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801.
Research has found that positive affect broadens attention. However, these studies have manipulated positive affect that is low in approach motivation. Positive affect that is high in approach motivation should reduce the breadth of attention, as organisms shut out irrelevant stimuli as they approach desired objects. Four studies examined the attentional consequences of approach-motivated positive-affect states. Results were consistent with predictions. Participants showed less global attentional focus after viewing high-approach-motivating positive stimuli than after viewing low-approach-motivating positive stimuli (Study 1) or neutral stimuli (Study 2). Study 3 found that greater trait approach motivation resulted in less global attentional focus after participants viewed approach-motivating positive stimuli. Study 4 manipulated affect and approach motivation independently. Greater approach-motivated positive affect caused lower global focus. High-approach-motivated positive affect reduces global attentional focus, whereas low-approach-motivated positive affect increases global attentional focus. Incorporating the intensity of approach motivation into models of positive affect broadens understanding of the consequences of positive affect.  相似文献   
802.
803.
The utility of an "ecologically rational" recognition-based decision rule in multichoice decision problems is analyzed, varying the type of judgment required (greater or lesser). The maximum size and range of a counterintuitive advantage associated with recognition-based judgment (the "less-is-more effect") is identified for a range of cue validity values. Greater ranges of the less-is-more effect occur when participants are asked which is the greatest of m choices ( m > 2) than which is the least. Less-is-more effects also have greater range for larger values of m . This implies that the classic two-alternative forced choice task, as studied by Goldstein and Gigerenzer (2002) , may not be the most appropriate test case for less-is-more effects.  相似文献   
804.
Brain arteriovenous malformations (AVM's) are developmental, chronic lesions that provide unique information about the human brain and can be a useful model for neuroscientists to study cerebral reorganization and hemodynamics. We review the neuroanatomy, epidemiology, natural history, imaging and treatment of brain AVMs, and provide a model with which to better understand neuropsychological functioning and brain reorganization. We suggest that future studies must exclude ruptured AVMs if they wish to further explain focal neurological/cognitive deficits associated with this neurovascular anomaly.  相似文献   
805.
The present study examined individual differences in the automaticity of visual word recognition. Specifically, we examined whether people can recognize words while central attention is devoted to another task and how this ability depends on reading skill. A lexical-decision Task 2 was combined with either an auditory or visual Task 1. Regardless of the Task 1 modality, Task 2 word recognition proceeded in parallel with Task 1 central operations for individuals with high Nelson-Denny reading scores, but not for individuals with low reading scores. We conclude that greater lexical skill leads to greater automaticity, allowing better readers to more efficiently perform lexical processes in parallel with other attention-demanding tasks.  相似文献   
806.
Surgical disconnection of the frontal cortex and inferotemporal cortex severely impairs many aspects of visual learning and memory, including learning of new object-in-place scene memory problems, a monkey model of episodic memory. As part of a study of specialization within prefrontal cortex in visual learning and memory, we tested monkeys with bilateral ablations of ventrolateral prefrontal cortex in object-in-place scene learning. These monkeys were mildly impaired in scene learning relative to their own preoperative performance, similar in severity to that of monkeys with bilateral ablation of orbital prefrontal cortex. An analysis of response types showed that the monkeys with lesions were specifically impaired in responding to negative feedback during learning: The post-operative increase in errors was limited to trials in which the first response to each new problem, made on the basis of trial and error, was incorrect. This perseverative pattern of deficit was not observed in the same analysis of response types in monkeys with bilateral ablations of the orbital prefrontal cortex, who were equally impaired on trials with correct and incorrect first responses. This may represent a specific signature of ventrolateral prefrontal involvement in episodic learning and memory.  相似文献   
807.
The aim of this article is to introduce and summarise the main feature of the new Birmingham City Council Agreed Syllabus for Religious Education (2007 Birmingham City Council (BCC). 2007. Agreed Syllabus for Religious Education, Birmingham: City Council.  [Google Scholar]), consider the relevance of its commitments and conclusions to ongoing debates within British religious education, and, finally, offer some kind of provisional assessment of its strengths and worth. By way of introduction, attention is given both to the mounting controversy that currently attends British religious education, which has given rise to conflicting opinions and estimates of its achievements and value, and to the historical role and legal status of agreed syllabuses within English and Welsh education.  相似文献   
808.
White matter hyperintensities (WMH) are commonly observed in elderly people and may have the most profound effect on executive functions, including working memory. Surprisingly, the Digit Span backward, a frequently employed working memory task, reveals no association with WMH. In the present study, it was investigated whether more detailed analyses of WMH variables and study sample selection are important when establishing a possible relationship between the Digit Span backward and WMH. To accomplish this, the Digit Span backward and additional working memory tests, WMH subscores, and cardiovascular risk factors were examined. The results revealed that performance on the Digit Span backward test is unrelated to WMH, whereas a relationship between other working memory tests and WMH was confirmed. Furthermore, a division between several white matter regions seems important; hyperintensities in the frontal deep white matter regions were the strongest predictor of working memory performance.  相似文献   
809.
A perplexing problem with Adams' (1963 ) equity theory has been the difficulty associated with operationalizing requisite components, perceived employee inputs, and outcomes. This study, involving 352 respondents, produced empirically derived, two-dimensional taxonomies of inputs and outcomes, laying the foundation for identification of key variables. Specifically, the study summarizes a typology of 9 distinct employee inputs perceived as controllable by individuals, including effort, education, attendance, and cooperativeness. Conversely, the study summarizes a typology of 14 distinct outcomes along a continuum of 4 dimensions, including personalized vs. generalized and economic vs. noneconomic characteristics. These typologies and incumbent regression analysis provide insight into the complexities associated with inputs and outcomes in the context of equity theory.  相似文献   
810.
Thirty-nine children with a diagnosed pervasive developmental disorder (PDD) participated in homogeneous psychotherapy groups. Their social development was assessed at home and at school both before and after treatment. Significant improvements in social functioning were observed in both settings, and these gains were not attributable to demographic variables or cognitive development. This research provides psychometric validation for the Vineland Adaptive Behavior Scale (VABS; Sparrow, Balla, & Cicchetti, 1984) and the Tyminski Social Skills Checklist (SSC), a new index designed to assess children's social functioning in educational settings. The results suggest that group therapy may be an important modality for better understanding and developing crucial social skills among the growing number of children diagnosed with a pervasive developmental disorder.  相似文献   
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