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41.
The motion of objects that are both translating and rotating can be decomposed into an infinite number of translational and rotational combinations. How, then, do such stimuli routinely elicit specific percepts and behavioral responses that are usually appropriate? A possible answer is that motion percepts are fully determined by the probability distributions of all the possible correspondences and differences in the stimulus sequence. To test the merits of this conceptual framework, we investigated the perceived motion elicited by a line that is both translating and rotating behind an aperture. When stimuli are presented such that a particular sequence of appearance and disappearance occurs at the aperture boundary, subjects report that the line is rotating only; furthermore, the perceived centers of rotation appear to describe a cycloidal trajectory, even when one aperture shape is replaced by another. These and other perceptual effects elicited by translating and rotating stimuli are all accurately predicted by the probability distribution of the possible sources of the physical movements, supporting the conclusion that motion perception is indeed generated by a wholly probabilistic strategy. 相似文献
42.
对动态范式中基于客体的返回抑制进行了考察。实验1在双侧客体改变和不改变条件下考察了返回抑制效应,结果表明,在双侧客体改变条件下返回抑制仍然存在。实验2采用单侧客体变化技术对动态范式中基于客体的返回抑制进行了测量,结果发现,在有效线索化条件下,单侧客体改变和不改变条件下对靶子的反应时没有显著差异(p > 0.90)。这些结果表明动态范式中基于客体的返回抑制的机制是空间抑制的动态更新,而不是客体表征受到抑制 相似文献
43.
西方指导关系的理论概述 总被引:1,自引:0,他引:1
指导关系研究是西方组织行为学界近30年来比较关注的话题,然而国内对它的介绍却非常少。作者总结了大量的国外文献,从指导关系的定义、功能、发展阶段和类型四个方面进行了详细的论述。现在西方指导关系的研究已经从理论建构转向了影响指导效果的因素上,结合国内的企业背景,文章最后提出了一些相关的研究建议 相似文献
44.
45.
影响大学生参与网上招聘意向的因素模型 总被引:2,自引:0,他引:2
该研究基于“计划行为理论”探索了影响大学生参与网上招聘意向的因素模型。研究结果证实了创建的模型对大学生参与网上招聘意向的预测和解释效力:(1)态度、针对网上招聘的特殊互联网自我效能感以及知觉到的对行为实施与否的控制力对大学生参与网上招聘的意向有显著的直接正向影响;(2)人际规范和知觉到的有用性对态度有显著的正向影响,知觉到的危险性对态度有显著的负向影响;(3)一般互联网自我效能感(ISE)对针对网上招聘的特殊ISE有显著的正向影响,对大学生参与网上招聘意向并没有直接的影响,而是通过针对网上招聘的特殊ISE这一中介变量产生间接影响。 相似文献
46.
彝族原始宗教和道教都是本土宗教,它们之间有诸多相融、相通之处,如诸神论、祖先崇拜、神仙思想贵阴贵柔、政教合一、返朴归真、天人感应、斋醮、法术法具、禹步等。 相似文献
47.
Jonathan M. Keefe Jocelyn L. Sy Frank Tong David H. Zald 《Attention, perception & psychophysics》2001,81(1):205-216
The emotional attentional blink (EAB) refers to a temporary impairment in the ability to identify a target when it is preceded by an emotional distractor. It is thought to occur because the emotional salience of the distractor exogenously captures attention for a brief duration, rendering the target unattended and preventing it from reaching awareness. Here we tested the extent to which the EAB can be attenuated by inducing a diffuse top-down attentional state, which has been shown to improve target identification in an analogous attentional phenomenon, the attentional blink. Rapid sequences of landscape images were presented centrally, and participants reported the orientation of a ± 90° rotation of a landscape target. To induce a diffuse state of attention, participants were given a secondary task of monitoring for the appearance of a colored dot in the periphery. We found that emotional distractors impaired target recognition performance to comparable extents, regardless of whether or not participants concurrently performed the peripheral-monitoring task. Moreover, we found that performance of the secondary task led to an impaired ability to ignore neutral distractors. Subjective ratings of target vividness mirrored the behavioral accuracy, with frequent reports of intermediate levels of vividness suggesting that the EAB might impair target visibility in a graded manner. Our results demonstrate that the EAB is robust to manipulations of top-down attention, suggesting that the temporary capture of attention by emotionally salient stimuli involves processes that are distinct from those that produce the attentional blink. 相似文献
48.
Baguley T 《Behavior research methods》2012,44(1):158-175
The psychological and statistical literature contains several proposals for calculating and plotting confidence intervals
(CIs) for within-subjects (repeated measures) ANOVA designs. A key distinction is between intervals supporting inference about
patterns of means (and differences between pairs of means, in particular) and those supporting inferences about individual
means. In this report, it is argued that CIs for the former are best accomplished by adapting intervals proposed by Cousineau
(Tutorials in Quantitative Methods for Psychology, 1, 42–45, 2005) and Morey (Tutorials in Quantitative Methods for Psychology, 4, 61–64, 2008) so that nonoverlapping CIs for individual means correspond to a confidence for their difference that does not include zero.
CIs for the latter can be accomplished by fitting a multilevel model. In situations in which both types of inference are of
interest, the use of a two-tiered CI is recommended. Free, open-source, cross-platform software for such interval estimates
and plots (and for some common alternatives) is provided in the form of R functions for one-way within-subjects and two-way
mixed ANOVA designs. These functions provide an easy-to-use solution to the difficult problem of calculating and displaying
within-subjects CIs. 相似文献
49.
Welch’s (Biometrika 29: 350–362, 1938) procedure has emerged as a robust alternative to the Student’s t test for comparing the means of two normal populations with unknown and possibly unequal variances. To facilitate the advocated
statistical practice of confidence intervals and further improve the potential applicability of Welch’s procedure, in the
present article, we consider exact approaches to optimize sample size determinations for precise interval estimation of the
difference between two means under various allocation and cost considerations. The desired precision of a confidence interval
is assessed with respect to the control of expected half-width, and to the assurance probability of interval half-width within
a designated value. Furthermore, the design schemes in terms of participant allocation and cost constraints include (a) giving
the ratio of group sizes, (b) specifying one sample size, (c) attaining maximum precision performance for a fixed cost, and
(d) meeting a specified precision level for the least cost. The proposed methods provide useful alternatives to the conventional
sample size procedures. Also, the developed programs expand the degree of generality for the existing statistical software
packages and can be accessed at brm.psychonomic-journals.org/content/ supplemental. 相似文献
50.
Køppe’s proposition of four layers in theoretical building are used here in the exploration of a specific case of eclectic combination, the use of Piagetian and Vygotskian general approaches to the analysis of proportional reasoning as a cognitive mathematical ability. It is proposed here that the eclectic consideration of these contributions depends on the consideration of their specificity, in the sense that they highlight different aspects of the phenomenon under scrutiny, and also on the consideration of the coherence between this eclectic convergence and premises in terms of schools of thought under which each contribution is framed. We conclude proposing in accordance to S. Køppe’s proposal that eclecticism can be valuable and heuristic in theory development, but this contribution will depend largely on the effort in establishing careful relations between the four layers of theory-building. 相似文献