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   80117篇
  免费   3185篇
  国内免费   26篇
  2019年   953篇
  2018年   1308篇
  2017年   1354篇
  2016年   1428篇
  2015年   1043篇
  2014年   1277篇
  2013年   6012篇
  2012年   2298篇
  2011年   2502篇
  2010年   1561篇
  2009年   1546篇
  2008年   2232篇
  2007年   2224篇
  2006年   2053篇
  2005年   1777篇
  2004年   1685篇
  2003年   1607篇
  2002年   1732篇
  2001年   2423篇
  2000年   2381篇
  1999年   1834篇
  1998年   915篇
  1997年   866篇
  1996年   856篇
  1995年   763篇
  1992年   1597篇
  1991年   1459篇
  1990年   1452篇
  1989年   1347篇
  1988年   1331篇
  1987年   1255篇
  1986年   1377篇
  1985年   1382篇
  1984年   1171篇
  1983年   1066篇
  1982年   770篇
  1981年   778篇
  1979年   1239篇
  1978年   921篇
  1976年   764篇
  1975年   1036篇
  1974年   1160篇
  1973年   1270篇
  1972年   1033篇
  1971年   1008篇
  1970年   907篇
  1969年   947篇
  1968年   1188篇
  1967年   1066篇
  1966年   974篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
33.
34.
When some pictures are mirror reversed, aesthetic evaluations of them change dramatically. Stimulus features that may be important in contributing to this effect are: (a) location of areas of principal interest or weight in the picture space, (b) cues that suggest a direction of motion within the picture. Dextrals and inverted sinistrals preferred paintings with cues suggesting motion proceeding from left to right over their mirror-reversed versions and also preferred those with weight concentrated in the left portions of the picture space. The explanation that best fits these data is that preference is promoted when the picture content encourages attention to its rightmost portions, thus placing a majority of the picture in the left visual field where it is directly processed by the right hemisphere.  相似文献   
35.
Our aim was to explore the role of parents in the transmission of stereotypical body size attitudes and awareness of weight loss strategies to preschool children. Participants were 279 3‐year‐old children and their parents, who provided data at baseline and 1 year later. Parents completed self‐report body size attitude and dieting measures. Child weight bias and awareness of weight loss strategies were assessed through interview. Over time, negative associations with large bodies and awareness of weight loss strategies increased. Fathers’ attitudes prospectively predicted boys’ weight bias and awareness of weight loss strategies. Among girls, parental attitudes were less predictive. Findings confirm the importance of fathers in the development of boys’ body attitudes and inform prevention programmes.  相似文献   
36.
37.
38.
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   
39.
40.
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   
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