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   46356篇
  免费   2076篇
  国内免费   33篇
  2020年   552篇
  2019年   647篇
  2018年   930篇
  2017年   894篇
  2016年   992篇
  2015年   696篇
  2014年   813篇
  2013年   3638篇
  2012年   1526篇
  2011年   1601篇
  2010年   928篇
  2009年   975篇
  2008年   1281篇
  2007年   1271篇
  2006年   1127篇
  2005年   976篇
  2004年   962篇
  2003年   896篇
  2002年   907篇
  2001年   1644篇
  2000年   1619篇
  1999年   1160篇
  1998年   485篇
  1997年   458篇
  1995年   434篇
  1992年   943篇
  1991年   862篇
  1990年   863篇
  1989年   821篇
  1988年   813篇
  1987年   734篇
  1986年   753篇
  1985年   797篇
  1984年   641篇
  1983年   577篇
  1982年   425篇
  1979年   640篇
  1978年   475篇
  1977年   424篇
  1976年   428篇
  1975年   537篇
  1974年   655篇
  1973年   636篇
  1972年   587篇
  1971年   495篇
  1970年   457篇
  1969年   517篇
  1968年   598篇
  1967年   514篇
  1966年   519篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
83.
84.
In two experiments, right-handed men and women were tested for ear differences in report of dichotically presented digits, with their heads straight ahead, turned 90 degrees to the left, and turned 90 degrees to the right. In Experiment 1, head turn was controlled simply by asking the subjects to fixate an appropriately located point; a right-ear advantage occurred under all conditions of head turn among the men, but only in the head-straight condition among the women. In Experiment 2, head turn was controlled by having the subjects direct a flashlight attached to their heads toward the fixation point. This eliminated the right-ear advantage under all head conditions for the men, but for the women the right-ear advantage was, if anything, more pronounced when their heads were turned than when straight. These results suggest that auditory asymmetry depends in part on whether space is perceived as divided into left and right sides, and in part of the balance between spatial and verbal requirements. Both factors, and the asymmetry itself, may interact with sex.  相似文献   
85.
We carried out a randomized controlled trial to determine whether an intensive intervention after a suicide attempt could decrease by half the risk of a repeat attempt in the following two years. After initial assessment and randomization, experimental subjects attended 18 therapy appointments over one year, including one home visit, and measures to improve attendance. Control subjects received the usual care. Of 63 experimental subjects, 35% made a repeat attempt, and so did 30% of 63 control subjects. The study had a 99% power to detect the desired decrease of risk (30% to 15%). Clearly, the intervention did not achieve its objective.  相似文献   
86.
87.
Using data from interviews with professional women on their work-related stress and coping processes, the author identified those who were good and poor at coping.  相似文献   
88.
Differences in recall ability between immediate serial recall of auditorily and visually presented verbal material have traditionally been considered restricted to the end of to-be-recalled lists, the recency section of the serial position curve (e.g., Crowder & Morton, 1969). Later studies showed that--under certain circumstances--differences in recall between the two modalities can be observed across the whole of the list (Frankish, 1985). However in all these studies the advantage observed is for recall of material presented in the auditorily modality. Six separate conditions across four experiments demonstrate that a visual advantage can be obtained with serial recall if participants are required to recall the list in two distinct sections using serial recall. Judged on a list-wide basis, the visual advantage is of equivalent size to the auditory advantage of the classical modality effect. The results demonstrate that differences in representation of auditory and visual verbal material in short-term memory persist beyond lexical and phonological categorization and are problematic for current theories of the modality effect.  相似文献   
89.
90.
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