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1.
Yi Lin 《Synthese》1989,79(3):473-488
In this paper, under the assumption that ZFC axiom system is consistent, the following are proved: (a) there is no system whose object set consists of all systems; (b) any system is not an object of itself; (c) any system is constructed with basic elements (elements which are not systems). Based on these results, the following problems in epistemology are discussed: the feasibility of the definition of the theory so-called science of science; the existence of basic particles in the world; and the existence of absolute truths.This paper was partially supported by Auburn University, presented atThe 20th Annual Spring Topology Conference, entitled The ZFC Axiom System and Problems in Epistemology.  相似文献   
2.
Dominant group members often are not aware of the privileges they benefit from due to their dominant group membership. Yet individuals are members of multiple groups and may simultaneously occupy multiple categories of dominance and marginality, raising the question of how different group memberships work in concert to facilitate or inhibit awareness of multiple forms of privilege. Examining awareness of privilege is important as awareness may be linked to action to dismantle systems of privilege that maintain oppression and inequality. Grounded in intersectional scholarship, in this study we examined how occupying intersecting categories of race/ethnicity, gender, and religion corresponded to an awareness of White, male, and Christian privilege. In a sample of 2321 Midwestern college students, we demonstrated that students from marginalized groups broadly reported greater awareness of all forms of privilege than students from dominant groups, and the difference between marginalized and dominant groups was most pronounced when the specific group category (e.g., gender) aligned with the type of privilege (e.g., male privilege). We also tested interactions among race/ethnicity, gender, and religion, only finding an interaction between race/ethnicity and religion for awareness of White and male privilege. These findings helped to clarify that multiple group memberships tended to contribute to awareness as multiple main effects rather than as multiplicative. Finally, we examined mean differences among the eight intersected groups to explore similarities and differences among groups in awareness of all types of privilege. Taken together, these findings quantitatively demonstrate the ways in which group memberships work together to contribute to awareness of multiple forms of privilege. We discuss study limitations and implications for community psychology research and practice.  相似文献   
3.
自闭症谱系障碍(Autism Spectrum Disorder, ASD)表现为社会交往困难以及重复刻板兴趣或行为。社交动机理论提出ASD个体是由于社交动机缺乏导致的社交障碍。目前该理论缺乏理论元素及结构关系的系统论证, 及基于此理论的低龄ASD儿童群体的研究证据。本研究拟采用心理实验法、眼动及近红外脑成像技术, 探索低龄ASD儿童早期社交奖赏、社交定向异常眼动标记及眶额叶脑区活动的神经机制。此外, 通过音乐奖赏强化学习的干预方式改善该理论的核心元素(社交奖赏), 观测能否改善ASD儿童的社交动机。本研究的开展有望对该理论进行系统验证, 并形成改善社交行为的潜在干预方案。  相似文献   
4.
跨期选择是对不同时间点的得失的权衡与选择。伊索寓言《蚂蚁和蚱蜢》假借群居型昆虫的跨期选择偏爱暗喻投资未来的慢策略比只顾眼前的快策略更利于生存。用跨期选择领域通用的语言解读这一寓言便是:选择大而迟选项的蚂蚁比选择小而早选项的蚱蜢更可能扛过严冬而生存下来。为了探索何种跨期选择策略更有助于我们扛过疫情,本研究调查了亚非欧美大洋洲这5大洲18个国家共计26355名受测者对混合得失双结果的跨期选择偏爱,测量了人们平时和疫时跨期选择偏爱的变易程度(2类变易的程度指标),以及人们自评的扛疫成效。跨文化比较结果的主要发现是:不同通货的选择变易程度(指标1)和不同时期的选择变易程度(指标2)能联合预测中国/新加坡文化圈国民的自评扛疫成效;不同时期的选择变易程度(指标2)也可以单独预测印度/马来西亚/菲律宾/尼日利亚文化圈国民的自评扛疫成效;这2类选择偏爱变易的程度指标不能预测其他文化圈国民的自评扛疫成效(或者预测方向和假设相反)。基于易经“穷则变,变则通”的要旨和跨国比较的发现,我们认为:面临历史危机时善于变通的特长抑或成就了中华民族特有的竞争优势;在应对危机时,与中国文化距离越相近的国家或民族抑或也能...  相似文献   
5.
Teacher stress and guidance work in Hong Kong secondary school teachers   总被引:2,自引:0,他引:2  
Major sources of stress in Hong Kong teachers were investigated, with specific reference to guidance work as a potential source of stress. A survey of 415 secondary school teachers revealed that guidance-related aspects of work constituted a major dimension of stress, with guidance teachers, female teachers, younger teachers and junior teachers perceiving more stress than their counterparts in this dimension. Workload and time pressure were perceived as the most stressful aspects of work for all teachers. Results also showed an association between stress and job satisfaction, and biographical variables. Implications of the findings for teachers doing guidance work in Hong Kong and internationally are discussed.  相似文献   
6.
Yi Xu 《Memory & cognition》1991,19(3):263-273
In testing the hypothesis that surface phonetic form is included in short-term memory (STM) representation, the tone sandhi phenomenon in Mandarin Chinese was exploited, and, as a prerequisite, the hypothesis that tonal similarity affects STM of verbal material in a tone language was also tested. In Experiment 1, subjects recalled visually presented sequences of seven monosyllabic Chinese morphemes having either the same tone or different tones. More errors were made on the monotonal sequences than on the multitonal sequences, confirming the effect of tonal similarity on STM. In Experiment 2, subjects recalled visually presented sequences of disyllabic nonsense words. The sequences were designed in such a way that half of them were subject to the tone sandhi rule in Mandarin Chinese, whereas the other half were not. The consequence of applying the tone sandhi rule, as designed, was to make all the first characters in the sequences identical in pronunciation, thus creating potential phonological confusion. More errors, indeed, occurred on the sequences subject to the tone sandhi rule than on those not subject to it, indicating the existence of a surface phonetic representation in STM. The findings in this study provide further insight into the phonological mechanism of STM. Different accounts for this mechanism are also discussed in the light of the new findings.  相似文献   
7.
厌恶是人和动物最基本的情绪之一,起源于口腔对苦味(有毒)物质的排斥,常伴有恶心呕吐和远离诱发刺激的强烈愿望,具有回避潜在疾病威胁的功能。大量动物和人类研究表明,催产素、孕激素和雌激素不同程度地影响核心厌恶刺激的感知、核心厌恶情绪的产生与表达、条件性厌恶习得和厌恶表情识别。三种激素主要通过作用于五羟色胺、γ-氨基丁酸、乙酰胆碱和谷氨酸等神经递质受体,调节杏仁核、脑岛、前扣带回、壳核、梨状皮层、额中回等脑区活动,影响厌恶加工。未来研究应当在准确测量激素水平和控制实验任务难度的基础上,探究各激素对不同感觉通道厌恶加工的影响,及其性别的调节作用;同时结合脑成像技术和动物行为学,明确各激素影响厌恶加工的神经内分泌机制。  相似文献   
8.
领导-部属交换的多维结构及对工作绩效和情境绩效的影响   总被引:14,自引:1,他引:14  
通过两项研究,对领导-部属交换的结构及其对员工的工作绩效和情境绩效进行了探讨。采用探索性因素分析、验证性因素分析、分层回归分析等方法对来自不同企业的员工及其主管的问卷调查结果进行了分析。 结果表明,领导-部属交换是一个多维度的结构,由情感、忠诚、贡献和专业尊敬四个维度组成。单维度的领导-部属交换和多维度的领导-部属交换都对员工的工作绩效和情境绩效具有预测作用,但多维度领导-部属交换的预测作用更强。  相似文献   
9.
领导-部属交换(LMX)的回顾与展望   总被引:8,自引:0,他引:8  
领导-部属交换理论从领导和部属的对偶关系中考察领导行为及其对下属的绩效、组织承诺等结果变量的影响。文章回顾了领导-部属交换的文献,对于它的概念、理论基础、结构、测量工具等进行了综合介绍,对不同测量工具的各自的特点以及它们之间的关系做了分析,接着总结了影响领导-部属关系的影响因素和结果变量以及与变革型领导的关系,最后提出未来研究应该加强从领导部属交换的发展阶段以及从部属或领导的角度来分析领导-部属交换理论  相似文献   
10.
汪涛  张琴  张辉  周玲  刘洪深 《心理学报》2012,44(6):841-852
以元认知和双系统模式的心理学理论为背景, 研究了分析式系统对来源国效应的削弱, 检验了产品信息呈现方式对来源国效应的调节作用。三个研究说明, 分析式系统的启动可以有效削弱来源国效应; 特定的产品信息呈现方式所引起的消费者信息处理不流畅性感知会激发消费者的元认知困难, 从而使他们在产品评价过程中主要依赖分析式系统, 达到削弱来源国效应的目的; 并不是所有能引起信息处理不流畅性的产品信息呈现方式都能削弱来源国效应, 过于复杂的呈现方式由于给消费者带来过多认知负荷, 反而不能成功启动分析系统, 从而无法削弱产品来源国形象对消费者产品评价的影响。  相似文献   
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