大小数量加工机制分离现象的ERP研究

大量行为研究表明,个体对4以上非符号数量的加工存在加工机制分离现象,但是相关的神经机制研究还很少。本研究选取21名大学生被试,结合ERP技术和数量判断任务,以数量比率效应为指标,比较4以上不同大小数量加工的神经反应模式。结果显示,大小数量加工条件下数量比率效应对P2p成分幅值的调节模式存在显著差异。这支持了小数量加工基于数量属性,大数量加工基于非数量属性的观点。     

纸质与视频补充材料对手术知情同意体验的影响：以腹腔镜胆囊切除手术为例

知情同意书在医患沟通中起着间接传递信息的重要作用。以159名大学生为被试,通过操纵不同的知情同意方式,考察了纸质或视频补充信息对患者知情同意满意度、理解程度以及患者信息需求的满足程度影响。结果发现,接受纸质补充知情同意或视频补充知情同意的被试对知情同意过程的满意度、对手术信息的理解程度与知情同意信息需求的满足程度显著高于接受普通知情同意的被试。同时,纸质补充知情同意使得“治疗信息需求的满足程度”最高。这表明,纸质补充知情同意更能满足患者对治疗信息的需求。     

Part‐set cueing effects in a diagnostic setting with professional auditors

The aim of this research is to examine the generality of the part‐set cueing effect, a well‐known memory‐inhibition phenomenon in basic research, to professional problem diagnosis. Three experiments were conducted. Experiment 1 examines whether part‐set cueing affects the ability of auditors to recall diagnoses, and if so, whether memory inhibition is affected by the plausibility of the hypotheses. Experiment 2 examines whether the part‐set cueing effect is sensitive to changes in the symptoms that drive the diagnosis and whether differences in inhibition occur because of prompt plausibility or because of target plausibility. Experiment 3 extends the findings of the first two experiments to hypothesis generation and discriminates between competing accounts for the part‐set cueing effect. The results show that part‐set cueing effects occur during hypothesis generation and that they are robust to changes in the symptoms. However, the results from the experiments reveal an asymmetric inhibition effect. Inhibition is significant when prompts contain low plausibility hypotheses that are also high in severity. When prompts consist of high plausibility or low severity hypotheses, no inhibition is observed. These findings are considered to be consistent with an editing account of the part‐set cueing phenomenon. The implications of these findings to problem diagnosis and decision aids are discussed. Copyright © 1999 John Wiley & Sons, Ltd.     

社会信息加工领域中的情境模型理论

自Wyer和Srull把情境模型理论引入社会信息加工领域以来,情境模型理论成了社会信息加工研究的热点,其自身结构和加工机制也得到研究者的不断完善。该文简要介绍了情境模型理论的内容、结构及其基本假设。即情境模型代表人们在社会信息加工过程中形成的关于具体事件和情节的知识,并且通常在社会信息的理解过程中自动建立。这种模式一旦建立,就为理解新信息及作出相应的判断提供基础。情境模型包括三种基本信息:时空框架、实体集合及实体之间的各种相互关系。认为人们在理解信息的过程中至少需要建构5个维度,即:(1)空间,(2)时间,(3)实体,(4)因果,(5)目的。在此基础上,文章讨论了情境模型理论的未来研究方向。     

正常人皮肤痛阈年周期节律的实验研究

痛觉以其巨大的生物学意义伴随着人类的种系进化和个体发育过程。人类自身对痛的体验有着长久的历史。可是,由于痛觉自身的特点和研究方法的困难,使得人们长期以来对痛觉的规律和本质缺乏深刻的认识。近年来神经生理学和神经化学为建立痛觉学说和探讨其机理做出了不少贡献。但是,痛觉做为一种心理过程,对它的某些特点和规律的     

中国人社会认知研究的沿革、趋势与理论建构

社会认知是指个体对社会性客体和社会现象及其关系的感知与理解。根据对象可以分为自我认知、人际认知、群际认知以及以社会决策为核心的社会事件认知。针对以上四个方面, 国内学者开展了一系列有益的探索, 为中国人社会认知的研究做出了先驱性贡献。但无论就理论建构、研究范式还是研究内容而言, 大量研究沿袭了国外研究的预设前提与范畴, 即“本位认知”, 脱离了中国人社会认知滋长的基础--以“差序格局”为基调的传统文化以及当前剧烈的社会变迁背景下转型期的文化。通过梳理与整合涉及社会认知主题的研究及其内在逻辑, 发现中国人社会认知的根本特点为“他位认知”, 并且集中体现为“差序格局”文化衍生与发展的“群际认知(阶层认知)”, 进而尝试围绕“群际认知”这条主线解读与建构中国人社会认知的理论框架, 推进中国人社会认知的深层研究, 具有深刻的理论与现实意义。     

幼儿特质推理发展的初步研究

本研究探究了幼儿以心理特质为中介,对心理状态做出推理的能力。结果表明,幼儿具有一定的以特质为基础的推理能力;随着年龄的增长,幼儿对以特质为基础的推理能力也在逐渐增强,但缺乏充分证据断定他们已经完全理解了心理特质。     

言语指导对实验操作技能形成影响的初步研究

本研究以112名中师学生为被试,采用实验组控制组后测实验设汁,选择中和滴定作为实验操作任务,探讨了言语指导对实验操作技能形成的影响。结果表明．言语指导能明显地促进学生实验操作技能的形成,特别是在实验操作动作的自动化方面。     

Small Change Makes a Big Splash: The Role of Working Self-Concept in the Effects of Stereotype Threat on Memory

Assuming that the principle of an active-self account holds true in real life, priming certain constructs could selectively activate a working self-concept, which in turn guides behavior. The current study involved two experiments that examined the relationships between stereotypic identity, working self-concept, and memory performance in older adults. Specifically, Study 1 tested whether a stereotype threat can affect older adults' working self-concept and memory performance. A modified Stroop color naming task and a separate recognition task showed that a stereotype threat prime altered the activation of the working self-concept and deteriorated the older adults' memory performance. Additionally, the working self-concept mediated the effect of stereotype threat on memory performance. Accordingly, we designed Study 2 to assess whether priming different identities can alter the working self-concept of the elderly and buffer the stereotype threat effect on memory performance. The results not only were the same as Study 1 but also revealed that activating multiple identities could mitigate the stereotype threat. These results support an active-self account and the efficacy of stereotype threat intervention. This intervention strategy may be able to be used in real situations to help the elderly alleviate stereotype threats and memory impairment.     

社会价值取向与反馈对动态社会两难决策的影响：以水资源两难决策为例

以水资源两难情景为实验任务,探讨了社会价值取向与反馈在社会两难决策中的作用.结果表明: (1)社会价值取向在决策者的两难决策行为中起着非常重要的作用.合作型个体比非合作型个体显著地表现出更多的合作行为.个体的社会价值取向可以作为预测两难决策行为的一个重要因素: (2)不同的反馈类型对具有不同社会价值取向的决策者的决策行为影响不同.非合作型个体受反馈信息影响比较明显,而合作型个体则不易受他人的决策信息影响.