信息外部表征形式对初中生学习决策框架效应的影响

333名初中生被分配到基于描述表征的两种条件下,分别对获得框架与损失框架下的风险回避类与风险寻求类学习时间选项进行抉择,以探讨信息外部表征对学习决策框架效应的影响.结果表明:1)在基于描述表征的条件下,学习决策领域中存在框架效应,但有其领域特殊性,被试在获得框架中无明显决策偏向,但在损失框架中的决策明显偏向风险寻求.2)在基于经验表征的条件下,学习决策不存在框架效应.无论是在获得框架还是损失框架中的学习决策均不存在明显的偏向.     

错误正波的神经发生源与功能意义解释

错误正波(error positivity, Pe)是指在错误反应后200~600ms后出现的事件相关电位(ERP)的正偏转, 对Pe的研究有助于揭示人类错误加工机制的全貌。现有研究表明Pe主要产生于前扣带回喙部, 但不同的研究对其精细神经发生源并没有达成一致。Pe的功能意义解释主要有错误意识假说、行为适应假说、情绪评估假说。当根据有关P3的理论来解释Pe的功能意义时, Pe可能反映了对错误背景的刷新。然而上述每一种对Pe的功能意义的解释都还受到了一些研究结果的质疑和挑战。基于此, 作者对现有研究存在的问题进行了总结和分析, 并对今后如何对Pe的神经发生源和功能意义的进一步研究提出了建议。     

自我-他人决策差异：问题、研究与思考

目前关于自我-他人决策差异的研究在采用的任务、得到的发现及理论解释上均存在诸多矛盾或不一致的地方, 且缺乏对此种现象深层心理机制的探讨。虽然一些研究者试图用心理距离假设来解释相关结果, 但由于对心理距离的实验操纵过于简单, 难以形成解释力较强的理论模型。近年来我们的一系列研究发现：得失情境下自我-他人决策差异存在不对称性; 直接操纵心理距离比操纵决策者角色和社会距离对诱发自我-他人决策差异更有效; 决策者个体的自尊水平影响自我-他人决策差异。未来的研究需要进一步探讨自我-他人心理距离的本质、决策者角色转换引起的心理距离变化及自我-他人决策差异的脑机制等问题。     

情绪图片的效价与唤醒度在注意瞬脱对抗效应中的作用:来自ERP的证据

以情绪图片为材料,在RSVP任务下检验了效价和唤醒度在注意瞬脱对抗效应中的作用。实验发现效价在对抗注意瞬脱中起主要作用,且正性图片的对抗效应优于负性图片,但唤醒度对注意瞬脱的影响不显著,结果支持积极情绪对抗注意瞬脱的观点。ERP结果进一步发现以上效应发生在P3代表的工作记忆巩固阶段。而在P2和N2代表的早期注意阶段,尽管已出现了注意瞬脱和情绪加工,但二者无显著交互作用。     

相似和相同语言标签对幼儿归纳推理的影响

为进一步检验相似语言标签的效应,采用经典的三角属性归纳范式,通过两个实验研究了"相似/相同"的真实语言标签对4岁幼儿归纳推理的影响.在实验一中,三角范式中的三个刺激物属于同一类别,在实验二中,三个刺激物属于两种不同的类别.每个实验均有三种条件:在控制条件中,实验者用"这个"指代每个客体;在相似语言标签条件中,靶刺激与知觉不相似的比较刺激具有相同的、且暗示了类别成员关系的词素(例如,翠鸟—飞机—鸵鸟);在相同语言标签条件中,靶刺激和知觉不相似的比较刺激共享相同的语言标签(例如,鸟—飞机—鸟).结果一致显示,与控制条件相比,幼儿在相似语言标签条件下表现出了更多的基于概念的归纳,表明在真实语言标签条件下也存在相似语言标签效应.同时,研究结果也显示,幼儿在相似和相同语言标签条件下的归纳没有显著差异,说明语言标签在幼儿归纳中更可能传递了概念信息,从而挑战了Sloutsky等的理论.     

动机冲突下2~4岁幼儿反事实思维理解的发展

采用故事法, 考察在3种动机冲突下幼儿反事实思维理解的发展。结果表明：(1) 2岁幼儿的加法、减法反事实思维得分显著高于替代反事实思维。(2)在加法反事实任务中, 2岁幼儿显著低于4岁幼儿;在减法反事实任务中, 3个年龄组得分有显著性差异。(3)在趋避冲突下, 加法与减法反事实得分都显著高于替代反事实。(4)在结果反事实理解任务中, 随着年龄增长, 幼儿结果反事实思维理解能力有显著提高。     

Mislocalization of a target toward subjective contours: attentional modulation of location signals

This study examined whether a briefly presented target was mislocalized toward a subjective contour. Observers manually reproduced the position of a briefly presented peripheral target circle above a central fixation cross. A luminance contour, a subjective contour, or a no-contour stimulus was presented in either the left of right visual field, and a no-contour control was presented in the opposite visual field. After these stimuli vanished, a target circle was then presented. Consequently, the degree of mislocalization toward the subjective and luminance contours was the same; this indicated that image integration at a coarse spatial scale cannot explain mislocalization. Experiment 2 revealed that the mislocalization in Experiment 1 was not a result of eye movements. Experiment 3 found that the spatial attention allocated at the location of the luminance and subjective contours was more than that allocated at the no-contour stimulus. An attentional shift toward the task-irrelevant stimulus resulted in a mislocalization of the target.     

Logical dynamics of some speech acts that affect obligations and preferences

In this paper, illocutionary acts of commanding will be differentiated from perlocutionary acts that affect preferences of addressees in a new dynamic logic which combines the preference upgrade introduced in DEUL (dynamic epistemic upgrade logic) by van Benthem and Liu with the deontic update introduced in ECL II (eliminative command logic II) by Yamada. The resulting logic will incorporate J. L. Austin’s distinction between illocutionary acts as acts having mere conventional effects and perlocutionary acts as acts having real effects upon attitudes and actions of agents, and help us understand why saying so can make it so in explicit performative utterances. We will also discuss how acts of commanding give rise to so-called “deontic dilemmas” and how we can accommodate most deontic dilemmas without triggering so-called “deontic explosion”.     

文本加工中情境模型建构的五个维度

情境模型理论是当代西方文本阅读加工的一个重要理论。该文通过详细介绍情境模型建构的空间、时间、因果、主人公、意图五大维度,以助于对情境模型理论整体理解。通过总结可知,目前国内外关于情境模型建构中的空间、因果和主人公三个维度的研究成果较多,研究范式也较为成熟,时间和意图维度则研究成果较少     

A hierarchical approach for fitting curves to response time measurements

Understanding how response time (RT) changes with manipulations has been critical in distinguishing among theories in cognition. It is well known that aggregating data distorts functional relationships (e.g., Estes, 1956). Less well appreciated is a second pitfall: Minimizing squared errors (i.e., OLS regression) also distorts estimated functional forms with RT data. We discuss three properties of RT that should be modeled for accurate analysis and, on the basis of these three properties, provide a hierarchical Weibull regression model for regressing RT onto covariates. Hierarchical regression model analysis of lexical decision task data reveals that RT decreases as a power function of word frequency with the scale of RT decreasing 11% for every doubling of word frequency. A detailed discussion of the model and analysis techniques are presented as archived materials and may be downloaded from www.psychonomic.org/archive.