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971.
There has been a recent surge in the study of ensemble coding, the idea that the visual system represents a set of similar items using summary statistics (Alvarez & Oliva, 2008; Ariely, 2001; Chong & Treisman, 2003; Parkes, Lund, Angelucci, Solomon, & Morgan, 2001). We previously demonstrated that this ability extends to faces and thus requires a high level of object processing (Haberman & Whitney, 2007, 2009). Recent debate has centered on the nature of the summary representation of size (e.g., Myczek & Simons, 2008) and whether the perceived average simply reflects the sampling of a very small subset of the items in a set. In the present study, we explored this further in the context of faces, asking observers to judge the average expressions of sets of faces containing emotional outliers. Our results suggest that the visual system implicitly and unintentionally discounts the emotional outliers, thereby computing a summary representation that encompasses the vast majority of the information present. Additional computational modeling and behavioral results reveal that an intentional cognitive sampling strategy does not accurately capture observer performance. Observers derive precise ensemble information given a 250-msec exposure, suggesting a rapid and flexible system not bound by the limits of serial attention. 相似文献
972.
Executive working memory (WM) load reduces the efficiency of visual search, but the mechanisms by which this occurs are not fully known. In the present study, we assessed the effect of executive load on perceptual processing during search. Participants performed a serial oculomotor search task, looking for a circle target among gapped-circle distractors. The participants performed the task under high and low executive WM load, and the visual quality (Experiment 1) or discriminability of targets and distractors (Experiment 2) was manipulated across trials. By the logic of the additive factors method (Sternberg, 1969, 1998), if WM load compromises the quality of perceptual processing during visual search, manipulations of WM load and perceptual processing difficulty should produce nonadditive effects. Contrary to this prediction, the effects of WM load and perceptual difficulty were additive. The results imply that executive WM load does not degrade perceptual analysis during visual search. 相似文献
973.
Patrick C. Flood Eithne Hannan Ken G. Smith Thomas Turner Michael A. West Jeremy Dawson 《European Journal of Work and Organizational Psychology》2013,22(3):401-420
Using data from 79 high technology firms in the US and Ireland this study concludes that leadership style has both direct and indirect relationships with consensus decision making and with the reported effectiveness of top management teams. It focuses on what effective leaders do rather than the individual traits they possess and distinguishes between four styles of leadership: authoritarian (characterized by the use of instruction and non-contingent reprimand), transactional (influence via exchange of valued rewards for services/behaviours), transformational (inspiring followers to do more than originally expected), and laissez faire (avoiding decision making and supervisory responsibility). The transformational style of leadership was significantly and positively related, and the laissez faire style was significantly negatively related to reported team 相似文献
974.
George W. Rebok D. Xeno Rasmusson Frederick W. Bylsma Jason Brandt 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2013,20(4):304-312
Abstract The effectiveness of two commercially available audiocassette memory improvement programs was evaluated in a sample of 32 healthy, community-living elderly adults. Participants were given a set of either Syber Vision's Neuropsychology of Memory Power tapes (Bornstein, 1989) or Nightingale-Conant's Mega Memory tapes (Trudeau, 1992), and a portable cassette player, and instructed to complete the programs within 10 weeks. All participants received a comprehensive battery of memory tests prior to and immediately following the memory improvement programs. Participants completing the memory improvement programs showed no greater gains in memory test performance than no-treatment control participants, but did report greater confidence in their memory abilities. Participants completing the Mega Memory program thought they were less likely to develop Alzheimer's disease after having completed it compared with participants in the other two conditions. Participants reported finding both tape programs acceptable and potentially useful for improving memory; those who completed the Memory Power program reported somewhat greater satisfaction than those completing the Mega Memory program. the claims about rapid, dramatic memory improvement with use of these products were not substantiated in this group of elderly adults and appear to be grossly exaggerated. 相似文献
975.
Naser Aghababaei Jason Adam Wasserman Drew Nannini 《Mental health, religion & culture》2013,16(1):24-29
The relationship of religiousness with the HEXACO (Honesty-Humility, Emotionality, Extraversion, Agreeableness, Conscientiousness, Openness) model of personality was studied in Iran and the United States. Correlations of personality factors and religiousness were generally similar across the two societies. In both countries, religiousness was associated with higher scores on Honesty-Humility, Extraversion, Agreeableness, and Conscientiousness. The Honesty-Humility factor was one of the strongest correlates of religiousness in both countries. These findings support Saroglou's observation that the main personality characteristics of religiousness are consistent across different religious contexts and personality measures and models. 相似文献
976.
Jason C. Allaire Sherry L. Willis 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2013,20(2):207-224
This study examined the association of a performance-based measure of everyday functioning with clinically meaningful outcomes. Elderly participants in a prospective study of dementia were assessed at two occasions on the Everyday Problems Test for Cognitively Challenged Elderly (EPCCE), a performance-based measure of everyday functioning. Older adults who remained cognitively intact performed approximately 0.66 SD units higher on the EPCCE at both occasions than elders rated as impaired, when covarying on age, education, gender, and cognitive status. Relative to the nonimpaired participants, decline in EPCCE performance over a 2-year interval was significantly greater for impaired participants and those participants who transitioned from nonimpaired to impaired over the course of the study. Increased risk of mortality was associated with lower baseline scores and decline in EPCCE performance even after controlling for demographic variables and performance on the Mini-Mental State Examination. Given the clinical importance of identifying “at risk” elders for impairment, the findings from this study provide initial evidence for the predictive utility of performance-based measures of everyday functioning. 相似文献
977.
Jason Royce Lindsey 《Ethical Theory and Moral Practice》2013,16(1):99-111
For Gianni Vattimo, the renunciation of violence is the starting point for constructing a post foundational politics. So far, criticism of Vattimo’s argument has focused on his larger commitment to metaphysical nihilism and whether the renunciation of violence is a thicker principle than his post foundational philosophy can support. I argue that Vattimo’s renunciation of violence can also be criticized for two other reasons. First, Vattimo attempts to distinguish between acceptable and unacceptable uses of violence through an under developed idea of self-defense. Second, despite his attention to the political and philosophical impact of mass communications technology, Vattimo ignores emerging technological challenges to our understanding of violence. Nonetheless, I argue that Vattimo’s renunciation can still serve as a useful starting point for contemporary political thinking. What Vattimo’s logic shows is that we can enhance the moral standing of democracy by decisively detaching its practices and institutions from historical artifacts of political violence. 相似文献
978.
Jason Scofield Maria Hernandez-Reif Anna Beth Keith 《Journal of cognition and development》2013,14(4):306-333
Two studies used a new paradigm to examine preschool children's (i.e., 2-, 3-, 4-, and 5-year-olds) word learning across multiple sense modalities. In Study 1 (n = 60), children heard a word for an object that they touched but did not see, while word learning was examined using objects that were seen but not touched. In Study 2 (n = 60), children heard a word for an object that they saw but did not touch, while word learning was examined using objects that were touched but not seen. Findings from both studies revealed that children were able to learn words by coordinating information across multiple sense modalities and that word learning improved with age. These findings are discussed in terms of E. J. Gibson's differentiation theory (1969, 1988). 相似文献
979.
980.