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   174010篇
  免费   7942篇
  国内免费   158篇
  2020年   2774篇
  2019年   3436篇
  2018年   3519篇
  2017年   3939篇
  2016年   4601篇
  2015年   3908篇
  2014年   4792篇
  2013年   23410篇
  2012年   4501篇
  2011年   3561篇
  2010年   3858篇
  2009年   4744篇
  2008年   3856篇
  2007年   3344篇
  2006年   3937篇
  2005年   3923篇
  2004年   3441篇
  2003年   3092篇
  2002年   2883篇
  2001年   3463篇
  2000年   3300篇
  1999年   3253篇
  1998年   2821篇
  1997年   2672篇
  1996年   2603篇
  1995年   2420篇
  1994年   2392篇
  1993年   2338篇
  1992年   2704篇
  1991年   2540篇
  1990年   2400篇
  1989年   2298篇
  1988年   2268篇
  1987年   2264篇
  1986年   2283篇
  1985年   2480篇
  1984年   2575篇
  1983年   2347篇
  1982年   2371篇
  1981年   2356篇
  1980年   2200篇
  1979年   2262篇
  1978年   2195篇
  1977年   2164篇
  1976年   1979篇
  1975年   2062篇
  1974年   2119篇
  1973年   2017篇
  1972年   1617篇
  1971年   1547篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
This study examined the influence of various group diversity dimensions on collaborative creativity related to the healthcare system. Research findings on the association between diversity and brainstorming performance has been mixed. Diversity that increases cognitive stimulation or promotes elaboration has been shown to increase group performance. Participants exchanged ideas, replied, and elaborated using an electronic discussion board in an asynchronous fashion in groups of five over a period of 4 weeks. The groups varied in diversity of ethnicity, gender, age, and political orientation, but participants were not made aware of this diversity. Age and gender diversity were related to lower levels of replying to ideas and lower idea novelty but political diversity was related to increased replies and novelty. If a topic engages people with different perspectives to actively respond to others’ ideas, this can increase the creative potential of idea sharing in groups. Political or value-based diversity has the potential for creative solutions if the other participants’ political or value-based identities are not made salient.  相似文献   
102.
103.
We investigated eye‐movements during preschool children's pictorial recall of seen objects. Thirteen 3‐ to 4‐year‐old children completed a perceptual encoding and a pictorial recall task. First, they were exposed to 16 pictorial objects, which were positioned in one of four distinct areas on the computer screen. Subsequently, they had to recall these pictorial objects from memory in order to respond to specific questions about visual details. We found that children spent more time fixating the areas in which the pictorial objects were previously displayed. We conclude that as early as age 3–4 years old, children show specific eye‐movements when they recall pictorial contents of previously seen objects.  相似文献   
104.
105.
106.
107.
108.
109.
Previous research demonstrates that older adults are poor at dual tasking, but there is less agreement on whether their decrement is worse than that predicted from single-task performance. This study investigated whether task domain moderates dual-task costs in old age. In two experiments, young and older adults retrieved either previously learned associates (episodic retrieval) or overlearned category members (semantic retrieval) under single or working-memory load conditions, using cued recall (Experiment 1) and recognition (Experiment 2) procedures. In both experiments the proportional costs of dual tasking were age invariant for semantic retrieval but were particularly marked for episodic retrieval, although the size of the age effect was reduced in recognition compared to cued recall. The data suggest that age effects in dual tasking may be domain specific.  相似文献   
110.
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