全文获取类型
收费全文 | 597篇 |
免费 | 34篇 |
专业分类
631篇 |
出版年
2024年 | 2篇 |
2023年 | 7篇 |
2022年 | 5篇 |
2021年 | 13篇 |
2020年 | 10篇 |
2019年 | 20篇 |
2018年 | 32篇 |
2017年 | 25篇 |
2016年 | 28篇 |
2015年 | 24篇 |
2014年 | 24篇 |
2013年 | 59篇 |
2012年 | 42篇 |
2011年 | 42篇 |
2010年 | 26篇 |
2009年 | 27篇 |
2008年 | 38篇 |
2007年 | 36篇 |
2006年 | 43篇 |
2005年 | 24篇 |
2004年 | 25篇 |
2003年 | 14篇 |
2002年 | 8篇 |
2001年 | 4篇 |
2000年 | 6篇 |
1999年 | 4篇 |
1998年 | 7篇 |
1997年 | 2篇 |
1996年 | 11篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1991年 | 2篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1987年 | 2篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1981年 | 1篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1976年 | 2篇 |
1974年 | 3篇 |
1972年 | 1篇 |
排序方式: 共有631条查询结果,搜索用时 15 毫秒
211.
Cechetti F Worm PV Elsner VR Bertoldi K Sanches E Ben J Siqueira IR Netto CA 《Neurobiology of learning and memory》2012,97(1):90-96
Physical activity impacts functional recovery following stroke in humans, however its effects in experimental animals submitted to chronic cerebral hypoperfusion have not been investigated. The aim of this study was to evaluate the therapeutic potential of exercise, as assessed by cognitive activity in the Morris water maze and the brain oxidative status, through measurement of macromolecules damage, TBARS levels and total cellular thiols, as well as antioxidant enzymes in hippocampus, striatum and cerebral cortex. Adult male Wistar rats were submitted to the modified permanent bilateral occlusion of the common carotid arteries (2VO) method, with right common carotid artery being first occluded, and tested 3 months after the ischemic event. The effects of three different exercise protocols were examined: pre-ischemia, post-ischemia and pre+post-ischemia. Physical exercise consisted of sessions of 20-min, 3 times per week during 12 weeks (moderate intensity). Rats were submitted to cognitive assessment, in both reference and working spatial memory and after the last testing session were sacrificed to have oxidative stress parameters determined. Hypoperfusion caused a significant cognitive deficit in both spatial water maze tasks and this effect was reversed in rats receiving exercise protocol post and pre+post the ischemic event. Moreover, forced regular treadmill exercise regulated oxidative damage and antioxidant enzyme activity in the hippocampus. These results suggest that physical exercise protects against cognitive and biochemical impairments caused by chronic cerebral hypoperfusion. 相似文献
212.
Fraga I Piñeiro A Acuña-Fariña C Redondo J García-Orza J 《Quarterly journal of experimental psychology (2006)》2012,65(9):1740-1759
We report three sentence completion experiments in which we manipulate the emotional dimension of the nouns in a complex noun phrase (NP) that precedes a relative clause (RC), as in the classic ambiguity in Someone shot the servant of the actress who was on the balcony. The aim was to see whether nouns such as orgy or genocide affect the well-established preference of Spanish to adjoin the relative clause high in the tree (to servant instead of actress in the example above). We manipulated the valence and arousal of the lexical entities residing in the NP. Our results indicate that (a) the inclusion of either pleasant or unpleasant words induces changes in the usual NP1 preference found in Spanish; (b) the effects of high-arousal words are especially clear, in that they pull RC adjunction towards the NP where they are located, be it the NP1 or the NP2; and (c) in the context of sentence production, these kinds of words seem intense enough to promote changes in (and even reverse) a solid syntactic bias. We discuss these findings in the light of existing theories of syntactic ambiguity resolution. 相似文献
213.
Juan Carlos Gómez 《Estudios de Psicología》2013,34(38):111-128
ResumenEn este artículo se presentan datos sobre las capacidades manipulativas y comunicativas del gorila en edad infantil. En un estudio anterior (Perinat y Dalmáu, 1988), se negaba la existencia en esta especie de manipulaciones de objetos intrínsecamente motivadas y de la capacidad de comunicarse sobre objetos. Nuestros datos demuestran, en primer lugar, que el gorila sí es capaz de manipular objetos con motivación intrínseca, tanto en acciones sencillas como en acciones constructivas complejas en las que se combinan varios objetos. En segundo lugar, se demuestra que el gorila es capaz de comunicarse gestualmente con adultos humanos a propósito de los objetos y las manipulaciones que pueden efectuarse sobre ellos. Finalmente, se discute cuál debe ser el enfoque de la investigación comparada del desarrollo cognitivo en primates humanos y no humanos. 相似文献
214.
The aim of this study was to examine the associations of control and vividness of mental imagery on performance in several components of in-depth drawing in a sample of fine arts undergraduates. The sample consisted of 56 second-year undergraduates (44 women and 12 men, mean age = 21.18 years) from the Fine Arts Faculty of Vigo University, Pontevedra, Spain. Participants were required to undertake a plastic art assignment focusing on the pictorial representation of space. Participants scoring high on the image control test obtained higher scores on the spatial analysis and in the formal construction of a work than participants with poor image control. Further research involving spatial image performance tests and mental image rotation tests is proposed. 相似文献
215.
Although terror management theory's proponents claim that it is an evolutionary theory of human behavior, its major tenets are implausible when examined carefully from a modern evolutionary perspective. We explain why it is unlikely that natural selection would have designed a “survival instinct” or innate “fear of death,” nor an anxiety-reduction system in general, or worldview-defense system in particular, to ameliorate such fears. We argue that results of mortality-salience experiments are better explained as by-products of a psychological system of coalitional computation that evolved for a variety of functions, including defense against other humans, that is activated by certain kinds of death-related thoughts. 相似文献
216.
217.
218.
Vicente Pelechano Pedro González-Leandro Livia García Carlos Morán 《International Journal of Clinical and Health Psychology》2013,13(1):18-24
The types of relationship between happiness, personality and psychopatholgy are assessed in an available sample (n = 321, adults, both sexes). Empirical results from two happiness scales and two questionnaires, one of personality (NEO-PI-R) and other of personality disorders (Loranger's scale), do not confirm the Diener's threshold hypothesis, that makes a distinction between optimum and maximum happiness; or the Seligman's supposition, that assumes that happiness has no limits; The main results are: a) negative affect (Neuroticism) is negatively related to happiness across its full range; b) Extraversion and Openness to experience are positively related to happiness across its full range; c) in the rest of the basic personality factors, relationships are not linear, though not in the sense anticipated by Diener, and d) in personality disorders, the tendencies observed diversify according to the type of disorder, and the type of happiness factor. On most occasions, the close relationship between personality disorders and the Neuroticism dimension is verified in a consistent manner. These results are discussed within the context of clinical psychology, and the general theory about happiness. 相似文献
219.
Tim Lomas Juan Carlos Medina Itai Ivtzan Silke Rupprecht Rona Hart Francisco José Eiroa-Orosa 《European Journal of Work and Organizational Psychology》2017,26(4):492-513
Work can be demanding, imposing challenges that can be detrimental to the physical and mental health of workers. Efforts are therefore underway to develop practices and initiatives that may improve occupational well-being. These include interventions based on mindfulness meditation. This paper offers a systematic review of empirical studies featuring analyses of mindfulness in occupational contexts. Databases were reviewed from the start of records to January 2016. Eligibility criteria included experimental and correlative studies of mindfulness conducted in work settings, with a variety of well-being and performance measures. A total of 153 papers met the eligibility criteria and were included in the systematic review, comprising 12,571 participants. Mindfulness was generally associated with positive outcomes in relation to most measures. However, the quality of the studies was inconsistent, so further research is needed, particularly involving high-quality randomized control trials. 相似文献
220.
The ability to identify stimuli that signal important events is fundamental for an organism to adapt to its environment. In the present paper, we investigated how more than one stimulus could be used jointly to learn a temporal discrimination task. Ten pigeons were exposed to a symbolic matching-to-sample procedure with three durations as samples (2, 6, and 18 s of keylight) and two colors as comparisons (red and green hues). A 30-s intertrial interval (ITI), illuminated with a houselight, separated the trials. Both the houselight and the sample keylight could control responding, so two tests were run to assess how these stimuli influenced choice. In the no-sample test, the keylight was not presented; in the dark-ITI test, the houselight was not illuminated. Results suggest that both houselight and keylight controlled choice, and with the exception of one animal, the more a pigeon relied on one of these stimuli, the less it appeared to rely on the other. 相似文献