关。     

The Factor of Sex in Testimonial Accuracy

Abstract

The study assessed the effects of character, professional status, and intentions of a criminal on the magnitude of suggested punishment in a hypothetical experimental setting. The sample was composed of 120 male Indian undergraduates. The analysis yielded a significant main effect of intentions as well as interaction effects of Intentions × Character and of Intentions × Character × Status Factor. The results lend support to cognitive dissonance and attribution theories.     

SOURCE-RELATED DETERMINANTS OF PERCEIVED JOB SCOPE

The effect of manipulating source competence, locus of control, and social cues on perceived job scope was examined in an experimental study. A total of 185 business students participated in a 2×2×2×2 factorial research design. The design partitions were: task level (enriched versus unenriched), social cues (positive versus neutral), source competence (high versus low), and locus of control (high versus low). Subjects were screened on a locus of control measure such that those either in the upper or lower third score range were eligible to participate. A three-way interaction was found, involving source competence × social cues × locus of control on perceived job scope. The results of this study are discussed in terms of the Social Information Processing Approach (SIPA) to task design.     

“Transient structures”: The effects of practice and distractor grouping on within-dimension conjunction searches

It has been stated that whereas between-dimension (color × orientation) conjunctions can be searched in a “parallel” fashion, within-dimension (color × color) conjunctions are necessarily searched in a “serial self-terminating” fashion (Wolfe et al., 1990). We explored the effects of practice (within 1-h experimental session) and distractor grouping on within-dimension conjunction search tasks. In Experiments 1 and 3, the stimuli were rectangles formed by two adjacent squares; in Experiment 2, the stimuli were plus signs formed by two segments and an intersection. In Experiments 1 and 2, observers were assigned to one of two experimental conditions: In one, all the distractors shared a simple feature (the color blue); in the other, distractors did not share that simple feature. In the first condition, search became more efficient with practice and observers’ performance was characterized by a shallow reaction time (RT) × set size slope; in the second condition, observers’ performance did not improve as much with practice. We propose that the differential effects of practice between these two experimental conditions can be explained in terms of distractor grouping induced by the shared color of the distractors. Experiment 3 showed that, with practice, a shallow RT × set size slope characterized observers’ search for a color × color target among four different distractors that shared a common color. The present results contradict a main tenet of some current visual search models— namely, that within-dimension conjunctions cannot be searched in parallel, and question the validity of using RT × set size slope functions to distinguish between preattentive versus attentive search.     

Always on My Mind: Exploring How Frequent,Recent, and Vivid Television Portrayals Are Used in the Formation of Social Reality Judgments

Prior research has found consistent support for the heuristic processing model of cultivation effects, which argues that cultivation effects can be explained by the availability heuristic. The present study represents an experimental test of the heuristic processing model and tests the impact of frequency, recency, and vividness on construct accessibility and social reality beliefs. 213 students participated in a 2 × 2 × 2 prolonged exposure experimental design varying the frequency of exposure to violent television programs, the level of vividness in the programs, and recency of exposure. Dependent measures were accessibility and social reality beliefs. Results showed that reaction times were largely unresponsive to the independent variables. Although there were no main effects for frequency on social reality beliefs, there was a significant interaction between frequency and vividness on beliefs: People watching vivid violent media gave higher estimates of the prevalence of crime and police immorality in the real world in the 3× viewing condition than those in the 1× viewing condition. In concluding, it is argued that this study has important implications for the heuristic processing model, cultivation theory, and research into vividness effects.     

Aging and Memory in Skilled Language Performance

The issue of irreversible decrements versus developmental plasticity with aging was explored for skilled language users. Fifteen English teachers (22 to 31 years of age) and 15 retired English teachers (50 to 83 years of age) were tested for language memory, using a 2 × 2 × 2 (Recall vs. Recognition × Meaningful vs. Nonmeaningful × Incidental vs. Intentional) design, and for overall grammar-skill memory, using speed and error measures. On the language-memory test, experimental variables (but not the age variable) were related to performance. On the grammar-skill test, the older subjects showed longer completion times but no decrements in accuracy. The results provided support for developmental plasticity in language memory and suggested an optimistic view of memory for skilled content areas.     

Contrast Effects for Black,White, Male,and Female Interviewees1

The purpose of this study was to investigate whether target applicants of different race and/or sex affected the degree of contrast effect error, in an interview setting. This study was a 2 × 2 × 2 factorial ANOVA design (Preceding Applicants × Race × Sex). Undergraduates (N= 120) were randomly assigned to one of the eight experimental conditions. Each subject viewed and rated three videotaped interview simulations. As hypothesized, results indicated a large contrast effect, i.e., preceding applicant main effect. Furthermore, the results also revealed a significant three-way interaction. The ratings given to all target applicants in the Negative Predecessor condition were equally lenient, while the ratings given to ail target applicants in the Positive Predecessor condition were more variable. The focus of this condition was on the white male target applicant, who received the lowest ratings of any target applicant. Interpretation and suggestions for future research are discussed.     

Mediators between frustration and aggression in a field experiment

To assess some of the mediators between a frustrating incident and subsequent aggressive behavior in a field situation, 320 male and female subjects were assigned to one of 32 experimental conditions in a 2 × 2 × 2 × 2 × 2 factorial design. Either a male or female experimenter, saying “Excuse me” or not, dressed in high or low status clothing, cut in line in front of the subject, who was standing near the front or back of the line. Verbal and nonverbal aggressiveness were coded and summed to measure total aggression. Subjects near the front of the line or interacting with a low status experimenter were more aggressive than those at the back of the line or seeing a high status experimenter. Less aggression was directed against the female experimenter or one who said “Excuse me,” and there was a strong tendency for subjects to be more aggressive to a same-sex experimenter. It was suggested that further research on instigators to aggression be carried out in such field situations.     

SEX TRAIT STEREOTYPES OF ADULTS ACROSS DIFFERENT LIFE PERIODS

An attempt was made to identify the stereotypes that young Indian people hold of adults of their community representing the different life periods. Twelve groups of 30 subjects aged 18 to 19 years were the subjects. A 2×2×3 (sex of subjects × sex of target figures to be rated × age of target figures, young, middle-aged, elderly) experimental design was used. Each group rated one target figure on the Adjective Check List (ACL) devised by Gough and Heilbrun (1965). The major findings include (a) a decrease in the number of adjectives attributed to the target figures as a function of increasing age, (b) a greater number of traits to describe male than female target figures, (c) a similar trend for the stereotypes of the different figures, and (d) an increase in the unfavourable evaluation of the adjectives comprising the stereotypes related to the age of the target figures. Possible reasons for the findings were discussed.     

Attitudes Toward Male Oral Contraceptives: Implications for Models of the Relationship Between Beliefs and Attitudes1

Four factors (effectiveness, health risks, cost, and convenience) were orthogonally manipulated in a 3 × 2 × 2 × 2 factorial design to determine their relative importance in influencing attitudes toward and intentions to use male oral contraceptives. The experimental design also permitted a test of the assumption of additivity underlying expectancy-value models of attitude and the assumption of absence of context effects. Results were consistent with expectancy-value models of the relationship between beliefs and attitudes. In addition, it was found that health risks and effedtiveness, in that order, were the most important factors influencing receptivity to male oral contraceptives, with the effects of cost and convenience being mediated by these two factors. Sex differences in attitudes toward male oral contraceptives were also observed.     

学习不良儿童元记忆监测特点的研究

采用2×3×3的混合设计,对小学四~六年级61名学习不良儿童在固定学习时间和对项目逐项评定的学习条件下,元记忆监测特点进行了实验研究.结果表明:从元记忆判断等级差异来看,学习不良儿童在难度判断和知晓感判断上与对照组儿童无显著差异,但在学习判断上显著低于对照组儿童;从元记忆监测的准确性看,学习不良儿童元记忆监测水平与对照组儿童的差异主要表现为在个体身上发展较晚的前瞻式记忆监测上.