全文获取类型
收费全文 | 54865篇 |
免费 | 2087篇 |
国内免费 | 19篇 |
出版年
2019年 | 590篇 |
2018年 | 867篇 |
2017年 | 850篇 |
2016年 | 951篇 |
2015年 | 707篇 |
2014年 | 820篇 |
2013年 | 4948篇 |
2012年 | 1414篇 |
2011年 | 1469篇 |
2010年 | 928篇 |
2009年 | 880篇 |
2008年 | 1285篇 |
2007年 | 1251篇 |
2006年 | 1128篇 |
2005年 | 1002篇 |
2004年 | 947篇 |
2003年 | 979篇 |
2002年 | 969篇 |
2001年 | 1763篇 |
2000年 | 1675篇 |
1999年 | 1291篇 |
1998年 | 561篇 |
1996年 | 666篇 |
1995年 | 631篇 |
1994年 | 597篇 |
1993年 | 570篇 |
1992年 | 1254篇 |
1991年 | 1158篇 |
1990年 | 1145篇 |
1989年 | 1032篇 |
1988年 | 1052篇 |
1987年 | 996篇 |
1986年 | 1017篇 |
1985年 | 996篇 |
1984年 | 859篇 |
1983年 | 720篇 |
1982年 | 574篇 |
1981年 | 588篇 |
1979年 | 860篇 |
1978年 | 650篇 |
1975年 | 763篇 |
1974年 | 809篇 |
1973年 | 893篇 |
1972年 | 803篇 |
1971年 | 735篇 |
1970年 | 687篇 |
1969年 | 642篇 |
1968年 | 836篇 |
1967年 | 709篇 |
1966年 | 677篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
911.
912.
The Psychological Record - By avoiding the confound between the physical and semantic properties of words, it was possible to demonstrate the effects and aftereffects of semantic satiation.... 相似文献
913.
Intellectual functioning and aggression 总被引:2,自引:0,他引:2
In a 22-year study, data were collected on aggressiveness and intellectual functioning in more than 600 subjects, their parents, and their children. Both aggression and intellectual functioning are reasonably stable in a subject's lifetime and perpetuate themselves across generations and within marriage pairs. Aggression in childhood was shown to interfere with the development of intellectual functioning and to be predictive of poorer intellectual achievement as an adult. Early IQ was related to early subject aggression but did not predict changes in aggression after age 8. On the other hand, differences between early IQ and intellectual achievement in middle adulthood were predictable from early aggressive behavior. A dual-process model was offered to explain the relation between intellectual functioning and aggressive behavior. We hypothesized that low intelligence makes the learning of aggressive responses more likely at an early age, and this aggressive behavior makes continued intellectual development more difficult. 相似文献
914.
915.
W N Friedrich C K Smith S D Harrison K A Colwell A K Davis A Fefer 《Psychological reports》1987,61(1):127-130
916.
917.
This study examines the effect of different behavioral conditions on patterns of correlation between regional cerebral metabolic rates for glucose. Cerebral glucose metabolism was determined with positron emission tomography and (11C)-deoxyglucose in 29 normal subjects between the ages of 23 and 55. Seventeen subjects were studied in an unstimulated (resting) condition and 12 subjects during a phoneme monitoring language stimulation. Partial correlation coefficients, controlling for whole brain glucose metabolism, were calculated for pairs of metabolic rates in 14 cortical and 2 subcortical regions. Both stimulated and unstimulated subjects showed statistically significant correlations between left and right hemisphere homologs. The stimulated subjects also showed significant within-hemisphere correlations between left but not right hemisphere regions. These included left perisylvian regions classically associated with language functions (left inferior frontal, left superior temporal and left transverse temporal cortical regions) as well as other regions. Significant correlations between left regions and a right superior temporal region were also found. In general, these findings show a pattern of cross-hemisphere symmetry at rest and of hemisphere asymmetry during stimulation. Moreover, the asymmetry observed during stimulation appears to be superimposed upon a pattern of cross-hemisphere symmetry similar to that observed in the unstimulated state. 相似文献
918.
Processing of lexical ambiguities in aphasia 总被引:2,自引:2,他引:0
Wernicke's and Broca's aphasics performed a lexical decision task wherein they had to decide whether the third word of an auditorily presented triplet series of words was "real" or not. The first and third words of each triplet were related to one, both, or neither meaning of the second word which was semantically ambiguous. The performance pattern of the Wernicke's aphasics was similar to that of normals. They showed selective access to different meanings of the ambiguous words, as demonstrated by the fact that the context provided by the first word affected semantic facilitation on the third word. In contrast, Broca's aphasics showed no semantic facilitation in any priming condition. These results are consistent with previous findings, suggesting that semantic representations may be largely spared in Wernicke's aphasics. The failure of the Broca's aphasics to demonstrate facilitation is consistent with the view that they have a processing deficit in automatically accessing the lexical representation of words. 相似文献
919.
Lexical contribution to nonword-repetition effects: Evidence from event-related potentials 总被引:1,自引:0,他引:1
Two experiments investigated the modulation of event-related potentials (ERPs) by the repetition of orthographically legal and illegal nonwords. In Experiment 1, subjects silently counted occasional words against a background of nonwords, a proportion of which were repetitions of an immediately preceding legal or illegal item. ERPs to repeated legal items showed a sustained, topographically diffuse, positive-going shift. In contrast, repeated illegal nonwords gave rise to ERPs showing a smaller and temporally more restricted positive-going modulation. In an attempt to equalize depth of processing across legal and illegal nonwords, subjects in Experiment 2 were required to count items containing a nonalphabetic character against the same background of nonword items. ERPs to repeated legal items showed a modulation similar to, although smaller than, that found in Experiment I, but no effects of repetition were observed in the ERPs to the illegal nonwords. It was concluded that the effects of repeating nonwords, at least as manifested in concurrently recorded ERPs, differ as a consequence of whether items can access lexical memory, and that this is inconsistent with the attribution of such effects solely to the operation of episodic memory processes. 相似文献
920.
To be pertinent to democratic practice, collective choice functions need not apply to all possible constellations of individual preference, but only to those that are humanly possible in an appropriate sense. The present paper develops a theory of humanly possible preference within the context of the mathematical theory of learning. The theory of preference is then exploited in an attempt to resolve Arrow's voting paradox through restriction of the domain of majoritarian choice functions. 相似文献