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排序方式: 共有280条查询结果,搜索用时 15 毫秒
71.
本实验通过将具有参考框架信息的前置刺激改为掩蔽刺激,进一步探讨参考框架的变化和表象旋转的过程。结果表明:1、因掩蔽刺激而引起的主观参考框架的产生是瞬间完成的,而不是由原先直立的参考框架经过连续旋转后形成的。2、显示了倾斜字母的加工不完全是整体表象的线性旋转过程,而可能是整字一成分的混合加工过程。 相似文献
72.
Orthogonal procrustes rotation for two or more matrices 总被引:2,自引:0,他引:2
Jos M. F. Ten Berge 《Psychometrika》1977,42(2):267-276
Necessary and sufficient conditions for rotating matrices to maximal agreement in the least-squares sense are discussed. A theorem by Fischer and Roppert, which solves the case of two matrices, is given a more straightforward proof. A sufficient condition for a best least-squares fit for more than two matrices is formulated and shown to be not necessary. In addition, necessary conditions suggested by Kristof and Wingersky are shown to be not sufficient. A rotation procedure that is an alternative to the one by Kristof and Wingersky is presented. Upper bounds are derived for determining the extent to which the procedure falls short of attaining the best least-squares fit. The problem of scaling matrices to maximal agreement is discussed. Modifications of Gower's method of generalized Procrustes analysis are suggested. 相似文献
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Urbano Lorenzo-Seva 《Psychometrika》2000,65(3):301-318
Cureton & Mulaik (1975) proposed the Weighted Varimax rotation so that Varimax (Kaiser, 1958) could reach simple solutions when the complexities of the variables in the solution are larger than one. In the present paper the weighting procedure proposed by Cureton & Mulaik (1975) is applied to Direct Oblimin (Clarkson & Jennrich, 1988), and the rotation method obtained is called Weighted Oblimin. It has been tested on artificial complex data and real data, and the results seem to indicate that, even though Direct Oblimin rotation fails when applied to complex data, Weighted Oblimin gives good results if a variable with complexity one can be found for each factor in the pattern. Although the weighting procedure proposed by Cureton & Mulaik is based on Landahl's (1938) expression for orthogonal factors, Weighted Oblimin seems to be adequate even with highly oblique factors. The new rotation method was compared to other rotation methods based on the same weighting procedure and, whenever a variable with complexity one could be found for each factor in the pattern, Weighted Oblimin gave the best results. When rotating a simple empirical loading matrix, Weighted Oblimin seemed to slightly increase the performance of Direct Oblimin.The author is obliged to Henk A. L. Kiers and three anonymous reviewers for helpful comments on an earlier version of this paper. 相似文献
76.
本研究基于事件相关电位技术,以32名大学生为研究对象,采用2(诱发条件:高奖赏、低奖赏)×3(反馈类型:欺骗成功、欺骗失败、诚实)的组内实验设计,以点判断任务操控被试的自主欺骗水平,并结合欺骗及时反馈范式来操纵被试的结果评价。结果发现:(1)在决策过程,做出欺骗决策比诚实决策诱发更大波幅的P300;(2)在结果评价过程,相比欺骗成功反馈和诚实反馈,欺骗失败反馈诱发更负的FRN波幅。结果显示个体做出欺骗决策比诚实决策需要更多的注意资源参与和心理努力,并且对欺骗失败反馈的敏感度远高于欺骗成功反馈和诚实反馈。这一定程度上揭示了个体做出欺骗决策和面对欺骗结果时的心理和神经机制,为教育者采取必要措施来降低和预防青少年欺骗行为奠定了研究基础。 相似文献
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A special rotation procedure is proposed for the exploratory dynamic factor model for stationary multivariate time series. The rotation procedure applies separately to each univariate component series of aq-variate latent factor series and transforms such a component, initially represented as white noise, into a univariate moving-average. This is accomplished by minimizing a so-called state-space criterion that penalizes deviations of the rotated solution from a generalized state-space model with only instantaneous factor loadings. Alternative criteria are discussed in the closing section. The results of an empirical application are presented in some detail.This research was supported by the Institute for Developmental and Health Research Methodology, University of Virginia. 相似文献
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采用虚拟的旋转不同角度左、右手模型,构建“左右手判断(Left and right hand judgment: LR)”任务和“相同-不同判断(same and different judgment: SD)”任务,考察这两种实验任务是否都存在内旋效应和角度效应,以此推论被试采用何种旋转策略。结果发现:(1) 两种实验任务结果均表现出显著的角度效应。(2)在LR任务条件下,存在显著的内旋效应,而在SD任务中不存在内旋效应。从而表明当人手图片作为心理旋转材料时,它具有双重角色。被试心理旋转加工时究竟选用何种参照系的旋转策略,与实验材料和实验任务两者都密不可分 相似文献
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