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   15755篇
  免费   701篇
  国内免费   7篇
  2020年   174篇
  2019年   183篇
  2018年   283篇
  2017年   247篇
  2016年   287篇
  2015年   215篇
  2014年   267篇
  2013年   1133篇
  2012年   496篇
  2011年   445篇
  2010年   312篇
  2009年   285篇
  2008年   419篇
  2007年   434篇
  2006年   379篇
  2005年   371篇
  2004年   318篇
  2003年   285篇
  2002年   309篇
  2001年   683篇
  2000年   671篇
  1999年   454篇
  1998年   170篇
  1997年   163篇
  1996年   163篇
  1995年   136篇
  1992年   363篇
  1991年   345篇
  1990年   358篇
  1989年   305篇
  1988年   288篇
  1987年   288篇
  1986年   262篇
  1985年   266篇
  1984年   241篇
  1983年   206篇
  1982年   158篇
  1979年   225篇
  1978年   176篇
  1977年   151篇
  1975年   192篇
  1974年   231篇
  1973年   233篇
  1972年   185篇
  1971年   181篇
  1970年   148篇
  1969年   177篇
  1968年   211篇
  1967年   192篇
  1966年   159篇
排序方式: 共有10000条查询结果,搜索用时 156 毫秒
221.
222.
We tested the hypothesis that socially anxious or shy individuals use their anxiety symptoms as a strategy to control attributions made about their performances in social-evaluative settings (i.e., self-handicapping strategies). Specifically, we predicted that trait-socially anxious or shy persons would report more symptoms of social anxiety in an evaluative setting in which anxiety or shyness could serve as an excuse for poor performance than would individuals in (a) an evaluative setting in which shyness was precluded as an excuse or (b) a nonevaluative setting. Furthermore, we predicted that this self-protective pattern of symptom reporting would not occur for individuals who were not trait-socially anxious because these persons would not commonly use such symptoms as a self-handicapping strategy. Results supported these predictions for male subjects, but not for female subjects. Sex differences in the strategic use of shyness are discussed in relation to other research on sex differences in the etiology and correlates of social anxiety.  相似文献   
223.
224.
225.
226.
Flicker fusion frequencies of 48 healthy controls and of 35 alcoholics were measured to detect possible associations between flicker fusion and signs of nonspecific brain damage, the aim of the study. FFF was statistically significantly lower in patients addicted to alcohol than in healthy subjects. Lower flicker fusion frequencies were associated with the severeness of organic psychosis as rated psychopathologically. The hypothesis that addiction to alcohol is a sign of diffuse, nonspecific, organic brain damage was discussed.  相似文献   
227.
228.
229.
16 learning-disabled second- and third-grade students were matched on previous years' achievement scores and grade and assigned at random to experimental and control conditions. Students in the experimental condition were given 8 20-min. sessions of training in test-taking skills particular to the Stanford Achievement Test. Analysis of test scores indicated trained students scored significantly higher on one subtest of a shortened version of the test than students who had not been trained.  相似文献   
230.
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   
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