竞争与情绪对顿悟的原型启发效应的影响

以汉字字谜为材料, 采用“原型学习-问题测试”范式, 考察不同竞争水平(高、中、低竞争强度和无竞争)情境下诱发的情绪效价(积极、中性和消极)对顿悟中的原型启发的影响。结果发现：1)竞争水平对字谜问题解决中的原型启发有显著影响, 低强度竞争水平最有利于靶字谜问题的解决, 中等强度和高强度下效果次之, 无竞争条件下效果最差; 2)诱发情绪对靶字谜问题解决的原型启发也有显著影响, 消极情绪和中性情绪下比积极情绪下靶字谜的正确率更高; 3)有无竞争与情绪效价之间的交互作用显著, 体现了竞争和情绪这两种动力相关因素在原型启发中的动力作用不是独立的。     

本族效应的认知神经机制

本族效应是指个体对本族面孔比异族面孔有更好的再认的现象。本族面孔和异族面孔诱发的N170、P200、N200与“DM”效应存在显著差异, 这些脑电成分与本族效应的编码有关, 即对异族面孔编码不充分是本族效应产生的部分原因; “新旧”效应主要从提取角度解释本族效应, 认为提取异族面孔比本族面孔困难。与本族效应有关的主要脑区有梭状回、扣带回与杏仁核等。此外, 丰富的本族面孔知觉经验也会造成本族面孔的右半球优势比异族面孔大。未来研究除了要继续探讨本族效应的某些脑电成分、关注本族效应消失的神经机制以外, 从整合观点探讨本族效应的神经机制也是未来的研究方向。     

判断与决策中的证实性偏差

证实性偏差是指个体在决策时, 倾向于有意或无意地寻找支持已有信念、预期或假设的信息和解释, 忽视可能与之不一致的信息和解释。目前, 研究者主要从肯定检验策略、认知失调理论以及错误规避三个方面解释证实性偏差的心理机制。证实性偏差还受到条件性参考框架、任务的抽象性、个体经验以及认知闭合的需要等因素的影响。虽然证实性偏差不能完全消除, 但是可以通过竞争性假设分析法和考虑对立面的方法降低其程度。未来的研究可以从证实性偏差的产生根源、研究范式、群体决策中的证实性偏差以及拓展应用研究这四个方面进行探讨。     

“提取练习”促进意义学习：实验凭证与教学应用

“提取练习”对记忆保持的促进效应在过去10年获得了研究者的高度关注与认同。在此基础上, 研究者开始将提取练习研究的关注点由记忆保持转向对教学实践更具价值的意义学习上。本文从提取练习对意义材料学习的促进效应、提取练习在意义学习评估指标上的优势以及提取练习与其它意义学习方法的比较三个方面回顾了提取练习促进意义学习的实验证据, 介绍和比较了两种解释提取练习如何促进意义学习的理论假设, 并且梳理了在真实的课堂教学中获得的提取练习促进意义学习的研究成果。综述表明, 提取练习与重复学习和精细加工学习相比, 在促进意义学习方面更具优势, 值得且可以在教学实践中进行推广。但是, 现有研究中纳入的意义学习的评估指标体系、所涉及的知识类型以及与之比较的意义学习方法都较为单一, 且内部机制的解释理论也存在争议, 在以上方面还需要进行深入研究。     

Parameterization of connectionist models.

We present a method for estimating parameters of connectionist models that allows the model's output to fit as closely as possible to empirical data. The method minimizes a cost function that measures the difference between statistics computed from the model's output and statistics computed from the subjects' performance. An optimization algorithm finds the values of the parameters that minimize the value of this cost function. The cost function also indicates whether the model's statistics are significantly different from the data's. In some cases, the method can find the optimal parameters automatically. In others, the method may facilitate the manual search for optimal parameters. The method has been implemented in Matlab, is fully documented, and is available for free download from the Psychonomic Society Web archive at www.psychonomic.org/archive/.     

"EQ"在医学科研工作中的重要性

结合医学工作实际,讨论EQ(情商)的意义,医学工作者在开展科研工作过程中,能否做出成绩,能否成功均与其EQ之高低有密切关系,可以说情绪智商与情绪能力是制约医学工作者工作业绩的重要因素之一.基于上述认识,提醒医学工作者,在具备天生的IQ(智商)后,要注意对自己的EQ多加培养,以便在医学科研工作中能做出更大成绩.     

Components and Symbols of Ethnic Identity: A Case Study in Informal Education and Identity Formation in Diaspora

L’identité des membres de groupes ethniques qui vivent dans de nombreux pays est influencée par la culture environnante. Ce travail développe un outil qui peit aider les chercheurs à comprendre la façon dont les individus vivent leur identité ethnique. On analyse les composantes et les symboles qui fixent l’dentification ethnique. L’application de techniques d’analyse multidimentionnelle à un ensemble de données empiriques révéla une structure identitaire sur deux axes (cognitif–affectif; particulier–universel). Cette structure permet de faire des comparaisons entre des sous‐populations nationales selon leurs perceptions et accentuations diversifiées de l’identité ethnique. On examine ici les cas de membres de l’enseignement relevant de l’éducation juive informelle. 2119 de ces personnes provenant de sept pays ont fourni des définitions d’elles‐mêmes et des symboles qui exprimaient leur lien avec l’héritage ethnique et religieux. Cette typologie de base pourrait être utilisée dans des études portant sur d’autres groupes ethniques dont les membres ont émigré dans divers pays d’acceuil. The ethnic identity of members of ethnic groups who live in a number of different countries is influenced by the surrounding cultures. This study develops a tool which can help researchers understand the ways in which individuals perceive their own ethnic identity. The components and symbols that determine ethnic identification are analysed. By applying multidimensional analysis techniques to a set of empirical data, we were able to uncover a structure of identity along two axes: the cognitive/affective and the specific/universal. This structure enables us to make comparisons between national sub‐populations in terms of their various emphases and perceptions of ethnic identity. We examine here the case of staff members in Jewish informal educational settings: 2,119 staff members from seven countries were surveyed on the self‐definitions and symbols that express their relationship with their ethnic and religious heritage. This basic typology could be used in studies of other ethnic groups whose members have emigrated to a number of host countries.     

The effect of perceptual distinctiveness on the prospective and retrospective components of prospective memory in young and old adults.

In two experiments, the effect of perceptual distinctiveness of cues on prospective memory performance was examined. Young and older adults completed a visual search task with embedded prospective memory instructions. On each trial, participants were asked to indicate the position of a target letter in a letter string, unless either of two letters previously identified as prospective memory cues was presented. Each prospective cue was associated with a specific response. Perceptual distinctiveness was manipulated by spatially displacing a single letter. The prospective component (successful detection of the cue) and the retrospective memory component (recalling the correct response when a cue is detected) were measured separately. Perceptual displacement of cues modulated performance of the prospective component but not the retrospective component. Young adults successfully detected a larger proportion of cues (prospective component) than older adults. However, there were minimal effects of age and no effect of cue displacement on participants' ability to recall the intention once they detected a cue (retrospective component performance). Results are discussed within the context of current theoretical models of prospective memory.     

知情同意在我国临床医疗中的实施

知情同意在我国至少已倡导与实践了20年,由伦理要求上升到法律准则无疑是一个跨越式的进步。当前,医院落实知情同意的实践滞后于患者要求,除了主观方面的原因外,客观上存在知情同意与保护性医疗,病人自主权与医生处置权、医学对疾病的已知与未知等诸多盾与难点。要使知情同意在我国临床医疗中真正落实尚有许多工作要做;提高医务人员尊重病人权利的意识;完善执行知情同意的方式与程序;细化与知情同意的实施原则;营造良好的社会氛围,探索非西方环境下知情同意实现途径。