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   102535篇
  免费   4066篇
  国内免费   44篇
  2020年   1057篇
  2019年   1352篇
  2018年   1899篇
  2017年   1927篇
  2016年   2026篇
  2015年   1431篇
  2014年   1722篇
  2013年   8336篇
  2012年   3138篇
  2011年   3405篇
  2010年   2116篇
  2009年   2114篇
  2008年   3057篇
  2007年   3084篇
  2006年   2777篇
  2005年   2469篇
  2004年   2362篇
  2003年   2218篇
  2002年   2354篇
  2001年   3235篇
  2000年   3103篇
  1999年   2393篇
  1998年   1260篇
  1997年   1120篇
  1996年   1068篇
  1995年   990篇
  1993年   1003篇
  1992年   2005篇
  1991年   1892篇
  1990年   1842篇
  1989年   1672篇
  1988年   1639篇
  1987年   1583篇
  1986年   1660篇
  1985年   1709篇
  1984年   1443篇
  1983年   1250篇
  1982年   979篇
  1979年   1459篇
  1978年   1074篇
  1975年   1232篇
  1974年   1304篇
  1973年   1392篇
  1972年   1199篇
  1971年   1079篇
  1970年   964篇
  1969年   1006篇
  1968年   1275篇
  1967年   1183篇
  1966年   1021篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
Deflationism and Tarski's paradise   总被引:2,自引:0,他引:2  
Ketland  J 《Mind》1999,108(429):69-94
  相似文献   
32.
33.
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   
34.
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   
35.
36.
37.
38.
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   
39.
Evaluated the effect of varied physician affect on subject recall, anxiety, and perceptions in a simulated tense and ambiguous medical situation. Forty women at risk for breast cancer viewed videotapes of an oncologist presenting--with either worried or nonworried affect--mammogram results. Although the mammogram results and the oncologist were the same in both presentation, analyses indicated that, compared to the women receiving the results from a nonworried physician, the women receiving the results from a worried physician recalled significantly less information, perceived the clinical situation as significantly more severe, reported significantly higher levels of state anxiety, and had significantly higher pulse rates. These results suggest that physician affect plays a critical role in patient reaction to medical information. Implications for compliance research, patient satisfaction, and physician training are discussed.  相似文献   
40.
The ability of two species of tits to remember the location and/or features of an object was tested in a delayed-matching-to-sample procedure. Three values of retention interval between presentation of the sample stimulus and the choice--30 sec, 5 min, and 15 min--were used. Both species performed at above-chance level at all retention intervals, and there was no significant decline in accuracy with increasing interval. A pool of 100 stimulus objects was used, but the results of control trials indicated that the birds responded primarily to location rather than stimulus features of the object itseif. Although the food-storing marsh tit tended to perform at a higher level than the non-storing great tit, the only significant difference between the species was in the first 50 trials of the first treatment, when the birds were acquiring the task. The results are discussed in relation to the hypothesized special memory capacity of food-storing birds.  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