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471.
Cronbach's alpha系数作为信度估计指标存在诸多弊端.为了克服其不足,研究者提出了多种信度估计,而流行的统计软件尚未直接提供这些参数,以致在实践中并未被广泛采用.为了缩小理论和实践的差距,文章通过具体实例给出几种常用的信度估计(合成信度,单个指标信度和ωh)的Mplus程序. 相似文献
472.
Ru Ye 《Australasian journal of philosophy》2016,94(3):563-575
According to the Dogmatism Puzzle presented by Gilbert Harman, knowledge induces dogmatism because, if one knows that p, one knows that any evidence against p is misleading and therefore one can ignore it when gaining the evidence in the future. I try to offer a new solution to the puzzle by explaining why the principle is false that evidence known to be misleading can be ignored. I argue that knowing that some evidence is misleading doesn't always damage the credential of the evidence, and therefore it doesn't always entitle one to ignore it. I also explain in what kind of cases and to what degree such knowledge allows one to ignore evidence. Hopefully, through the discussion, we can not only understand better where the dogmatism puzzle goes wrong, but also understand better in what sense rational believers should rely on their evidence and when they can ignore it. 相似文献
473.
Sangbeak Ye Georgios Fellouris Steven Culpepper Jeff Douglas 《The British journal of mathematical and statistical psychology》2016,69(2):139-158
In order to look more closely at the many particular skills examinees utilize to answer items, cognitive diagnosis models have received much attention, and perhaps are preferable to item response models that ordinarily involve just one or a few broadly defined skills, when the objective is to hasten learning. If these fine‐grained skills can be identified, a sharpened focus on learning and remediation can be achieved. The focus here is on how to detect when learning has taken place for a particular attribute and efficiently guide a student through a sequence of items to ultimately attain mastery of all attributes while administering as few items as possible. This can be seen as a problem in sequential change‐point detection for which there is a long history and a well‐developed literature. Though some ad hoc rules for determining learning may be used, such as stopping after M consecutive items have been successfully answered, more efficient methods that are optimal under various conditions are available. The CUSUM, Shiryaev–Roberts and Shiryaev procedures can dramatically reduce the time required to detect learning while maintaining rigorous Type I error control, and they are studied in this context through simulation. Future directions for modelling and detection of learning are discussed. 相似文献
474.
A Monte Carlo study was used to compare four approaches to growth curve analysis of subjects assessed repeatedly with the same set of dichotomous items: A two‐step procedure first estimating latent trait measures using MULTILOG and then using a hierarchical linear model to examine the changing trajectories with the estimated abilities as the outcome variable; a structural equation model using modified weighted least squares (WLSMV) estimation; and two approaches in the framework of multilevel item response models, including a hierarchical generalized linear model using Laplace estimation, and Bayesian analysis using Markov chain Monte Carlo (MCMC). These four methods have similar power in detecting the average linear slope across time. MCMC and Laplace estimates perform relatively better on the bias of the average linear slope and corresponding standard error, as well as the item location parameters. For the variance of the random intercept, and the covariance between the random intercept and slope, all estimates are biased in most conditions. For the random slope variance, only Laplace estimates are unbiased when there are eight time points. 相似文献
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476.
科学界定地方政府职能取决于纵向——中央-地方政府权力关系架构下的权责划分和横向——不同时代条件下政府属性及其行为取向这两个维度变量的影响。本文基于经济学公共品理论的研究视角,构建了一个以地方层次上的外部性和规模经济构成的二维空间,以此作为中央-地方政府职能划分的判断矩阵,并进一步简要分析了中国地方政府机构改革取向。本文认为,中国地方政府机构设置与中央政府有同有异理应是主流政策取向。具体而言,省级政府可能最为接近中央政府的模式,地市级政府可能更偏向于因地制宜的模式,而县、乡级政府将趋于功能整合、部门精简,一如缩微版的大部制。 相似文献
477.
本文对近期百草枯急性中毒研究进展进行了综述,从临床角度对百草枯急性中毒的研究进行哲学思考,指出应从以下几个方面开展研究:研究发现有效拮抗剂;进行综合系统的实验研究;建立全国性救治中心;重视救治成功的个案报道;组织多中心、大样本的临床研究;多学科协作。 相似文献
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479.
摘要 由笛卡尔开创的身心二元论一直制约着人们对身心关系的认识。但是近年来兴起的具身认知研究却从理论和实证的角度系统论证了二元论的不可能性,指出了心智对身体的依赖性,并据此提出了身心一体的身心关系学说。最初,有关具身认知的讨论仅仅是哲学领域有关身心关系问题的形而上学思考,随后开始成为心理学中的一种理论思维,并逐步进入实验心理学领域。如今,ERP、FMRI等认知神经科学的手段在具身认知的研究中得到了广泛使用。具身认知已成为心理学和认知科学中的一股汹涌澎湃的实证研究思潮。 相似文献
480.
日译名"超越论的"与"超越的"源流考 总被引:2,自引:1,他引:1
"先验"、"超验"分别作为康德哲学的关键词transzendental与transzendent的译名在中国由来已久,但是自上世纪70年代以来,这两个译名在日本学界已经被"超越论的"与"超越的"所取代,而近年来一些中国学者也开始提议采用新的日译名.而对于新的日译名,学界中人多数恐怕对它们的具体源流并不清楚.本文旨在考察中日两国近年来有关transzendental与transzendent的译名动向,进而回溯到日译名"超越论的"与"超越的"产生的源流和发展,兼及调查中国学界对其接受的情况. 相似文献