客体-空间表象和言语认知风格模型及其测量

在言语-表象认知风格模型中, 视觉表象认知风格一直被视为单一的结构, 且在此基础上发展出的各种测量方法均存在效度上的缺陷, 导致了研究者对该认知风格模型的普遍质疑。随着对视觉认知加工研究的深入, 尤其是对视觉客体表象与视觉空间表象在功能和解剖上的双分离的理解, 为进一步区分表象型认知风格提供了理论和实证依据, 进而促进了客体-空间表象和言语(Object-Spatial Imagery and Verbal, OSIV)认知风格模型的提出, 而在此基础上开发的新测量工具(Object-Spatial Imagery and Verbal Questionnaire, OSIVQ)具有良好的信、效度, 有力地支持了OSIV认知风格模型。OSIV认知风格模型及其测量为研究人类的认知风格以及视觉认知拓展了新视野。尽管如此, 两种不同视觉表象子系统并存于个体的视觉表象系统中, 因此, 它们分离的原因、相互作用及其与视觉注意之间的关系有待进一步研究。     

拥挤影响消费者情绪和购物反应的元分析

拥挤是由社会(人群)运动空间和物理空间受限引发的一种主观感受和客观状态。随着消费者所处的环境越来越拥挤, 近些年来消费者行为领域对拥挤的关注逐渐增多, 但目前的研究结论并不一致。本文通过元分析方法获得了38个研究、81个样本的149个效应值, 分别探讨了两类拥挤对消费者情绪和购物反应(趋近型购物反应与回避型购物反应)的影响, 并尝试找出以往研究结果表现出异质性的原因。从情绪层面来看, 社会拥挤正向影响消费者的消极情绪, 负向影响自主感知; 空间拥挤负向影响消费者积极情绪, 正向影响消极情绪。从购物反应层面来看, 社会拥挤会显著增强消费者的趋近型购物反应(ρ = 0.208, N = 28624), 增加风险规避, 并负向影响消费者的购物态度和意愿(ρ = -0.135, N = 10094); 空间拥挤对消费者趋近型购物反应的影响并不显著, 但能负向影响回避型购物反应(ρ = -0.409, N = 3223)。进一步的调节分析发现, 购物环境类型、研究情境的真实性、是否为学生样本、以及样本来源于西方国家还是东方国家等能够调节拥挤对消费者部分情绪和购物反应的影响。本文最后讨论了研究结果, 并对管理实践和未来研究提供了建议。     

语言线索对空间关系表征的影响及其机制

语言的获得会对空间认知产生深刻的影响。关于语言与空间认知,近些年来,不仅有大量的相关研究发现语言能力跟空间认知能力之间存在着密切的关联,还出现了实验研究,来试图直接揭示语言对空间关系表征的影响。研究发现,在一系列涉及不同空间关系的任务中,相较于非语言线索,语言线索提示的效果明显更好。在此基础上,从语言编码的特点和加工过程等方面进一步分析语言的作用机制,发现在空间表征中语言主要起到了选择和整合的作用,语言的作用过程是即时性的。建议未来研究在空间任务和语言表述形式上有更多的变式,从而更全面地来揭示语言的作用。     

Gerbils in space: performance on the 17-arm radial maze.

In Experiment 1 six hungry gerbils received six trials per day on a 17-arm radial maze. During each trial the subjects were allowed to choose freely among the arms, each of which contained a food pellet, until each arm had been visited once or until eight minutes had elapsed. An error was recorded when the subject entered a previously visited arm. The gerbils quickly learned not to re-enter previously visited arms and generally made errors on fewer than 15% of entries, performance comparable to that of the rat and superior to that of other species tested in the radial arm maze. The intertrial-interval duration did not affect accuracy of arm choices during acquisition but did influence asymptotic accuracy. Accuracy did not change systematically over the six trials. A high proportion of arm entries were to nearby arms. Errors occurred most often towards the end of a trial. Odor cues were not important. When the number of trials per day was reduced from six to one, accuracy deteriorated slightly. In Experiment 2 neither the transposition of extramaze cues nor the placement of the maze in a different room had large disruptive effects on accuracy. In Experiment 3 the addition of three explicit intramaze brightness cues aided accuracy, perhaps by permitting the subjects to decompose the large maze into three smaller mazes, although there was no direct evidence that this was the case. Implications of a number of these results for models of spatial maze performance were discussed.     

客体相似性对不同认知方式个体视觉工作记忆表征的影响

采用整体检测的变化察觉范式,探讨客体的相似性对客体—空间型认知方式个体视觉工作记忆表征的影响。行为结果显示,在不相似客体的视觉工作记忆表征任务中,客体型者在长延时条件的成绩优于空间型者,而在相似客体的视觉工作记忆表征任务中,两者无差异;ERP结果显示,在不相似客体视觉工作记忆表征任务中,与客体型者相比,空间型者在大脑皮层诱发出更大的负SP。以上结果表明,客体型者比空间型者对不相似客体视觉工作记忆加工具有优势,其潜在机制可能在于,客体型者对不相似客体视觉工作记忆表征时的神经活动效能更高。     

Conceptual Locations and Pronominal Reference in American Sign Language

We report the results of an experiment investigating the ramifications of using space to express coreference in American Sign Language (ASL). Nominals in ASL can be associated with locations in signing space, and pronouns are directed toward those locations to convey coreference. A probe recognition technique was used to investigate the case of "locus doubling" in which a single referent is associated with two distinct spatial locations. The experiment explored whether an ASL pronoun activates both its antecedent referent and the location associated with that referent. An introductory discourse associated a referent (e.g, MOTHER) with two distinct locations (eg., STOREleft, KITCHENright), and a continuation sentence followed that either contained a pronoun referring to the referent in one location or contained no anaphora (the control sentence). Twenty-four deaf participants made lexical decisions to probe signs presented during the continuation sentences. The probe signs were either the referent of the pronoun, the referent-location determined by the pronoun, or the most recently mentioned location (not referenced by the pronoun). The results indicated that response times to referent nouns were faster in the pronoun than in the no-pronoun control condition and that response times to the location signs did not differ across conditions. Thus, the spatial nature of coreference in ASL does not alter the processing mechanism underlying the on-line interpretation of pronouns. Pronouns activate only referent nouns, not spatial location nouns associated with the referent.     

Visual field differences in spatial frequency discrimination

Subjects discriminated between sine-wave gratings that differed by either +/-0.125 octaves (small difference) or +/-1.0 octaves (large difference). Baseline stimuli consisted of either 1.0 or 4.0 cycles per degree gratings. A left visual field advantage was obtained for the small difference in frequency, with no visual field advantages for the large difference in frequency. Similarly, moderate support for right versus left visual field advantages in processing high versus low spatial frequencies was found, although these interactions were not statistically significant. The results are discussed in light of Kosslyn's (1987) categorical and coordinate framework.     

Object-goal positioning influences spatial representation in rats

Three tests investigated how the geometric relation between object/landmarks and goals influenced spatial choice behavior in rats. Two groups searched for hidden food in an object-filled circular arena containing 24 small poles. For the “Proximal” group, four distinct objects in a square configuration were placed close to four baited poles. For the “Distal” group, the identical configuration of objects was rotated 45° relative to the poles containing the hidden food. The Proximal group learned to locate the baited poles more quickly than the Distal group. Tests with removed and rearranged landmarks indicated that the two groups learned to use the objects differently. The results suggested that close proximity of objects to goals encouraged their use as beacons, while greater distance of objects from goals resulted in the global encoding of the geometric properties of the arena and the use of the objects as landmarks. Received: 22 June 1998 / Accepted after revision: 23 January 1999