60年来关于发现“新行星木王星”的论战

从1945年起一直到现在,一场延续不断的关于发现"新行星木王星"的论战是我国现代科学史上引人注意的一件重大事件。这事件从抗战时期的重庆、昆明直到21世纪的北京,断断续续,没完没了。已经经过科学论证过了的问题,一遇机会就又沉渣泛起,混淆是非,欺骗大众。     

In search of the ‘Aha!’ experience: Elucidating the emotionality of insight problem‐solving

Although the experience of insight has long been noted, the essence of the ‘Aha!’ experience, reflecting a sudden change in the brain that accompanies an insight solution, remains largely unknown. This work aimed to uncover the mystery of the ‘Aha!’ experience through three studies. In Study 1, participants were required to solve a set of verbal insight problems and then subjectively report their affective experience when solving the problem. The participants were found to have experienced many types of emotions, with happiness the most frequently reported one. Multidimensional scaling was employed in Study 2 to simplify the dimensions of these reported emotions. The results showed that these different types of emotions could be clearly placed in two‐dimensional space and that components constituting the ‘Aha!’ experience mainly reflected positive emotion and approached cognition. To validate previous findings, in Study 3, participants were asked to select the most appropriate emotional item describing their feelings at the time the problem was solved. The results of this study replicated the multidimensional construct consisting of approached cognition and positive affect. These three studies provide the first direct evidence of the essence of the ‘Aha!’ experience. The potential significance of the findings was discussed.     

Predicting Short‐Term Remembering as Boundedly Optimal Strategy Choice

It is known that, on average, people adapt their choice of memory strategy to the subjective utility of interaction. What is not known is whether an individual's choices are boundedly optimal. Two experiments are reported that test the hypothesis that an individual's decisions about the distribution of remembering between internal and external resources are boundedly optimal where optimality is defined relative to experience, cognitive constraints, and reward. The theory makes predictions that are tested against data, not fitted to it. The experiments use a no‐choice/choice utility learning paradigm where the no‐choice phase is used to elicit a profile of each participant's performance across the strategy space and the choice phase is used to test predicted choices within this space. They show that the majority of individuals select strategies that are boundedly optimal. Further, individual differences in what people choose to do are successfully predicted by the analysis. Two issues are discussed: (a) the performance of the minority of participants who did not find boundedly optimal adaptations, and (b) the possibility that individuals anticipate what, with practice, will become a bounded optimal strategy, rather than what is boundedly optimal during training.     

论医学哲学的特征

医学哲学也称为医学辩证法,是在总结医学科学成就的基础上,通过对医学理论和实践中一般、普遍、共性问题的研究,揭示医学认识主体思维活动普遍规律的科学：是人们认识和处理健康和疾病问题的一般方法论。无论是与医学还是与哲学相比。医学哲学都有着显著的区别,运用对比分析的方法。对医学哲学的研究对象、理论体系特别是思维方式等不同方面的特征,进行理论探讨。     

Robust mean and covariance structure analysis through iteratively reweighted least squares

Robust schemes in regression are adapted to mean and covariance structure analysis, providing an iteratively reweighted least squares approach to robust structural equation modeling. Each case is properly weighted according to its distance, based on first and second order moments, from the structural model. A simple weighting function is adopted because of its flexibility with changing dimensions. The weight matrix is obtained from an adaptive way of using residuals. Test statistic and standard error estimators are given, based on iteratively reweighted least squares. The method reduces to a standard distribution-free methodology if all cases are equally weighted. Examples demonstrate the value of the robust procedure.The authors acknowledge the constructive comments of three referees and the Editor that lead to an improved version of the paper. This work was supported by National Institute on Drug Abuse Grants DA01070 and DA00017 and by the University of North Texas Faculty Research Grant Program.     

错认总比错过好——面孔视错觉的发生机制及其应用

面孔视错觉现象表现为个体从其他事物中感知到并不存在的面孔。面孔视错觉要素已广泛应用于艺术、广告及商品中,起到吸引注意、促进消费的作用。同时,先前的研究通过采用各种范式,发现患者在面孔视错觉的产生上同常人的差异,以及视错觉与视幻觉之间的联系。根据视觉加工通路的不同,相关范式可分为视错觉监测范式,以及视错觉辨认范式。前者侧重于基于提取的类面孔特征所做出的快速预测,后者侧重于主观期望引导个体对物体特征的提取,两者最终均会影响到后续的认知判断。日后研究可从面孔视错觉的发生机制出发,结合自上而下和自下而上两种加工通路,为面孔视错觉产生机制提供理论依据,并拓宽该要素在临床诊断及商业广告领域上的应用。     

语篇语境对句子理解的影响：来自N400的证据

N400作为语义违反的特异性ERP组分,其波幅反映了语义整合加工过程的难度,因此可将其作为研究语篇语境意义建构过程的一项重要指标。语篇语境可分为语言语境和非语言语境。前人一系列基于语篇水平的N400研究表明,从语义的角度上看,语言语境对句子理解具有制约和协调作用,其机制涉及词汇语义启动、场景适宜性、文字内容信息以及因果推理等方面;非语言语境对句子理解具有制约和补充作用,但其机制尚不明确。两种不同来源的语义信息在实时理解中是同时得到加工的     

论医疗行为中的“可容性危险”原则

对合法的医疗行为进行认定,分析医疗的局限性和社会认知差异,认为在医疗活动中,为谋求对疾病认识,应允许医疗活动带有危险性。对可容性危险原则进行法理分析,结合实际案例,分析医疗行为中的“可容性危险”原则的运用以及司法界对该原则的认知。     

行为评价对3岁儿童掌控动机的影响

运用情境实验法,考察了71名3岁儿童掌控动机的基本特点及行为评价对其影响。结果发现:3岁儿童:(1)对新奇玩具具有强烈的掌控动机;(2)丰富的视听反馈会更加激发其探索与操控;(3)当成人对其探索行为有积极评价时,儿童获得更多愉悦感;(4)掌控成败体验出现;(5)积极评价可增强掌控成功时的兴趣感,缓解失败后的不良情绪;(6)多数(94.42%)儿童愿意尝试挑战,并能坚持较长时间以期成功,但坚持性存在个体差异。     

法律运行道德追问的两重向度

将法律运行的道德追问规定为两重向度 ,既有其学理的依据 ,又是历史给予的启示和破解现实难题的需要。对立法的道德追问不仅要考察法之形式正义和实质正义 ,而且要审视法与社会主导道德以及与广大民众心理和情感相契合的状况。对司法的道德追问则不仅要关注司法是否公正以及司法工作者是否具有良好的职业道德素质 ,而且应特别关注当下我国社会全面转型时期司法之“应然”。