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   159739篇
  免费   7410篇
  国内免费   155篇
  167304篇
  2021年   1478篇
  2020年   2760篇
  2019年   3413篇
  2018年   3347篇
  2017年   3804篇
  2016年   4498篇
  2015年   3901篇
  2014年   4777篇
  2013年   23361篇
  2012年   4111篇
  2011年   3078篇
  2010年   3663篇
  2009年   4653篇
  2008年   3368篇
  2007年   2860篇
  2006年   3609篇
  2005年   3617篇
  2004年   3132篇
  2003年   2777篇
  2002年   2578篇
  2001年   2690篇
  2000年   2547篇
  1999年   2777篇
  1998年   2765篇
  1997年   2611篇
  1996年   2541篇
  1995年   2367篇
  1994年   2336篇
  1993年   2297篇
  1992年   2279篇
  1991年   2135篇
  1990年   1970篇
  1989年   1925篇
  1988年   1891篇
  1987年   1944篇
  1986年   1913篇
  1985年   2150篇
  1984年   2330篇
  1983年   2153篇
  1982年   2308篇
  1981年   2278篇
  1980年   2118篇
  1979年   1978篇
  1978年   2053篇
  1977年   2047篇
  1976年   1839篇
  1975年   1813篇
  1974年   1836篇
  1973年   1678篇
  1972年   1306篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
This study examines the incidence of reports of psychic phenomena and associated beliefs both before and after the near-death experience (NDE). The near-death experiencers interviewed reported no more psychic phenomena before the NDE than the general population. There was a statistically significant increase following the NDE in the incidence of 14 of 15 items examined.  相似文献   
972.
973.
This work has received financial support from FONDECYT (Project 1111-88). The authors also acknowledge the helpful comments of Dr. Bruce Cassels.  相似文献   
974.
975.
Four experiments in which subjects learned to control two versions of a complex simulated process control task show that verbalizable knowledge of procedures used to perform these tasks is very limited and is acquired late in learning. Individual learning curves associated with these tasks showed sudden improvements in performance, which were not accompanied by a similar increase in verbalizable knowledge. It was also found that verbal instructions consisting of exemplar memorization, strategies for rule induction, simple heuristics, and experts' instructions were all effective in enhancing novice subjects' performance. A theoretical framework is proposed in which subjects draw on two separate but interacting knowledge structures to perform these tasks. One knowledge structure is based on memory for past experiences (close analogies), and the other is based on one's current mental model of the task. Implicit sets of competing rules that control response selection are derived from both sources of knowledge. It is suggested that dissociations between task performance and verbalizing occur because memory-based processing tends to have more control over response selection because of its greater specificity, whereas a mental model tends to be the preferred mode for verbal reporting because of its greater accessibility.  相似文献   
976.
977.
Competencies in social and life skills of a group of students expecting to leave school at the end of Grade 10 in Australia is compared with groups expecting to continue. Academic performance and skills were also assessed. The results of the study indicated that the potential early school-leavers were disadvantaged both socio-economically and academically. But, surprisingly, the findings indicated that they were not significantly different from the other two groups of students targeted in the study in terms of their social and life skills. The results imply that potential early leavers in school populations may be unnecessarily disadvantaged because school programmes, in concentrating on a narrow range of cognitive skills, do not build on personal competency skills already possessed by students of all levels of ability. Whilst this is the case, potential early school-leavers will be likely to continue to be disaffected and disadvantaged educationally.  相似文献   
978.
Little research has been conducted on the university admissions interview, and with increasing selection ratios there has been a tendency for universities to dispense with interviews altogether. This paper argues for a re-assertion of the interview as a valuable component of the admissions procedure, not necessarily to improve institutional decision-making but for the guidance and personal decision-making of candidates. The rationale for treating admissions interviews as opportunities for counselling are reviewed, and the advantages for both candidates and institutions are outlined.  相似文献   
979.
980.
Gary D. Levy 《Sex roles》1989,21(5-6):305-324
Eighty-three 37-92-month-old children's gender schematization and recognition memories for gender-typed content were assessed. Verbal labeling of stimuli and age were positively associated with children's memories. Highly gender schematic children displayed better memories for gender-role consistent information and committed more gender transformation errors than less gender schematic children. Interactions between children's gender schematization, age, and labeling condition were observed. Labeling of stimuli facilitated less schematic children's memories for gender-role consistent information. Gender schematization was positively associated with younger children's memories, suggesting younger children's memories are more strongly mediated by gender schematization than older children's. Results support the position that studies of gender schema development require an integrated approach recognizing individual and developmental differences in gender schematic processing.Completion of this project was facilitated by funds received while the author was a National Institute of Mental Health Postdoctoral Fellow at the University of Denver: Grant 5T32 MH 15780-09. This support is gratefully acknowledged. An earlier version of this paper was presented at the Conference on Human Development, Charleston, South Carolina, 1988. The author would like to thank the faculty and staff of the Tiny Tot, Jack & Jill, Little Learners II, Plymouth and Upstate preschools for their assistance and cooperation. The author wishes to recognize James Aber, Rosanne David, Melisa Shack, and Susan Zigelbaum for their exceptional service in conducting the project; and would also like to thank Joan Barth, D. Bruce Carter, Gail S. Goodman, Carol L. Martin, William J. Meyer, Kathy Park, Ralph J. Roberts, Jaipaul L. Roopnarine, Margaret L. Signorella, and the anonymous reviewers for their comments and suggestions on earlier drafts of this article.  相似文献   
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