不同教师群体激励因素的比较研究

本研究选择云南曲靖和浙江宁波的两所师范学校作为研究对象,以教育人种学研究方法为基本方法,通过现象分析、个案访谈、问卷调查、文献分析等途径,对不同地区教师群体的工作积极性状态及其原因进行了实证性对比研究,得出以下结论:竞争压力和相对报酬之间的相互关系是决定不同教师群体工作积极性大小的两个关键因素。其中竞争因素的激励功能相对较强。竞争压力大小与相对报酬高低之间的相互关系影响着群体激励力量的大小。     

似然性、必然性和恒等:一种相对似然性逻辑

We construct a Hilbert style system RPL for the notion of plausibility measure introduced by Halpern J, and we prove the soundness and completeness with respect to a neighborhood style semantics. Using the language of RPL, we demonstrate that it can define well-studied notions of necessity, conditionals and propositional identity. The paper is partially supported by a project (No. 05JJD720. 40001) granted by the Key Research Institutes for Humanities and Social Sciences of Chinese Ministry of Education.     

Do consumers ever learn? Analysis of segment behavior in experimental markets

Economists argue that, despite cognitive limitations, economic agents arrive at optimal choice rules by learning. The assumption is that consumers, for example, are adaptively rational. Adaptive rationality raises a host of issues. We address three of these in the context of experimental markets: do consumers differ on the basis of learning; how do these differences, when aggregated, affect market efficiency; and how do consumers learn? Analysis of our experimental data reveals the following. First, multiple segments of consumers exist on the basis of learning. Second, the largest segment consists of subjects who do not learn despite timely feedback and motivation. Third, although some consumers do learn to make optimal choices, the effect of this segment on market efficiency is cancelled by an equal number of subjects who ‘learn' false relations. Finally, although subjects do not learn strict rationality even with experience, they are in the aggregate not so irrational as to allow highly suboptimal brands to survive. Further analysis of how consumers learn, specifically on the cues (signals) and the rules consumers employ in making choices over time leads to the following two conclusions. First, some signals make learning more easy than others: for example, providing market share information improves learning but not as much as providing quality information does. Second, people employ different rules depending upon the type of information they have. For example, consumers making decisions based only on price information are more likely to use a heuristic like ‘buy a medium‐priced product provided it has not failed in the past'. Consumers making decisions based on price and quality information may employ a heuristic such as ‘buy top quality products regardless of price'. We discuss the implications of these findings for theory and practice. Copyright © 2000 John Wiley & Sons, Ltd.     

Old Foundations for the Logic of Agency and Action

The paper presents an infinite hierarchy of sound and complete axiomatic systems for Two-Dimensional Modal Tense Logic with Historical Necessity, Agents and Acts. A main novelty of these logics is their capacity to represent formally (i) basic action-sentences asserting that such and such an act is performed/omitted by an agent, as well as (ii) causative action-sentences asserting that by performing/omitting a certain act, an agent causes that such and such a state-of-affairs is realized (e.g. comes about/ceases/remains/remains absent). We illustrate how the formal machinery of our systems can be used to reconstruct a number of interesting ideas in the Logic of Agency and Action that have been proposed by authors like von Wright, von Kutschera, Belnap and Segerberg.     

On the minimal relative motion principle—the oscillating tilted bar

Beghi, Xausa, Tomat, and Zanforlin (J. Math. Psychol. 41(1997) 11) present a visual stereokinetic illusion. In the image plane, one end of an oblique bar moves horizontally back and forth, while the other end is stationary. Perceptually, this becomes a bar of a constant length rotating in depth around a vertical axis that passes through the stationary end of the bar. Beghi et al. (1997) provide a mathematical model of minimal relative motion to account for this percept. Here we show that the minimal relative motion principle cannot explain the perceptual phenomenon. Specifically, we raise two objections. (1) It is necessary to consider not only the length, but also the direction, of a vector when comparing vector fields. In fact, when directions are taken into consideration, Beghi et al.'s mathematical result diverges from their perceptual experimental result. (2) There is a mathematical inconsistency in Beghi et al. (1997): mixing absolute and relative velocities in their minimization is unwarranted, and does not lead to correct minimization.     

RSVP显示方式下影响中文阅读效果的主要因素

通过二个实验考察了在采用快速序列视觉呈现（RSVP）显示方式时．影响中文阅读效果的二个主要因素,即每次同时呈现的字数和人为的词切分。结果表明．在RSVP显示方式下．中文的阅读理解正确率不受每次同时显示的字数多少或人为词切分的影响,而阅读速度和阅读效率则随每次同时呈现的字数的增加而相应提高;词切分条件下的阅读速度和效率略低于与其字数相当的固定字数显示方式下的阅读速度和效率。     

Modified biserial correlation coefficients

Asymptotic distribution theory of Brogden's form of biserial correlation coefficient is derived and large sample estimates of its standard error obtained. Its efficiency relative to the biserial correlation coefficient is examined. Other modifications of the statistic are evaluated, and on the basis of these results, recommendations for choice of estimator of biserial correlation are presented.Supported by the National Institute of Mental Health Specialized Research Center Grant #MH-30854 and by the National Institute of Mental Health Grant #MH-11028.     

Effects of an Auditory Model on the Learning of Relative and Absolute Timing

The effects of an auditory model on the learning of relative and absolute timing were examined. In 2 experiments, participants attempted to learn to produce a 1,000- or 1,600-ms sequence of 5 key presses with a specific relative-timing pattern. In each experiment, participants were, or were not, provided an auditory model that consisted of a series of tones that were temporally spaced according to the criterion relative-timing pattern. In Experiment 1, participants (n = 14) given the auditory template exhibited better relative- and absolute-timing performance than participants (n = 14) not given the auditory template. In Experiment 2, auditory and no-auditory template groups again were tested, but in that experiment each physical practice participant (n = 16) was paired during acquisition with an observer (n = 16). The observer was privy to all instructions as well as auditory and visual information that was provided the physical practice participant. The results replicated the results of Experiment 1: Relative-timing information was enhanced by the auditory template for both the physical and observation practice participants. Absolute timing was improved only when the auditory model was coupled with physical practice. Consistent with the proposal of D. M. Scully and K. M. Newell (1985), modeled timing information in physical and observational practice benefited the learning of the relative-timing features of the task, but physical practice was required to enhance absolute timing.     

Quadratic prediction of factor scores

Factor scores are naturally predicted by means of their conditional expectation given the indicatorsy. Under normality this expectation is linear iny but in general it is an unknown function ofy. It is discussed that under nonnormality factor scores can be more precisely predicted by a quadratic function ofy.The authors would like to thank Edith Nijenhuis, the anonymous referees, and the associate editor for their helpful comments and suggestions.     

主、宾关系从句加工不对称性效应及其神经机制

句子加工领域内, 主、宾关系从句加工不对称性效应是诸多语种内普遍存在的一种语言现象。本文对主、宾关系从句加工不对称性效应从如下几个方面进行了分析和论述：①从成人语言、儿童语言和失语症患者三个领域并结合印欧语系和非印欧语系的语言特征, 详细分析了该效应及其普遍性和特殊性; ②主、宾关系从句加工不对称性效应的理论解释：句法角色理论、“填充语-空位”依附理论、积极填充策略、名词短语可及性层级理论和干扰相似性理论; ③与主、宾关系从句加工不对称性效应有关的脑电成分及相应的脑区激活模式的分析。最后, 在对已有理论评价分析的基础上, 提出“标记浮动”句子加工理论模型, 并指出该领域未来的研究方向。