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241.
The present experiment studied choice response context effects on the programming of response sequences using behavioural and electrophysiological methods. Participants were asked to produce responses differing in sequence length (1-key vs. 3-key responses) with either their left or right hand in a choice reaction time (RT) task. The choice response context was manipulated by a blocked or mixed execution of 1-key and 3-key responses. A sequence length effect on RT was observed in the blocked but not in the mixed condition. The time course of the lateralized readiness potential indicates a motoric locus of the sequence length effect, suggesting that the response hand is activated before the entire motor program is established.  相似文献   
242.
元代疫灾述论   总被引:1,自引:0,他引:1  
元代疫灾严重程度难以想象,为害甚重。据史实考察可以发现:元代疫灾虽是由自然界的破坏力及人与人之间社会关系失调共同作用而引发的,但作用主体是有变化的,且时段划分比较明显。疫灾的时间分布密集,空间分布也较为平衡。元政府在防疫方面也有许多积极举措。  相似文献   
243.
In Being and Time, Heidegger affirms that being-with or Mitsein is an essential constitution of Dasein but he does not submit this existential to the same rigorous analyses as other existentials. In this essay, Jean-Luc Nancy points to the different places where Heidegger erased the possibility of thinking an essential with that he himself opened. This erasure is due, according to Nancy, to the subordination of Mitsein to a thinking of the proper and the improper. The polarization of Being-with between an improper face, the Anyone, and a proper one, the people, which is also, as Nancy shows, a polarization between everydayness and historicity, between a being-together in exteriority (indifference and anonymity) and a being-together in interiority (union through destiny), between a solitary dying and the sacrificial death in combat, leaves the essential with unthought. This essay shows not only the tensions that arise out of Heidegger’s own analyses of Mitsein and affect the whole of Being and Time but also underlines in the end a “shortfall in thinking” inherent not only to Heidegger’s work but, as Nancy claims, to our Western tradition, a shortfall which Nancy has attempted to remedy in his Being Singular Plural. A slightly different version has been published under the title “L’être-avec de l’être-là” in Lieu-Dit 19 “Communauté” (Spring 2003). All additions in square brackets are the translators’ unless otherwise indicated. The German words in parentheses are Nancy’s additions. For the translation of citations from Being and Time, we have used the Macquarrie & Robinson’s translation which we have modified only when constrained by Nancy himself. Overall, we have tried to be faithful to the Heideggerian tone of Nancy’s text by using the accepted English translation of the central concepts of Being and Time. When we depart from the accepted translations, it is to remain true to Nancy’s paraphrases, emphases, and displacements. For example, we refrain from using “authentic” and “inauthentic.” Translated by Marie-Eve Morin Department of Philosophy, 4-97 Humanities Centre, University of Alberta, Edmonton, AB, Canada T6G 2E5 e-mail: mmorin1@ualberta.ca
  相似文献   
244.
In three experiments, a rat's lever presses could postpone timeouts from food pellets delivered on response-independent schedules. In Experiment 1, the pellets were delivered at variable-time (VT) rates ranging from VT 0.5 to VT 8 min. Experiment 2 replicated the VT 1 min and VT 8 min conditions of Experiment 1 with new subjects. Finally, subjects in Experiment 3 could postpone timeouts from delivery of pellets that differed in quality rather than quantity (unsweetened versus sweetened pellets). In general, response rates and success in avoiding increased as a function of the rate and quality of the pellets. Also, performance efficiency increased as the experiments progressed, that is, the avoidance response occurred later and later in the response-timeout interval. The results support the conclusion that timeout from reinforcement has functional properties similar to those of more commonly studied aversive stimuli (e.g., shock).  相似文献   
245.
对无保护左主干冠状动脉狭窄血运重建的临床决策   总被引:1,自引:0,他引:1  
对于无保护左主干(LMS)狭窄的冠状动脉疾病,冠状动脉旁路移植术(CABG)一直被认为是“标准治疗”,原因就是有充分的证据证明其具有远期生存率方面的益处。但是,目前却出现了越来越多的使用药物支架而不是CABG治疗左主干狭窄的趋势,尽管目前这方面的证据还不充分。在此,本文在汇总了经皮血运重建技术(PCI)干预无保护左主干、对比支架和外科手术治疗无保护左主干的随机对照研究资料的基础上,总结认为,对于适合外科手术的无保护左主干狭窄患者,CABG仍旧是血运重建的首选。  相似文献   
246.
未来取向应对的双阶段序列模型及其时间透视机制   总被引:2,自引:1,他引:1  
甘怡群 《心理科学进展》2011,19(11):1583-1587
最近的研究表明, 未来取向应对对于应激管理起着不可忽视的重要作用。但预先应对和预防应对的关系及其作用机制, 一直是困扰应对研究者的重要问题。我们的前期工作显示, 序列模型比平行模型能更好地表征预先应对和预防应对的内在关系, 时间透视比威胁知觉更能解释预防应对的前因。本项目首次以时间知觉和内隐态度为切入点, 探索未来取向应对机制的理论模型。研究内容拟包括:(1)以大学生就业为情境, 构建未来取向应对的双阶段序列模型; (2)以大学生入学适应为情境, 用内隐认知充实和验证未来取向应对的序列模型; (3)用时间折扣模型的任务范式, 探讨未来取向应对不同阶段的时间透视机制:(4)用威胁性和中性的阈下面孔作情绪启动, 验证未来取向应对不同阶段的时间透视机制。本研究为发掘预先应对和预防应对的关系及其内在机制, 及基于未来取向应对的干预在心理健康和教育领域的应用奠定了基础。  相似文献   
247.
This paper deals with optimal partitioning of limited testing time in order to achieve maximum total test score. Nonlinear optimization theory was used to analyze this problem. A general case using a generic item response model is first presented. A special case that applies a response time model proposed by Wang and Hanson (2005) is also presented. Theoretical properties of the optimal solution are derived. Their practical implications to optimal test-taking strategies are also discussed. The theoretical properties are in general agreement with the conventional advice to the examinees on pacing strategy.  相似文献   
248.
Temporal logic is one of the many areas in which a possible world semantics is adopted. Prior's Ockhamist and Peircean semantics for branching-time, though, depart from the genuine Kripke semantics in that they involve a quantification over histories, which is a second-order quantification over sets of possible worlds. In the paper, variants of the original Prior's semantics will be considered and it will be shown that all of them can be viewed as first-order counterparts of the original semantics.  相似文献   
249.
随着心理无意识研究在记忆、学习和思维等领域的兴起,内隐时间认知也逐步成为时间心理学中的一个研究热点。本文分析了探究内隐时间认知的四种方法:分离范式、序列学习范式、表征动量范式和计时分布相关范式,指出内隐时间认知实验范式在无意识时间人格与社会心理学中的研究也是有相当前景的。  相似文献   
250.
A balanced time perspective (BTP) is defined as a frequent and equal tendency to think positively about both one's past and future. A BTP is related to greater psychological well-being, such as life satisfaction and wisdom, and these BTP associations may vary cross-culturally, although few studies of BTP in non-Western countries exist. In order to advance cross-cultural comparisons of BTP, an important methodological step is to validate BTP measures in different cultures. This study aimed to develop and validate a Japanese version of the modified Balanced Time Perspective Scale (mBTPS). Japanese participants (N = 1,020, aged 18–79 years) completed the mBTPS-J, along with Japanese versions of the Zimbardo Time Perspective Inventory (ZTPI-J) and measures of well-being (life satisfaction and wisdom scales). Factor analysis of the mBTPS-J resulted in a 27-item mBTPS-J consisting of Past, Present, and Future subscales. Correlations between the relevant mBTPS-J and ZTPI-J subscales, and with the well-being measures, supported both convergent and predictive validity, respectively. The demonstrated psychometric strengths of the mBTPS-J will allow for specific testing of important cross-cultural questions.  相似文献   
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