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491.
Perceptual load is a key determinant of distraction by task-irrelevant stimuli (e.g., Lavie, N. (2005). Distracted and confused?: Selective attention under load. Trends in Cognitive Sciences, 9, 75-82). Here we establish the role of perceptual load in determining an internal form of distraction by task-unrelated thoughts (TUTs or “mind-wandering”).Four experiments demonstrated reduced frequency of TUTs with high compared to low perceptual load in a visual-search task. Alternative accounts in terms of increased demands on responses, verbal working memory or motivation were ruled out and clear effects of load were found for unintentional TUTs. Individual differences in load effects on internal (TUTs) and external (response-competition) distractors were correlated. These results suggest that exhausting attentional capacity in task-relevant processing under high perceptual load can reduce processing of task-irrelevant information from external and internal sources alike. 相似文献
492.
Children’s early word production is influenced by the statistical frequency of speech sounds and combinations. Three experiments asked whether this production effect can be explained by a perceptual learning mechanism that is sensitive to word-token frequency and/or variability. Four-year-olds were exposed to nonwords that were either frequent (presented 10 times) or infrequent (presented once). When the frequent nonwords were spoken by the same talker, children showed no significant effect of perceptual frequency on production. When the frequent nonwords were spoken by different talkers, children produced them with fewer errors and shorter latencies. The results implicate token variability in perceptual learning. 相似文献
493.
Habitual emotional state is a predictor of long-term health and life expectancy and successful emotion regulation is necessary
for adaptive functioning. However, people are often unsuccessful in regulating their emotions. We investigated the use of
cognitive reappraisal and expressive suppression in 489 university students in Norway, Australia, and the United States and
how these strategies related to measures of well-being (affect, life satisfaction, and depressed mood). Data was collected
by means of selfadministered questionnaires. The major aims of the study were to begin to explore the prevalence of use of
cognitive reappraisal and expressive suppression across gender, age and culture, possible antecedents of emotion regulation
strategies, and the influence of emotion regulation upon well-being. Results showed that the use of emotion regulation strategies
varied across age, gender and culture. Private self-consciousness (self-reflection and insight) was found to be a central
antecedent for the use of cognitive reappraisal. Use of emotion regulation strategies predicted well-being outcomes, also
after the effect of extraversion and neuroticism had been controlled for. Generally, increased use of cognitive reappraisal
predicted increased levels of positive well-being outcomes, while increased use of expressive suppression predicted increased
levels of negative well-being outcomes.
相似文献
Silje Marie HagaEmail: |
494.
Visual laterality responses to different emotive stimuli by red-capped mangabeys, Cercocebus torquatus torquatus 总被引:1,自引:1,他引:0
Hemispheric asymmetry in emotional perception has been put forward by different theories as the right hemisphere theory or
the valence theory. But no consensus was found about the role played by both hemispheres. So, in order to test the different
theories, we investigated preferential use of one eye in red-capped mangabeys, at the individual as well as at the group level.
In this study we investigated the influence of the emotional value of stimuli on the direction and strength of visual preference
of 14 red-capped mangabeys. Temporal stability of the bias of use of a given eye was evaluated by comparing our current results
to those obtained 2.5 months previously. Two experimental devices, a tube and a box, tested five different stimuli: four food
types varying in palatability and a neutral stimulus. The subjects’ food preferences were evaluated before testing the laterality.
The mangabeys used their left eyes predominantly at the group level for the tube task. The majority of the subjects showed
a visual preference at the individual level for the box task, but this bias was not present at the group level. As the palatability
of the stimuli increased, the number of lateralized subjects and the number of subjects using preferentially their left eye
increased. Similarly, the strength of laterality was related to food preference. Strength of laterality was significantly
higher for subjects using their left eye than for subjects using their right eye. Preferential use of a given eye was stable
over short periods 2.5 months later. Our data agree with reports on visual laterality for other species. Our results support
the valence theory of a hemispheric sharing of control of emotions in relation to their emotional value. 相似文献
495.
脑科学研究表明,分类中对物体的知觉表征激活颞下叶皮层和颞中区等区域;语义表征激活前额皮层等。语义加工和知觉表征相互作用的脑机制表现为额区与视觉区域间信息的传递、提取。分类策略主要有规则策略和相似性策略两种。规则策略激活额区等广泛区域;相似性策略与视觉区域相关,包含着对个别样例的记忆过程。基于以上研究结果,本文从学习材料的表征和对材料进行表征时的策略两个方面为思维教学提出了一些建议。 相似文献
496.
以往研究表明,工作记忆能力高的个体在自我控制方面也表现得更好,通过考察工作记忆广度(working memory span, WMS)与自我损耗的关系,有助于揭示这种现象的内在机制。66名被试随机分为损耗组和控制组,采用自动化操作广度测验测量WMS。双任务实验中,任务一为情绪抑制任务,任务二为Stroop任务。结果发现,损耗组的Stroop效应明显高于控制组。进一步分析显示,损耗组中高WMS被试的自我损耗效应要强于低WMS被试,此结果表明:高WMS个体在自我控制任务中表现得更好并不是因为固有的自我控制能量水平更高,而是因为他们倾向于在自我控制过程中投入更多能量。 相似文献
497.
Acquiring perceptual expertise is slow and effortful. However, untrained novices can accurately make difficult classification decisions (e.g., skin‐lesion diagnosis) by reformulating the task as similarity judgment. Given a query image and a set of reference images, individuals are asked to select the best matching reference. When references are suitably chosen, the procedure yields an implicit classification of the query image. To optimize reference selection, we develop and evaluate a predictive model of similarity‐based choice. The model builds on existing psychological literature and accommodates stochastic, dynamic shifts of attention among visual feature dimensions. We perform a series of human experiments with two stimulus types (rectangles, faces) and nine classification tasks to validate the model and to demonstrate the model's potential to boost performance. Our system achieves high accuracy for participants who are naive as to the classification task, even when the classification task switches from trial to trial. 相似文献
498.
499.
Concepción Padilla Julia Mayas Soledad Ballesteros Pilar Andrés 《Memory (Hove, England)》2017,25(8):1026-1035
Despite the evidence revealing benefits of chronic cardiovascular exercise on executive functions, little research has been conducted on long-term memory. We aimed to investigate the effect of physical exercise on implicit and explicit memory when attention was modulated at encoding in two groups of active and sedentary participants. With this purpose, attention was manipulated in a similar way in the implicit and explicit memory tasks by presenting picture outlines of two familiar objects, one in blue and the other in green, and participants were asked to pay attention only to one of them. Implicit memory was assessed through conceptual priming and explicit memory through a free recall task followed by recognition. The results did not reveal significant differences between groups in conceptual priming or free recall. However, in recognition, while both groups had similar discrimination for attended stimuli, active participants showed lower discrimination between unattended and new stimuli. These results suggested that exercise may have effects on specific cognitive processes, that is, that active participants may suppress non-relevant information better than sedentary participants, making the discrimination between unattended and new items more difficult. 相似文献
500.