否定句理解中知觉仿真的动态过程

采用移动窗口阅读技术探讨否定句理解中被否定的情境和真实情境在头脑中的具体表征。实验材料包括否定句和图片,根据句子隐含形状与再认图片的匹配关系分为匹配和不匹配两个版本。实验1中句子呈现时间为700ms,结果发现匹配版本中图片再认时间明显短于不匹配版本,证实了否定句理解中被否定情境的知觉仿真。实验2中句子呈现时间延长到1000ms,结果两个版本图片再认时间没有差异,说明读者已经转为对否定句所表达的真实情境进行仿真。实验支持了知觉符号观并进一痔说明否常甸珈解中知带仿直和知慌符号瀚活是一个动杰的“两步击”的加工讨程。     

Cut-free common knowledge

Starting off from the infinitary system for common knowledge over multi-modal epistemic logic presented in [L. Alberucci, G. Jäger, About cut elimination for logics of common knowledge, Annals of Pure and Applied Logic 133 (2005) 73–99], we apply the finite model property to “finitize” this deductive system. The result is a cut-free, sound and complete sequent calculus for common knowledge.     

儿童运动认知的朴素理论

主要介绍了关于运动的朴素理论中儿童具有的两类知识系统,一是儿童在日常运动中能够描述出来的朴素信念即外显的概念知识,另一是儿童和运动的物体发生相互作用时所具有的知识即内隐的知识,并进一步阐述了内隐知觉知识和外显概念知识之间具有不可渗透性,内隐运动知识和外显概念知识存在着分离,内隐运动知识可以通过运动表象的方式转化为外显概念知识。提出了有待进一步探讨的问题：错误信念是否具有任务特殊性,内隐知觉知识和内隐运动知识之间关系等     

实践社区成员的自我效能感对知识传播过程和效果的影响

通过自编实践社区成员自我效能感问卷以及知识传播过程和效果问卷对宁夏、重庆两地200名企业实践社区成员进行测量,以研究自我效能感对知识传播过程及效果的影响。结果表明,问卷具有良好的信度和效度;自我效能感不同的实践社区成员在知识传播过程和效果方面存在显著的差异,可以利用自我效能感来预测实践社区知识传播的过程和效果。     

Option fixation: A cognitive contributor to overconfidence

The ASC model of choice and confidence in general knowledge proposes that respondents first Assess the familiarity of presented options, and then use the high-familiarity option as a retrieval cue to Search memory for the purposes of Constructing an explanation about why that high-familiarity option is true. The ASC process implies that overconfidence results in part from a tendency to fixate on the high-familiarity option, to the neglect of the other option. If this implication is true, then judgment tasks requiring respondents to evaluate each option independently should result in reduced overconfidence as compared with standard judgment tasks. Two experiments tested this implication, and found that confidence and overconfidence were reduced when respondents evaluated options independently. The findings support the proposal that option fixation contributes to overconfidence, and also clarify the limitations of random error explanations of overconfidence.     

Group cognition,membership change,and performance: Investigating the benefits and detriments of collective knowledge

This study analyzes the effects of group membership change on group cognition and performance to determine how groups can simultaneously leverage oldtimers’ collective knowledge and a newcomer’s expertise. Our analysis focuses specifically on the interrelated effects of the two components of a transactive memory system (TMS)—TMS structure and TMS processes—to explain the cognitive mechanisms through which membership change affects group performance. Results from a laboratory study show that groups that experience partial membership change tend to rely on the TMS structure that oldtimers developed in their original group, and that doing so is ultimately detrimental to performance because it creates inefficient TMS processes. Results from a supplemental study indicate that these TMS process inefficiencies can be avoided when oldtimers are instructed to reflect upon their collective knowledge prior to task execution. We discuss the implications for managing group cognition in organizations where membership change is prevalent.     

小学教师课堂信息加工能力的研究

研究采用小学语文和数学教学录像为实验材料,以98名小学语文数学教师、其他学科教师和非教师为研究对象,运用反应时测量法探讨小学教师加工不同类型课堂信息的速度和辨别能力。结果表明:有学科教学经验的教师(语文和数学教师)在重视学科教学内容的同时,也重视课堂教学活动的组织和课堂气氛的调节;学科知识、学科教学经验和课堂教学经验对教师的课堂信息加工能力和教学专长发展有显著的影响;研究结论对提高教师课堂教学能力、教学专长以及教师培训提供了有力的实验证据。     

辩证看待浸润性乳腺癌腋窝的局部处理

用辩证的观点,论述浸润性乳腺癌腋窝处理的不同方法以及所产生的不同的结果;阐述了临床上对浸润性乳腺癌腋窝处理时经常出现的问题;并阐明坚持从实际出发,采取科学的态度,正确处理浸润性乳腺癌腋窝的观点;肯定了微创手术是一场手术革命,是传统外科学发展的必然结果,它的变革符合事物的发展规律。     

Nonparametric item response theory axioms and properties under nonlinearity and their exemplification with knowledge space theory

This paper investigates the dichotomous Mokken nonparametric item response theory (IRT) axioms and properties under incomparabilities among latent trait values and items. Generalized equivalents of the unidimensional nonparametric IRT axioms and properties are formulated for nonlinear (quasi-ordered) person and indicator spaces. It is shown that monotone likelihood ratio (MLR) for the total score variable and nonlinear latent trait implies stochastic ordering (SO) of the total score variable, but may fail to imply SO of the nonlinear latent trait. The reason for this and conditions under which the implication holds are specified, based on a new, simpler proof of the fact that in the unidimensional case MLR implies SO. The approach is applied in knowledge space theory (KST), a combinatorial test theory. This leads to a (tentative) Mokken-type nonparametric axiomatization in the currently parametric theory of knowledge spaces. The nonparametric axiomatization is compared with the assumptions of the parametric basic local independence model which is fundamental in KST. It is concluded that this paper may provide a first step toward a basis for a possible fusion of the two split directions of psychological test theories IRT and KST.     

How children make language out of gesture: morphological structure in gesture systems developed by American and Chinese deaf children

When children learn language, they apply their language-learning skills to the linguistic input they receive. But what happens if children are not exposed to input from a conventional language? Do they engage their language-learning skills nonetheless, applying them to whatever unconventional input they have? We address this question by examining gesture systems created by four American and four Chinese deaf children. The children's profound hearing losses prevented them from learning spoken language, and their hearing parents had not exposed them to sign language. Nevertheless, the children in both cultures invented gesture systems that were structured at the morphological/word level. Interestingly, the differences between the children's systems were no bigger across cultures than within cultures. The children's morphemes could not be traced to their hearing mothers' gestures; however, they were built out of forms and meanings shared with their mothers. The findings suggest that children construct morphological structure out of the input that is handed to them, even if that input is not linguistic in form.