Why Friedman's non-monotonic reasoning defies Hempel's covering law model

In this paper we will show that Hempel's covering law model can't deal very well with explanations that are based on incomplete knowledge. In particular the symmetry thesis, which is an important aspect of the covering law model, turns out to be problematic for these explanations. We will discuss an example of an electric circuit, which clearly indicates that the symmetry of explanation and prediction does not always hold. It will be argued that an alternative logic for causal explanation is needed. And we will investigate to what extent non-monotonic epistemic logic can provide such an alternative logical framework. Finally we will show that our non-monotonic logical analysis of explanation is not only suitable for simple cases such as the electric circuit, but that it also sheds new light on more controversial causal explanations such as Milton Friedman's explanation of the business cycle.We gratefully acknowledge the helpful suggestions and critical comments of Johan van Benthem, Bert Hamminga, Kevin Hoover, Theo Kuipers, and Rick Looyen.     

在班集体影响下学生道德品质形成过程的心理学分析

这篇初步的研究报告有很值得重视的意义。所介绍的不仅是很可宝贵的教育工作经验,并同样是可以很富有成效的一种发展心理学和教育心理学研究方法,只是所作的心理学考察还可以更深入一些。这样的研究可以由教育工作者自己做,也可以由心理学工作者和教育工作者一起做。也可以在后者的协助之下进行。     

再论思维的可训练性

本文从思维的可逆性、思维过程的操作化和思维训练的实践效果等方面论证了思维的可训练性,提出了将思维的可逆性与思维的认知过程相结合而产生的可逆性思维过程理论。该理论认为,可逆性是思维的本质属性,思维过程因其可逆性而具有可训练性,思维训练本质上是在训练思维的可逆性。实践表明,可逆性思维过程可操作化为各种具体的思维训练项目,进而可编制适合普通儿童、学习困难儿童、轻度智力落后儿童等各类儿童的实用思维训练教程,运用这些教程开展的思维训练能够有效地促进各类儿童的智力（思维）发展。     

双语脑的研究:不同的语言是否有不同的皮层机制?

随着认知神经科学技术的发展,研究者对“不同语言是否有不同的大脑皮层机制?”这个问题的研究也进一步深入。一系列的神经心理学和脑成像研究表明,语言获得的时问、流利程度、获得方式等都可能成为影响语言的皮层机制的因素。     

政治的,抑或道德的——对政治自由主义一个关键悖论的解读

政治自由主义试图将其正义观念塑造为纯粹"政治的"观念,而不能是完备性的"道德的"观念。但任何规范性的正义观念似乎都不能不是道德的,这就形成了政治自由主义所面对的一个最根本的悖论。通过分析我们可以看到,政治自由主义要克服这一悖论,必须寻求一种具有自主性的规范性政治概念。此外,政治自由主义把公民的两种道德能力当作理论前提,同时强调道德化的公民美德,这两个因素都加深了这一悖论。通过解释和分析这两种因素所带来的理论难题及其原因,文章认为,"政治的"自由主义之所以难以抹去"道德的"面纱,其根源在于政治在自由主义价值系统中的处境。     

Turning a blind eye: Meritocracy moderates the impacts of social status on corruption perception

Findings on the effect of social status on corruption perception are mixed. To make sense of the mixed results, three studies were conducted to examine whether meritocracy moderates this effect. In Study 1, we measured all variables using a questionnaire-based correlational design. In the preregistered Study 2, we adopted an experimental design in which we manipulated social status using a false feedback paradigm and measured corruption perception and meritocracy. In Study 3, we manipulated meritocracy using a scrambled sentence task and measured its effect on the relationship between social status and corruption perception. The results consistently demonstrated that meritocracy could moderate the influence of social status on corruption perception. Specifically, social status was negatively associated with corruption perception when meritocracy was weak, whereas the association was not significant when meritocracy was strong. Our results suggest that meritocracy critically affects acknowledgment of the pervasiveness of social injustice and even deters the disadvantaged from fighting against corruption.     

Numerosity judgments for tactile stimuli distributed over the body surface

A large body of research now supports the claim that two different and dissociable processes are involved in making numerosity judgments regarding visual stimuli: subitising (fast and nearly errorless) for up to 4 stimuli, and counting (slow and error-prone) when more than 4 stimuli are presented. We studied tactile numerosity judgments for combinations of 1-7 vibrotactile stimuli presented simultaneously over the body surface. In experiment 1, the stimuli were presented once, while in experiment 2 conditions of single presentation and repeated presentation of the stimulus were compared. Neither experiment provided any evidence for a discontinuity in the slope of either the RT or error data suggesting that subitisation does not occur for tactile stimuli. By systematically varying the intensity of the vibrotactile stimuli in experiment 3, we were able to demonstrate that participants were not simply using the 'global intensity' of the whole tactile display to make their tactile numerosity judgments, but were, instead, using information concerning the number of tactors activated. The results of the three experiments reported here are discussed in relation to current theories of counting and subitising, and potential implications for the design of tactile user interfaces are highlighted.     

Proactive interference and cuing effects in short-term cued recall: Does foil context matter?

Tehan and Humphreys's (1995, 1996) short-term cued recall paradigm showed that recall in short-term memory is cue driven. In critical trials, the participants studied two blocks of four words each and were required to forget the first block while remembering the second block. A foil in the first block (e.g., orange) was related to a target (e.g., carrot) in the second block. Proactive interference (PI) was evident when a retrieval cue was used that subsumed the foil and the target (e.g., type of juice), but not when a cue was used that subsumed only the target (e.g., type of vegetable). Four experiments were performed to examine the extent to which contextual organization in the foil block would enhance or diminish the foil's efficacy in creating PI. A novel condition was included in which the words in the foil block were studied in a phonologically related context but the target was cued semantically, and vice versa with a semantic context and phonological cue. There were no differences in recall accuracy between conditions with and without contextual organization, but reliable increases in foil intrusions were observed when contextual organization was present. Contextual organization enhanced the foil, rather than diminished it, but the strengthened foil generated PI only when the cue subsumed the foil and the target and had no effect when the cue subsumed only the target. The results are consistent with a cue-driven retrieval interpretation of short-term recall.     

Interdependent self: self-perceptions of Vietnamese-American youths

This study examined how Vietnamese-American adolescents perceive themselves in relation to their families. Qualitative, criterion-based sampling and "snowball" or "chain sampling" strategies were used as well as in-depth interviews with 10 Vietnamese-American adolescents. The research focused on parental interactions, family climate, and parental control. The study also looked at peer relationships, parental input, and adolescents' academic achievement orientation. The adolescents described grow closer to, and more emotionally dependent upon, their parents over time. The parents see their children's education as an effective instrument of empowerment and liberation for the entire family, and as providing hope for the future.