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   197709篇
  免费   8637篇
  国内免费   157篇
  2020年   2822篇
  2019年   3487篇
  2018年   3945篇
  2017年   4290篇
  2016年   4909篇
  2015年   3962篇
  2014年   4839篇
  2013年   23560篇
  2012年   5502篇
  2011年   4879篇
  2010年   4318篇
  2009年   5000篇
  2008年   4898篇
  2007年   4456篇
  2006年   4757篇
  2005年   4606篇
  2004年   4179篇
  2003年   3762篇
  2002年   3546篇
  2001年   4605篇
  2000年   4342篇
  1999年   3928篇
  1998年   2941篇
  1997年   2749篇
  1996年   2677篇
  1995年   2493篇
  1994年   2458篇
  1993年   2403篇
  1992年   3257篇
  1991年   3052篇
  1990年   2920篇
  1989年   2787篇
  1988年   2741篇
  1987年   2677篇
  1986年   2712篇
  1985年   2955篇
  1984年   2861篇
  1983年   2588篇
  1982年   2466篇
  1981年   2428篇
  1980年   2275篇
  1979年   2634篇
  1978年   2387篇
  1977年   2308篇
  1976年   2146篇
  1975年   2349篇
  1974年   2470篇
  1973年   2397篇
  1972年   1955篇
  1971年   1868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