有限理性的"占优启发式"和"齐当别"决策模型的作为——当Allais悖论杠杆撬动了期望效用理论

人们在做决策时常常要受到时间或知识的限制,有时还要受到其双重限制。关于人们是如何进行风险决策,早期有期望效用理论对其加以解释,但Allais悖论对其标准化地位提出了挑战。Simon的“有限理性”观点提出后,一些研究者开始致力于开发决策的“有限理性”模型。文章讨论并比较了无限理性的期望效用理论被Allais悖论杠杆撬动之后,有限理性的“占优启发式”和“齐当别”决策模型所能做的和所不能做的。两种模型的决策标准、计算策略以及未来研究的展望也一并作了讨论。     

有限理性的“占优启发式”和“齐当别”决策模型的作为 ——当Allais悖论杠杆撬动了期望效用理论

人们在做决策时常常要受到时间或知识的限制,有时还要受到其双重限制。关于人们是如何进行风险决策,早期有期望效用理论对其加以解释,但Allais悖论对其标准化地位提出了挑战。Simon的“有限理性”观点提出后,一些研究者开始致力于开发决策的“有限理性”模型。文章讨论并比较了无限理性的期望效用理论被Allais悖论杠杆撬动之后,有限理性的“占优启发式”和“齐当别”决策模型所能做的和所不能做的。两种模型的决策标准、计算策略以及未来研究的展望也一并作了讨论     

数目和呈现方式对时距估计的影响

采用口头估计的方法,考察刺激的数目和呈现方式对时距估计的影响。以时距估计的平均值、准确性和变异性为指标,结果表明：（1）数目多少影响时距估计的平均值和准确性,数目少引起低估,数目多导致高估,数目多少与时距长度一致时,准确性高。（2）呈现方式影响时距估计的变异性,同时呈现时变异性最大;（3）数目和呈现方式的交互作用显著,固定频率和变化频率呈现时,数目影响时距估计。（4）随着时距的增加,时距估计的平均值由高估向低估,准确性由低向高发展。这表明时距和数目在心理表征上存在连接,数目和呈现方式在不同的时间范围内影响     

Neural correlates of infant action processing relate to theory of mind in early childhood

The mechanisms that support infant action processing are thought to be involved in the development of later social cognition. While a growing body of research demonstrates longitudinal links between action processing and explicit theory of mind (TOM), it remains unclear why this link emerges in some measures of action encoding and not others. In this paper, we recruit neural measures as a unique lens into which aspects of human infant action processing (i.e., action encoding and action execution; age 7 months) are related to preschool TOM (age 3 years; n = 31). We test whether individual differences in recruiting the sensorimotor system or attention processes during action encoding predict individual differences in TOM. Results indicate that reduced occipital alpha during action encoding predicts TOM at age 3. This finding converges with behavioral work and suggests that attentional processes involved in action encoding may support TOM. We also test whether neural processing during action execution draws on the proto‐substrates of effortful control (EC). Results indicate that frontal alpha oscillatory activity during action execution predicted EC at age 3—providing strong novel evidence that infant brain activity is longitudinally linked to EC. Further, we demonstrate that EC mediates the link between the frontal alpha response and TOM. This indirect effect is specific in terms of direction, neural response, and behavior. Together, these findings converge with behavioral research and demonstrate that domain general processes show strong links to early infant action processing and TOM.     

The biochemistry of memory: The 26year journey of a 'new and specific hypothesis'

This Special Issue of Neurobiology of Learning and Memory dedicated to Dr. Richard Thompson to celebrate his 80th birthday and his numerous contributions to the field of learning and memory gave us the opportunity to revisit the hypothesis we proposed more than 25years ago regarding the biochemistry of learning and memory. This review summarizes our early 1980s hypothesis and then describes how it was tested and modified over the years following its introduction. We then discuss the current status of the hypothesis and provide some examples of how it has led to unexpected insights into the memory problems that accompany a broad range of neuropsychiatric disorders.     

Chinese consumer ethnocentrism: A field experiment

Consumer ethnocentrism presents barriers for internationalising organisations. In China, evidence of a resurgent nationalism partly fuelled by rapid economic growth portends a shift in consumption away from foreign towards domestic products. On the other hand, rising consumer demand for branded and luxury products cannot be fully met domestically. However, much of the available evidence on Chinese consumer ethnocentrism is anecdotal and is based on attitudinal surveys that, as accurate measures of actual purchasing behaviour, suffer from certain methodological issues. In response, we report an experiment that measures the ethnocentrism of 447 Chinese consumers as their incentive‐compatible choices between foreign and domestic products in a field setting. Our findings show little effect of foreign origin on subjects' choices that were only weakly related with attitudinal measures including the commonly used consumer ethnocentric tendencies scale (CETSCALE). Our results question the existence of ethnocentric consumer behaviour in China and the use of CETSCALE to gauge it generally. Copyright © 2012 John Wiley & Sons, Ltd.     

中国文化中自信人格的内涵和功能

自信人格研究的旨趣是通过概念建构和实证研究,实现对自信心理状态与行为模式的刻画与理解。本文综述了最近国内人格心理学在语用、公众观层面对自信的关注,自信研究在人格心理学中的地位,自信在自我中的地位,并进一步归纳了自信人格的界定。文章还讨论了当前研究中所关注的自信的自我调控和心理健康功能。最后,针对当前自信人格结构研究和功能研究中的挑战,提出以自信结构探讨和机制整合来深入推进自信人格的研究     

小学儿童汉字阅读特点初探

该研究运用命名任务、通过两个实验探查了小学儿童汉字阅读的发展特点。实验一发现,小学7岁、8岁、9岁儿童在汉字阅读中受不同汉字结构类型的影响。在笔画数没有显著差异的情况下,独体字的阅读比合体字快,而合体字中上下结构和左右结构类型之间没有差异,而且独体字语音提取的优势从7岁儿童开始就具有了,这种优势稳定地发展下去。实验二在实验一的基础上进一步考察了7岁、9岁、11岁儿童汉字形声字阅读中声旁对整字发音的影响,结果发现,声旁与整字发音一致的形声字阅读快于声旁与整字发音不一致的形声字的阅读,这种汉字阅读中的规则效应从7岁儿童就出现了,而且,稳定地发展下去。     

阅读理解中汉语量词的眼动特点分析

采用眼动记录技术探讨被试阅读不同汉语量词的即时加工过程。考查名量词和动量词,以及名量词内部的差异。结果发现:(1)被试在阅读理解过程中对名量词和动量词的眼动特点存在显著差异,名量词获得更多的加工;(2)被试在阅读理解过程中对不同名量词的眼动特点也存在显著差异,个体量词比集合量词和临时量词获得更少的加工。由此可知,不同量词在阅读理解中的信息加工难度是不同的,对于篇章理解而言,其信息含量和信息的重要性也是不同的。     

5-HTTLPR、性别、家庭社会经济地位与面孔表情识别的关系

该研究采用531名中国汉族健康大学生为被试,综合考察了5-HTTLPR(5-羟色胺转运体基因连锁多态区)基因型、性别和家庭社会经济地位之间交互作用与面孔表情识别的关系。研究结果发现,性别和家庭社会经济地位在面孔表情识别上有显著的主效应。总体来说,家庭社会经济地位较高和女性的被试具有较好的面孔表情识别能力。5-HTTLPR基因型、性别、家庭社会经济地位,它们在面孔表情识别上的三因素交互作用也显著。该三因素交互作用主要是源于,在高家庭社会经济地位背景下,女性携带有5-HTTLPR长片段等位基因比短片段纯合子表现出稍差的面孔表情识别能力。该结果体现了基因与环境多因素交互作用对面孔表情识别能力的重要性。