知识表征的新观点--知觉符号理论

在认知科学中一个经典的争论是知识在人的头脑中是如何表征的。其中占主流的理论一直是命题符号理论,而最近Barsalou又提出了一种新的观点——知觉符号理论。本文对这一新理论做了介绍,阐述了它的主要特征,比较了它与命题符号理论的差异,并提供了现今对这一理论的实验证实。希望借此能启发国内的研究者也来关注和研究这一理论。     

幼儿说谎认知的年龄特征及其与心理理论水平的关系

研究探讨了3～4岁幼儿说谎认知的年龄特征,并在此基础上考察了说谎的概念理解水平与道德评价之问的关系,及说谎认知与心理理论水平的关系。结果表明：3岁和4岁幼儿在说谎和说真话概念的判断上年龄差异显著,在对说谎的道德评价上,年龄差异不显著;幼儿心理理论与说谎概念的相关显著,4岁组的心理理论与道德评价的相关显著。     

印象整饰与内隐态度效应

运用内隐联想测验对不同印象整饰水平个体的内隐态度进行了研究。结果表明：不同自我监控者的内隐性态度是存在的,高自我监控者的内隐态度和外显态度存在分离。研究对“印象整饰对强迫服从后态度改变的影响”的结果做出解释：自我监控者强迫服从后的态度中庸是其关注自身的公众形象而有意压抑和控制其内隐性的评价造成的。     

智障学生与正常学生内隐记忆与外显记忆的对比研究

本实验以探索智障学生与正常学生内隐记忆与外显记忆的发展特点为目的。采用2(材料类型:图片、汉语双字词)×2(贡献来源:外显记忆、内隐记忆)×2(被试类型:智障学生、正常学生)×2(年龄:低年级、高年级)的四因素混合设计,通过加工分离程序(PDP,process dissociation procedure)的包含和排除测验,计算意识和无意识的贡献大小。结果表明,⑴材料类型主效应极其显著;⑵贡献来源的主效应极其显著;⑶年龄效应不显著;⑷被试效应不显著;本研究结论可对智障学生的教育提供理论指导。     

驾驶经验和危险类型对驾驶员危险检测的影响

结合反应时和信号检测方法,考察不同危险类型下驾驶员危险检测的特点。35名新手和35名有经验驾驶员依次完成一个反应时测试和一个信号检测任务。结果发现：新手对明显和隐藏危险的反应时间比有经验驾驶员长。与隐藏危险相比,驾驶员对明显危险的敏感性高、判断标准低。驾驶员对两类危险的反应时间长是因为他们的判断标准严格。研究结果表明,驾驶员危险检测的特点随着危险类型不同而变化。     

青少年内隐与外显自尊的比较研究

运用两种程序分别测量了青少年的内隐自尊与外显自尊。内隐自尊由内隐联想测验测量,外显自尊由三项自尊量表测量。研究结果表明:在不同年龄阶段与不同性别的青少年中内隐自尊普遍存在;无论是内隐自尊还是外显自尊都不存在显著的性别差异;内隐自尊无显著的年龄差异;外显自尊存在显著的年龄差异,其中高中生比初中生和大学生有更低的外显自尊;内隐自尊与外显自尊之间无显著相关。     

A formal framework for characterizing querying algorithms

Algorithmic procedures have been devised for constructing a knowledge space by querying experts. The queries submitted to the expert consist of assertions that are to be accepted or rejected. The present paper provides a characterization of the algorithms that may be used to draw inferences from previously collected answers. It is based on the notion of a closure on the set of all assertions, and its extension to a set containing for each assertion a positive and a negative instance, representing acceptance and rejection, respectively. The developed characterization emphasizes the significance of the well-known QUERY and PS-QUERY procedures. Potential applications of the presented results in contexts other than knowledge space theory are pointed out.     

Computer Implication and the Curry Paradox

There are theoretical limitations to what can be implemented by a computer program. In this paper we are concerned with a limitation on the strength of computer implemented deduction. We use a version of the Curry paradox to arrive at this limitation.     

Misreading Islamist Terrorism: The "War Against Terrorism" and Just-War Theory

Abstract: The Bush administration's military war on terrorism is a blunt, ineffective, and unjust response to the threat posed to innocent civilians by terrorism. Decentralized terrorist networks can only be effectively fought by international cooperation among police and intelligence agencies representing diverse nation‐states, including ones with predominantly Islamic populations. The Bush administration's allegations of a global Islamist terrorist threat to the national interests of the United States misread the decentralized and complex nature of Islamist politics. Undoubtedly there exists a “combat fundamentalist” element within Islamism. But the threat posed to U.S. citizens by Islamist terrorism neither necessitates nor justifies as a response massive military invasions of other nations. Not only does the Bush administration's war on alleged “terrorist states” violate the doctrine of just war, but in addition these wars arise from a new, unilateral, imperial foreign‐policy doctrine of “preventive wars.” Such a doctrine will isolate the United States from international institutions and long‐standing allies. The weakening of these institutions and alliances will only weaken the ability of the international community to deter terrorism.