全文获取类型
收费全文 | 10380篇 |
免费 | 166篇 |
国内免费 | 1篇 |
专业分类
10547篇 |
出版年
2020年 | 154篇 |
2019年 | 165篇 |
2018年 | 251篇 |
2017年 | 238篇 |
2016年 | 241篇 |
2015年 | 159篇 |
2014年 | 212篇 |
2013年 | 960篇 |
2012年 | 303篇 |
2011年 | 329篇 |
2010年 | 211篇 |
2009年 | 255篇 |
2008年 | 269篇 |
2007年 | 310篇 |
2006年 | 248篇 |
2005年 | 238篇 |
2004年 | 236篇 |
2003年 | 219篇 |
2002年 | 238篇 |
2001年 | 211篇 |
2000年 | 163篇 |
1999年 | 154篇 |
1998年 | 129篇 |
1997年 | 148篇 |
1996年 | 121篇 |
1995年 | 115篇 |
1994年 | 113篇 |
1993年 | 151篇 |
1992年 | 152篇 |
1991年 | 142篇 |
1990年 | 126篇 |
1989年 | 129篇 |
1988年 | 132篇 |
1987年 | 135篇 |
1986年 | 113篇 |
1985年 | 121篇 |
1984年 | 139篇 |
1983年 | 126篇 |
1982年 | 142篇 |
1981年 | 122篇 |
1980年 | 123篇 |
1979年 | 135篇 |
1978年 | 160篇 |
1977年 | 146篇 |
1976年 | 127篇 |
1975年 | 170篇 |
1974年 | 144篇 |
1973年 | 115篇 |
1972年 | 105篇 |
1971年 | 112篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
211.
In three experiments, subjects were asked to memorize related phrase pairs and then to produce one of these phrases from a cue. In Experiment 1, it was found that both memorization times and response latencies increased with the number of words that differed between the phrases. In Experiment 2 and 3, it was shown that the presence of a strong modifying or semantic relationship between words in one phrase influenced both memorization time and response latency when those same words were contrasted between the two phrases. The implications of the results for models of storage, retrieval, and planning of speech are considered. 相似文献
212.
This study was designed to determine (a) what dimensions underlie emotional reactions to news events, (b) whether these dimensions are independent, (c) whether reactions to major news events are similar for different groups of people, and (d) whether a simple method could be developed for evaluating emotional reactions to news events. Subjects rated the similarity of their emotional reactions to 20 page-one newspaper stories in a paired-comparison task. The data were multidimensionally scaled using the KYST computer program. Two dimensions emerged that accounted for 89% of the judgment variance: pleasure/displeasure and degree of arousal. Interpretation of these dimensions was verified using a semantic differential task. The two dimensions were not independent. They were related by a U-shaped function: News events farther from evaluative neutrality were judged more arousing. A second study with 40 news events and a different subject population replicated these findings. Subjects' ratings of news events on three scales (happy, important, and exciting) were sufficient to recover the KYST dimensions. The theoretical and practical implications of these. results are discussed. 相似文献
213.
214.
It has been recently shown that in the early stages of erection, the human penis undergoes a substantial length change that is not detected using circumferential measurement devices. The present report introduces a relatively simple device that can assess changes in both length and circumference. The device promises to provide a low-cost alternative to the precision and sensitivity associated with plethysmography. 相似文献
215.
Effects of household sex composition on the salience of one's gender in the spontaneous self-concept
William J McGuire Claire V McGuire Ward Winton 《Journal of experimental social psychology》1979,15(1):77-90
It was hypothesized that being a boy or a girl becomes more salient in a child's self-concept to the extent the other sex numerically predominates in the child's household. This prediction was based upon an information-processing, distinctiveness postulate that a person contemplating a complex stimulus (such as the self) selectively notices and encodes its more distinctive, information-rich aspects. The spontaneous self-concept elicited by nondirective “Tell us about yourself” interviews of 560 school children were scored for spontaneous mention of one's gender. As predicted, boys spontaneously mentioned their maleness more often when they came from households where females were in the majority; girls mentioned their femaleness more often when from households with male majorities; boys mentioned their maleness more often when from father-absent than from father-present homes. Incidental findings are that gender is more salient in the negation self-concept (“Tell us what you are not”) than in the affirmation self-concept (“Tell us about yourself”) especially for girls and that gender becomes increasingly salient as the child grows older. 相似文献
216.
R O Straub M S Seidenberg T G Bever H S Terrace 《Journal of the experimental analysis of behavior》1979,32(2):137-148
Three pigeons learned to peck four colors in a particular sequence, regardless of how these colors were positioned on four response keys and without feedback following each response. This demonstrates that serial learning is possible in subprimate animals. 相似文献
217.
218.
William W. Rozeboom 《Psychometrika》1979,44(3):289-296
Many authors have demonstrated for idealized item configurations that equal item weights are often virtually as good for a particular predictive purpose as the item weights that are theoretically optimal. What has not been heretofore clear, however, is what happens to the similarity between weighted and unweighted composites of the same items when the item configuration's variance structure is complex. 相似文献
219.
JOHN O. NELSON 《Philosophical Investigations》1979,2(1):1-8
We must agree, I think, with Frank Ebersole that there is something preposterous in supposing that the God of religious belief, the God who handed down tablets to Moses on Mt. Sinai, etc., should be proven to exist by the ontological argument. Indeed, when we place the one, the ontological argument, by the side of the other, the God of religious belief, there seems hardly to be any connection between them. But if we agree to this perception of things, what sense can we make of the ontological argument, for example, the “pull” that it sometimes exerts on us? 相似文献
220.
William F. Muhs Gary E. Popp Herman F. Patterson 《Journal of counseling and development : JCD》1979,58(1):20-24
From a review of literature and an examination of data from the Counseling Services at the University of Texas - El Paso, the authors conclude that Mexican-American students place more emphasis on cooperation and group achievement than on individual achievement, and that the education of Mexican Americans may be enhanced when teachers properly reinforce “successful behavior.” In addition, it seems that problems may arise in using U.S.-based theories of “democratic” leadership styles because the Mexican-American culture places more emphasis on traditional leadership roles. 相似文献