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   64857篇
  免费   2464篇
  国内免费   17篇
  2019年   749篇
  2018年   1062篇
  2017年   1027篇
  2016年   1104篇
  2015年   793篇
  2014年   980篇
  2013年   5535篇
  2012年   1733篇
  2011年   1838篇
  2010年   1136篇
  2009年   1117篇
  2008年   1666篇
  2007年   1556篇
  2006年   1467篇
  2005年   1278篇
  2004年   1241篇
  2003年   1221篇
  2002年   1209篇
  2001年   1997篇
  2000年   1878篇
  1999年   1450篇
  1998年   734篇
  1996年   749篇
  1995年   718篇
  1994年   698篇
  1992年   1329篇
  1991年   1251篇
  1990年   1211篇
  1989年   1159篇
  1988年   1157篇
  1987年   1100篇
  1986年   1132篇
  1985年   1157篇
  1984年   994篇
  1983年   867篇
  1982年   714篇
  1981年   708篇
  1979年   1010篇
  1978年   754篇
  1976年   688篇
  1975年   904篇
  1974年   938篇
  1973年   1011篇
  1972年   905篇
  1971年   807篇
  1970年   768篇
  1969年   772篇
  1968年   942篇
  1967年   822篇
  1966年   805篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
A contextual approach to narcissism is developed in which theology is seen to articulate simultaneously with psychological needs and cultural values. Some implications of the psychology of the self for theology and culture are discussed in this framework.The author wishes to express his gratitude to Dr. Larry K. Graham for his comments on an earlier version of this paper.Dr. Fallot is a psychologist on the staff of the Student Counseling Service, University of Illinois at Chicago, P.O. Box 4348, Chicago, Il. 60680.  相似文献   
942.
943.
Scores on the Beck Depression Inventory (BDI) were periodically obtained from the roommates of college students who exhibited a persistent mild depression over a 3-month period. For comparative purposes, BDI scores were also obtained from roommates of individuals who were transiently depressed and from subjects with nondepressed roommates. In comparison with control subjects, the roommates of persistently depressed persons displayed a progressive increase in BDI score over the course of the study.  相似文献   
944.
Pigeons' not pecking or pecking constituted choice between a delayed, large reinforcer and an immediate, small reinforcer (self-control) and at other times between a delayed reinforcer and no reinforcer (omission). Both a tone and a keylight were tested as choice signals, and the delayed reinforcer was either response independent or response dependent. Pigeons pecked during the choice signals on over 95% of the trials in the self-control procedure, and pecked during the choice signals on over 75% of the trials in the omission procedure. Consistent pecking was observed with either the tone or the keylight as a choice signal, with the exception that a tone paired with a response-independent delayed reinforcer did not maintain pecking in the omission procedure. Pigeons pecked during more choice signals when delayed reinforcers were response dependent than when the delayed reinforcers were response independent. These results indicate that Pavlovian conditioning influences self-control experiments, especially in single-key procedures.  相似文献   
945.
946.
947.
The following survey is intended to demonstrate and discuss some principle problems of biomagnetism and the application in clinical fields. The development of special technical parameters especially by the SQUID method is initiating new possibilities of research and completing the neurobiologically determinated basis and conditions of neuropsychiatric disorders. The Magnetoencephalography (MEG) will be represent an important role of a new functional diagnostic method.  相似文献   
948.
We present four cases of Prader-Willi syndrome. Two of them have an abnormality of a chromosome 15, the other both show different chromosomal abnormalities. Translocations or deletions were found recently in the bands 15q11/12 in about 60% of the cases of Prader-Willi syndrome. The consequences for diagnosis, symptomatology and genetic counselling of the syndrome are discussed.  相似文献   
949.
950.
Gender differences across age in motor performance a meta-analysis   总被引:3,自引:0,他引:3  
  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