全文获取类型
收费全文 | 89853篇 |
免费 | 1810篇 |
国内免费 | 7篇 |
专业分类
91670篇 |
出版年
2019年 | 1065篇 |
2018年 | 1425篇 |
2017年 | 1428篇 |
2016年 | 1568篇 |
2015年 | 1133篇 |
2014年 | 1358篇 |
2013年 | 7311篇 |
2012年 | 2456篇 |
2011年 | 2623篇 |
2010年 | 1670篇 |
2009年 | 1608篇 |
2008年 | 2382篇 |
2007年 | 2314篇 |
2006年 | 2130篇 |
2005年 | 1855篇 |
2004年 | 1735篇 |
2003年 | 1693篇 |
2002年 | 1764篇 |
2001年 | 2776篇 |
2000年 | 2695篇 |
1999年 | 2073篇 |
1998年 | 987篇 |
1997年 | 900篇 |
1996年 | 1019篇 |
1995年 | 938篇 |
1994年 | 896篇 |
1993年 | 909篇 |
1992年 | 1884篇 |
1991年 | 1734篇 |
1990年 | 1711篇 |
1989年 | 1554篇 |
1988年 | 1515篇 |
1987年 | 1497篇 |
1986年 | 1528篇 |
1985年 | 1552篇 |
1984年 | 1349篇 |
1983年 | 1188篇 |
1981年 | 898篇 |
1979年 | 1361篇 |
1978年 | 1000篇 |
1975年 | 1179篇 |
1974年 | 1216篇 |
1973年 | 1337篇 |
1972年 | 1203篇 |
1971年 | 1081篇 |
1970年 | 991篇 |
1969年 | 997篇 |
1968年 | 1253篇 |
1967年 | 1098篇 |
1966年 | 998篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
801.
Three samples, each divided into males and females, were asked to indicate to what degree some job characteristics were important to them. The job characteristics represented both intrinsic and extrinsic factors. In the first sample (40 male and 44 female university students) there was no sex difference in job orientation. Both selected the intrinsic factors more than the extrinsic factors. There was also no sex difference in the second sample, which consisted of 68 male and 33 female public school teachers. They, however, stressed as many intrinsic factors as extrinsic. The general results of the third sample showed significant sex differences. The sample of 259 male and 143 female employees represented a technical division of a large service-oriented organization. Education and job level were significantly different for the two subgroups. When these two variables were controlled for a sample of clerks and of first-level supervisors, no sex difference appeared in job orientation. The results also showed that the higher the job level, the more intrinsically-oriented the employees were regardless of their sex. 相似文献
802.
803.
804.
805.
E. J. Fjerdincstad 《Scandinavian journal of psychology》1969,10(1):220-224
F jerdingstad , E. J. Chemical transfer of alternation training in the Skinner box. Scand. J. Psychol ., 1969, 10 , 220–224.—In six individual experiments one group of recipient mice was injected with brain extract from rat donors trained to alternate between bars in a Skinner box; another group was injected with extract from donors reinforced for pressing either bar irrespective of choice. During testing the recipients of 'alternation extract' showed a significantly higher tendency to alternate. 相似文献
806.
Scapegoating: an alternative to role differentiation 总被引:1,自引:0,他引:1
P J Burke 《Sociometry》1969,32(2):159-168
807.
808.
As an extension to an earlier study on typing, an experiment was carried out on skilled touch typists in which they were asked to type texts that differed in word structure and word length. It was predicted from certain assumptions about the reading process that there should be significant effects of structure, length and their interaction. These predictions were confirmed. 相似文献
809.
J. Dutch 《Quarterly journal of experimental psychology (2006)》1969,21(1):63-66
Two groups were tested for spontaneous alternation using massed and spaced trials but alternation rate was not above chance level. Two experiments then examined the use of visual stimuli as pacers for an approach response. The results indicate that subjects responded to complexity and that complexity may be a more effective pacer than novelty. 相似文献
810.
J. Oehler L. Pickenhain F. Klingberg 《Integrative psychological & behavioral science》1969,4(3):187-198
Electrodes were implanted in the brains of 27 freelymoving rats and the bioelectrical activity of cerebellar cortical structures (lobus simplex, tuber verrais, lobus ansiformis, crus II) and the dentate nucleus was measured simultaneously with the activity of the cerebral cortex and dorsal hippocampus and respiratory rate and motor activity. Different behavioral states were produced by habituation procedures and by elaborating conditional avoidance reflexes to light-flash or click series. In addition, startle reflexes to acoustic stimuli were used to evaluate behavioral state. The following conclusions could be drawn: 1) in the awake rat the various cerebellar structures have clearly distinguishable bioelectrical activity patterns; 2) changes in these patterns depend on the actual behavioral state of the animal; 3) this dependence upon behavior is especially clear in crus II, one of the projection zones of the tactile and proprioceptive afferent nerves in the cerebellar cortex. The changes in the electrocerebellogram of the unrestrained rat may be used as an indicator of the behavioral state of the animal. 相似文献