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151.
策略型学习者认知心理结构及其运行机制 总被引:2,自引:0,他引:2
高效率学习是现代社会发展的需要,也是适应信息量急增的社会变革需要的必然选择。从教育心理学的视角研究策略型学习者,对其高效率学习心理,特别是高效率学习认知心理结构及其运行机制进行研究,有助于教育理论与实践工作者准确把握这类特殊教育对象的心理特点与规律,为开展策略型学习者教育提供了心理学依据。 相似文献
152.
Sascha Gönner Willi Ecker Rainer Leonhart 《Journal of psychopathology and behavioral assessment》2009,31(3):159-167
The extent to which the subscales of multidimensional OCD measures accurately distinguish patients with specific OCD main symptom domains from controls at different cutscores has not yet been examined. Diagnostic accuracy of OCD measures usually is determined by comparing the total scores of heterogeneous OCD samples and controls and therefore may underestimate the measures’ discrimination potential. In the current study, subtype-specific diagnostic accuracy and criterion-related validity of the Obsessive-Compulsive Inventory-Revised (OCI-R) subscales were examined in 327 patients with OCD, anxiety, and/or depressive disorders. All subscales demonstrated good to excellent criterion-related validity and diagnostic accuracy for distinguishing patients with specific OCD main symptom domains from controls. As expected, the single OCI-R subscales lead to more accurate diagnostic decisions than the total scale. Thus, the subscale-specific cutscores significantly improve the OCI-R’s utility for subtype-specific treatment planning and outcome measurement. Furthermore, an alternative classification algorithm distinguishing patients with OCD from controls based on subscale cutscores leads to a better sensitivity, but also to a lower specificity than discrimination based on the total scale cutscore. 相似文献
153.
Response times on test items are easily collected in modern computerized testing. When collecting both (binary) responses
and (continuous) response times on test items, it is possible to measure the accuracy and speed of test takers. To study the
relationships between these two constructs, the model is extended with a multivariate multilevel regression structure which
allows the incorporation of covariates to explain the variance in speed and accuracy between individuals and groups of test
takers. A Bayesian approach with Markov chain Monte Carlo (MCMC) computation enables straightforward estimation of all model
parameters. Model-specific implementations of a Bayes factor (BF) and deviance information criterium (DIC) for model selection
are proposed which are easily calculated as byproducts of the MCMC computation. Both results from simulation studies and real-data
examples are given to illustrate several novel analyses possible with this modeling framework.
The authors thank Steven Wise, James Madison University, and Pere Joan Ferrando, Universitat Rovira i Virgili, for generously
making available their data sets for the empirical examples in this paper. 相似文献
154.
Roman AA Kirby JR Parrila RK Wade-Woolley L Deacon SH 《Journal of experimental child psychology》2009,102(1):96-113
Research to date has proposed four main variables involved in reading development: phonological awareness, naming speed, orthographic knowledge, and morphological awareness. Although each of these variables has been examined in the context of one or two of the other variables, this study examines all four factors together to assess their unique contribution to reading. A sample of children in Grades 4, 6, and 8 (ages 10, 12, and 14 years) completed a battery of tests that included at least one measure of each of the four variables and two measures of reading accuracy. Phonological awareness, orthographic knowledge, and morphological awareness each contributed uniquely to real word and pseudoword reading beyond the other variables, whereas naming speed did not survive these stringent controls. The results support the sustained importance of these three skills in reading by older readers. 相似文献
155.
Robert G. Crowther Warwick L. Spinks Anthony S. Leicht Kunwarjit Sangla Frank Quigley Jonathan Golledge 《Human movement science》2009,28(4):494-503
The purpose of this study was to examine the effects of a 12 month exercise program on lower limb movement variability in patients with peripheral arterial disease (PAD). Participants (n = 21) with an appropriate history of PAD and intermittent claudication (IC) volunteered for this study and were randomly allocated to either a control group (CPAD–IC) (n = 11), which received normal medical therapy and a treatment group (TPAD–IC) (n = 10), which received normal medical therapy treatment and a 12 month supervised exercise program. All participants underwent 2D joint angular kinematic analysis during normal walking to assess lower limb movement variability and walking speed. Between-group differences were analyzed via mixed measures ANOVA. The 12 month supervised exercise program made no significant impact on the lower limb movement variability or walking speed of the TPAD–IC group as determined by either intralimb joint coordination or single joint analysis techniques. Long term supervised exercise programs do not appear to influence the lower limb movement variability of PAD–IC patients. 相似文献
156.
We investigated the properties of the sustained attention to response task (SART). In the SART, participants respond to frequent (high probability of occurrence) neutral signals and are required to withhold response to rare (low probability of occurrence) critical signals. We examined whether SART performance shows characteristics of speed–accuracy tradeoffs and in addition, we examined whether SART performance is influenced by prior exposure to emotional picture stimuli. Thirty-six participants in this study performed SARTs after being exposed to neutral and negative picture stimuli. Performance in the SART changed rapidly over time and there was a high correlation between participants errors of commission rate and their reaction time to the neutral targets (r = −.61). Regardless of exposure self-reported thoughts significantly correlated with both errors of commission and reaction times. Overall, the results support the view that the SART is a better measure of impulsive responding than sustained attention. 相似文献
157.
选取36名大学生,运用眼动技术,探讨不同结构类型文章在重复阅读时主题转换效应的变化特点。被试阅读的材料有两类:一是段落内部各个句子之间为平行关系(平行材料);一是每段第一个句子为该段落主题句(总分材料)。结果发现,两类材料在第一遍阅读过程中均出现了显著的主题转换效应,但在重复阅读时,主题转换效应消失,说明读者在第一遍阅读时已构建了文章的主题结构表征,并以此来指导后面的阅读。该结果支持共同策略假设理论,说明无论文章中是否存在标记,读者在阅读时都会构建一定完善的主题结构表征。 相似文献
158.
采用“呈现随眼动变化技术”对12名高中二年级学生的双字词阅读知觉广度进行了眼动研究。结果发现:(1)高中二年级学生的双字词阅读知觉广度具有不对称性。(2)高中二年级学生的双字词阅读知觉广度为注视点左侧一个双字词到右侧两个双字词的空间。 相似文献
159.
160.
单侧化准备电位的含义和应用 总被引:1,自引:1,他引:0
单侧化准备电位(Lateralized readiness potential, LRP)是指在随意运动中,反应效应器方位所对应的对侧大脑皮层出现的准备电位。LRP分析的关键是确定启动时间点。LRP可以揭示刺激-反应不同阶段的认知加工时间特性。可以从反应准备的抽象性或具体性以及大脑控制运动输出的“中枢”机制或“外周”机制这两个思路去验证LRP。LRP在阈下知觉和内隐学习、运动准备和反应执行、西蒙效应等方面的认知心理学研究以及新兴的脑-机界面工程心理学研究得到了广泛的应用,但LRP的应用存在着某些限制因素,如:脑电干扰、测量的低信噪比和其本身对反应效应器的要求等 相似文献