评执行功能的问题解决理论

对执行功能的定义存在着多种理论观点,但由于执行功能的含义广泛,该领域仍缺乏一个统一明确的定义。鉴于已有的各种理论的不足,该文着重介绍了Zelazo等人提出的研究执行功能的新思路：根据问题解决的理论框架来构建执行功能的概念,从而把执行功能的不同方面就其功能暂时整合在一个统一的框架中。根据这个问题解决的框架,执行功能是一个由问题解决的四个阶段组成的宏观概念：问题表征、计划、执行、评价。这种观点承认执行功能内在的复杂性和层次性,并引导我们深入地研究各亚功能之间的相互作用,有助于我们将该领域内各种不同的研究结果整合起来;但这种理论本身也存在值得商榷的地方,不能毫无批判地接受。     

不同类别学习方式的对比研究

55名被试被随机分配到两个组,分别通过分类学习与推理学习来学习两个类别,之后,两组被试对新的测试项目进行典型性评定,考察类别学习方式对类别表征的影响。研究结果表明,分类学习者仅仅依据项目的诊断性程度来评定,而推理学习者主要依据项目的典型性程度来评定。所以,诊断性信息在分类学习者的类别表征中占有重要位置,典型性信息在推理学习者的类别表征中占有重要位置,即分类学习与推理学习导致的类别表征不同。     

反馈相关ERP成分的参照点效应

采用投注—反馈金钱赌博任务具体操作了在结果评价中被试可能采用的参照点,试图进一步探究大脑监控系统是如何对事件的好、坏以及好坏程度进行评定的。实验结果表明,不管是Feedback-related negativity (FRN)还是P300,和赌注相差较小的中间三种反馈诱发的波幅差异不显著,和赌注相差较大的两边两种反馈诱发的波幅和中间三种反馈差异显著。该结果说明,反馈相关ERP成分不是反映了对绝对信息的加工,而是反映了以赌注所在的区间为参照点的相对信息的加工。研究进一步从不同侧面表明FRN所代表的效价评价的参照点效应,同时首次从神经机制上揭示了P300所代表的数量加工的参照点效应     

西方政治伦理思想的历史流变及其启示

自古至今,西哲们紧跟时代的脚步,不断把西方的政治伦理观推陈出新:美德政治伦理、神性政治伦理、非道德主义的政治伦理、权利政治伦理。全面、系统地梳理和展现西方政治伦理思想的演变及其价值诉求,对于理解和把握政治伦理学中的一些重要理论问题具有重大的启迪意义。     

Validity of measures of cognitive processes and general ability for learning and performance on highly complex computerized tutors: is the g factor of intelligence even more general?

Theoretical arguments and analyses from 2 studies provide compelling evidence that computerized measures of information-processing skills and abilities are highly useful supplements to more traditional, paper-based measures of general mental ability for predicting individuals' capacity to learn from and perform on highly challenging, multifaceted tutors. These tutors were designed to emulate learning and performance in complex, real-world settings. Hierarchical confirmatory factor analysis provided evidence that a general, higher order factor model with general ability at the apex could quite adequately and singularly account for the individual-differences data, both traditional and cognitive-process measures. Results are interpreted in light of the utility and generality of human cognitive abilities.     

Motivated cultural cognition: the impact of implicit cultural theories on dispositional attribution varies as a function of need for closure

The authors propose that need for closure (NFC) leads attributors to respond to an ambiguous social event by increasing reliance on implicit theories received from acculturation. Hence, the influence of NFC should be shaped by chronically accessible knowledge structures in a culture, and, likewise, the influence of culture should be moderated by epistemic motives such as NFC. The specific hypotheses drew on past findings that North American and Chinese attributors possess differing implicit social theories, North Americans conceiving of individuals as autonomous agents and Chinese conceiving of groups as autonomous. The present studies found the predicted pattern that among North American participants, NFC increased attributions to personal but not group dispositions. Among Chinese participants, NFC increased attributions to group but not personal dispositions. The findings are discussed in light of an emerging dynamic account of culture and cognition.     

关于幼儿对损人行为的道德判断及有关情绪预期的初步研究

以幼儿易于理解的有关享用财物的小故事,对４、５、６岁儿童作个别随访,综合考察其已获得的道德知识和道德认知的特点,以及相关情绪预期的情况。结果表明：１．幼儿已经获得了有关社会道德的最初步的知识,并能运用这些日常概念水平的知识对行为作道德判断,其道德认知已出现关心他人利益的成分,自我中心主义不突出;２．幼儿假设自己作为损人者的情绪预期与对故事中损人者的情绪预期之间存在明显差异,道德认知与道德情感脱节的现象在前者未有明显表现,却在后者中显现出来。     

恶性肿瘤动物模型的建立

建立恶性肿瘤动物模型是医学科研工作者重要的研究手段。恶性肿瘤的自发肿瘤模型,诱发肿瘤模型和移植肿瘤模型有着各自的机体与外界施加因素之间对立平衡,对界因素逐渐同体所转化和接纳,最终导致肿瘤形成,同时机体也荷瘤。因此,任何影响动物和施加固的条件均可促进和减弱肿瘤形成的起始,进展,结局。就三种恶性肿瘤动物模型建立过程中启示呈现出来,并对不同模型特点和选择进行评述。     

Symbolic forms can be mnemonics for recall

Form symbolism using squares and circles can aid recall. In Experiment 1, subjects saw 20 words, each presented in a circle or a square. Words like SOFT and MOTHER were presented in circles in the “congruent” condition, whereas the same words were presented in squares in the “incongruent” condition. Two experiments revealed that words in the congruent condition were more likely to be recalled. A comparison of the conditions with a baseline condition, in which 20 listed words were not closely related to either of the shapes, suggests that the effect was more likely due to facilitation produced by the congruent condition than to inhibition from the incongruent condition.     

指向具体人物对象的人际信任:跨文化比较及其认知模型

本文对指向具体人物对象的人际信任作了跨文化实证比较研究,并探讨了人际信任的认知模型。使用人际信任行为量表(ITBS)测量了中国、香港及美国三地大学生的人际信任。根据三组被试对诸如父亲、哥哥、同班同学、医生和陌生人等20个人们生活中经常能够接触的人物信任程度的高低,可将这些具体人物对象归为“亲人”,“熟人”和“陌生人”三个群体。三组被试对“亲人”群体的人际信任没有显著差异,但中国被试对其它两个人物对象群体的信任要高于美国和香港被试,而后两组被试的差别则不显著。另外,利用多元回归法在人际信任与六种认知变量间建立了模型关系,发现其中只有两个变量对模型作出主要贡献,即:(1)对由信任行为而得到得回报的期望值越高;(2)得不到回报而引致损害的严重性评估越低,则一个人作出某一信任行为的可能性就越大。被试的文化背景和社会工业化程度对人际信任认知模型没有影响。