首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   41130篇
  免费   833篇
  国内免费   5篇
  41968篇
  2019年   289篇
  2018年   3712篇
  2017年   3051篇
  2016年   2524篇
  2015年   420篇
  2014年   442篇
  2013年   1884篇
  2012年   1113篇
  2011年   2976篇
  2010年   2823篇
  2009年   1870篇
  2008年   2203篇
  2007年   2707篇
  2006年   574篇
  2005年   689篇
  2004年   672篇
  2003年   585篇
  2002年   554篇
  2001年   560篇
  2000年   621篇
  1999年   425篇
  1998年   312篇
  1997年   270篇
  1996年   248篇
  1995年   239篇
  1993年   238篇
  1992年   364篇
  1991年   353篇
  1990年   366篇
  1989年   345篇
  1988年   333篇
  1987年   308篇
  1986年   309篇
  1985年   318篇
  1984年   271篇
  1983年   285篇
  1982年   246篇
  1980年   239篇
  1979年   318篇
  1978年   314篇
  1977年   241篇
  1976年   228篇
  1975年   311篇
  1974年   321篇
  1973年   323篇
  1972年   272篇
  1971年   265篇
  1968年   279篇
  1967年   271篇
  1966年   237篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
971.
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   
972.
An attentional model of fear-based behavior is proposed and a study that tested the model is reported. It was predicted that among subjects with moderate fear of snakes, heightened self-attention during an approach attempt would cause increased awareness of existing anxiety, followed by one of two courses of events: Subjects who believed that they could do the behavior in spite of their fear were expected to redirect their attention to the behavior--goal comparison and exhibit no behavioral deficit. Subjects who doubted their ability to do the behavior were expected to divert their attention from the behavior--goal comparison and to withdraw behaviorally from the approach attempt. The results of the study support this reasoning. Discussion centers on relationships between the proposed model and previous theory.  相似文献   
973.
Temporal control of behavior and the power law   总被引:9,自引:9,他引:0       下载免费PDF全文
The performance of rats and pigeons under fixed-interval schedules was studied in two experiments. The duration of postreinforcement pause was a declining proportion of fixed-interval duration. For pigeons this was true both when the duration of the reinforcer was fixed and when it was increased in direct proportion to increases in fixed-interval duration; the longer reinforcer durations did, however, lengthen the postreinforcement pause at higher schedule values. A quantitative analysis of data from Experiments 1 and 2 and from other studies showed that fractional exponent power functions described the relationship between postreinforcement pause and fixed-interval value; similar functions have previously been observed in studies of temporal differentiation. It was concluded that power functions reflect a direct causal, rather than artifactual, relationship between performance and the temporal requirements of reinforcement schedules.  相似文献   
974.
The Rotter I-E scale was administered to college juniors in education under five different instructional sets. Subjects were asked to complete it (a) as they would ordinarily (self-perception), (b) as they believed an average person of the same sex would, (c) as an average person of the opposite sex would, (d) as an ideal person of the same sex would, and (e) as an ideal person of the opposite sex would. As hypothesized, subjects saw the ideal person of both sexes as significantly more internal than themselves, while they saw the average person of both sexes as more external than themselves. These results suggest the general desirability of being perceived as internally oriented.  相似文献   
975.
Three types of oculomotor programming disturbances are described in patients with the dementia syndrome. This report describes two of these abnormalities, poorly regulated gaze patterns and a programming type of gaze perseveration. All patients showed poorly regulated gaze patterns in contrast to the normal controls, whereas on the whole only the moderately affected patients showed the programming type of gaze perseveration. The third type of oculomotor programming disturbance is efferent perseveration of gaze (a hypokinetic, "staring" type of gaze pattern) and can be seen with severe dementia. The possible significance of these findings is discussed.  相似文献   
976.
57 female subjects participated in a study in which perceptual reactance was assessed by the kinesthetic figural aftereffects test. Subjects identified as augmenters were quicker than reducers on a disjunctive reaction time task and a significant interactive effect was found on a paired-associate task. Augmenters performed better on a similar list while reducers were more effective on a dissimilar list.  相似文献   
977.
As evidence for an hypothesis that pupil size plays an important role in nonverbal communication, Hess (1975) has reported that adults draw in appropriately sized pupils on his happy and angry faces task. However, he did not report a statistical test of his data. In this study, we replicated Hess' research and found congruent with his hypothesis that college students (n = 223) draw in significantly larger pupils on the happy face.  相似文献   
978.
56 high school students were administered the Group Embedded Figures Test and the Pictures of Facial Affect. A low Pearson product-moment correlation of .02 was obtained between the measures. Data indicated that field-dependent and field-independent individuals were not signficantly different in their skills of labeling pictures of facial affect.  相似文献   
979.
980.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号