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121.
本研究以172名幼儿园中、大班和小学一年级的5~7岁儿童为研究对象, 测查了语音范畴性知觉、语音意识、短时记忆和汉字识别, 并通过群体差异比较、分层回归和结构方程建模的方法, 探讨了语音范畴性知觉、语音意识和早期阅读的关系。结果发现:(1)5~7岁儿童的语音范畴性知觉、语音意识能力随年龄的增加而显著提高;(2)语音范畴性知觉能力与语音意识, 特别是韵母意识和音节意识显著相关;(3)在语音与早期汉字识别能力的发展模型中, 语音范畴性知觉不直接影响汉字识别, 其对早期阅读的影响是通过语音意识的中介来实现的。 相似文献
122.
本实验采用ERP技术,考察性别刻板印象的表征。结果发现,无论启动是上位范畴、子范畴、典型样例还是反例,被试对于刻板印象不一致的表征比一致的表征均诱发了波幅更大的N400,反应时更长。并且,被试对于性别刻板印象的表征存在层级差异。研究结果表明:(1)性别刻板印象的表征存在层级结构。(2)语义启动下,性别刻板印象违背诱发N400效应。(3)性别刻板印象表征存在自上而下的由大脑额叶进行的语义分类加工。 相似文献
123.
Rebecca W. Hamilton Stefano Puntoni Nader T. Tavassoli 《Organizational behavior and human decision processes》2010
Categorization is a core psychological process that is central to decision making. While a substantial amount of research has been conducted to examine individual categorization behavior, little is known about how the outputs of individual and group categorization may differ. Four experiments demonstrate that group categorization differs systematically from individual categorization in the structural dimension of category breadth: categorizing the same set of items, groups tend to create a larger number of smaller categories than individuals. This effect of social context is a function of both taskwork and teamwork. In terms of taskwork, groups’ greater available knowledge mediates differences in category breadth between individuals and groups by increasing utilized knowledge (study 2). In terms of teamwork, task conflict moderates the effect of social context on category breadth (study 3). Moreover, the experience of categorizing individually or in a group influences individuals’ subsequent judgments (study 4). 相似文献
124.
This paper exemplifies a secondary data analysis of context-specific differences in children's hyperactivity-impulsivity while controlling for informant-specific effects. Participants were boys and girls from the NICHD Study of Early Child Care and Youth Development who were measured in 1(st), 3(rd), and 5(th) grades. Latent factor models were structured using multi-informant reports including mothers, fathers, teachers, and observers. Temporal stability within a context was stronger than cross-context consistency, and the magnitude of longitudinal stability was higher in the home context compared to the school context. Controlling for informant-specific effects resulted in a significantly improved model fit and increased within-context stability. Our findings highlight the importance of considering both context and informant effects when studying longitudinal stability and change in personality development. 相似文献
125.
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127.
Recognition memory involves knowing an item was learned (familiarity) and remembering contextual details about the prior learning episode (recollection). We tested three competing hypotheses about the role of the hippocampus in recollection and familiarity. It mediates either recollection or familiarity, or serves both processes. We further tested whether the left temporal lobe mediates recollection and the right temporal lobe familiarity (modes of processing view), or whether the two temporal lobes mediate remembering material specifically (material specificity view). We investigated 24-h face recognition using the "remember-know" procedure. We studied 23 left and 24 right temporal lobe epilepsy (LTLE/RTLE) patients with and without hippocampal sclerosis (HS+/HS-) and 31 healthy participants. HS+ patients made fewer know responses than HS- patients or healthy participants. RTLE was related to fewer remember responses than LTLE. Our results suggest the hippocampus has a critical role in familiarity. Further, our findings support the material specificity hypothesis of laterality. 相似文献
128.
This article demonstrates the potential of using hierarchical Bayesian methods to relate models and data in the cognitive sciences. This is done using a worked example that considers an existing model of category representation, the Varying Abstraction Model (VAM), which attempts to infer the representations people use from their behavior in category learning tasks. The VAM allows for a wide variety of category representations to be inferred, but this article shows how a hierarchical Bayesian analysis can provide a unifying explanation of the representational possibilities using 2 parameters. One parameter controls the emphasis on abstraction in category representations, and the other controls the emphasis on similarity. Using 30 previously published data sets, this work shows how inferences about these parameters, and about the category representations they generate, can be used to evaluate data in terms of the ongoing exemplar versus prototype and similarity versus rules debates in the literature. Using this concrete example, this article emphasizes the advantages of hierarchical Bayesian models in converting model selection problems to parameter estimation problems, and providing one way of specifying theoretically based priors for competing models. 相似文献
129.
The purpose of the present study was to assess the navigational behaviour of adult humans following a disorientation procedure
that perturbed their egocentric frame of reference. The assessment was carried out in a virtual reality (VR) environment by
manipulating the disorientation procedure, the retention interval, the relative positions of target and landmark. The results
of experiment I demonstrated that adding a physical rotation to a virtual disorientation procedure did not yield an additional
decrease in searching performance. The results of experiment II showed that shortening the delay between study and test phase
decreased the errors more markedly for geometric than landmark ones. An orientation specificity effect due to the manipulation
of the relative position between target and landmark was discussed across the experiments. In conclusion, VR seemed to be
a valuable method for studying human reorientation. Moreover, the virtual experimental setting involved here promoted knowledge
of the relationship between working memory and spatial reorientation paradigm. 相似文献
130.
Lisa R. Grimm W. Todd Maddox Grant C. Baldwin 《Journal of experimental social psychology》2008,44(3):920-927
Motivation affects the degree to which people engage in tasks as well as the processes that they bring to bear. We explore the proposal that a fit between a person’s situationally induced self-regulatory focus and the reward structure of the task that they are pursuing supports greater flexibility in processing than does a mismatch between regulatory focus and reward structure. In two experiments, we prime regulatory focus and manipulate task reward structure. Our participants perform a rule-based learning task whose solution requires flexible strategy testing as well as an information-integration task for which flexible strategy use hinders learning. Across two experiments, we predict and obtain a three-way interaction between regulatory focus, reward structure, and task. Relative to a mismatch, a match leads to better rule-based task performance, but worse performance on the information-integration task. We relate these findings to other work on motivation and choking under pressure. 相似文献