全文获取类型
收费全文 | 7393篇 |
免费 | 309篇 |
国内免费 | 1篇 |
专业分类
7703篇 |
出版年
2021年 | 88篇 |
2020年 | 142篇 |
2019年 | 165篇 |
2018年 | 248篇 |
2017年 | 238篇 |
2016年 | 289篇 |
2015年 | 150篇 |
2014年 | 164篇 |
2013年 | 697篇 |
2012年 | 324篇 |
2011年 | 331篇 |
2010年 | 201篇 |
2009年 | 212篇 |
2008年 | 261篇 |
2007年 | 257篇 |
2006年 | 235篇 |
2005年 | 194篇 |
2004年 | 195篇 |
2003年 | 174篇 |
2002年 | 160篇 |
2001年 | 177篇 |
2000年 | 137篇 |
1999年 | 117篇 |
1998年 | 65篇 |
1997年 | 65篇 |
1996年 | 78篇 |
1995年 | 66篇 |
1994年 | 66篇 |
1993年 | 60篇 |
1992年 | 82篇 |
1991年 | 90篇 |
1990年 | 71篇 |
1989年 | 70篇 |
1988年 | 75篇 |
1987年 | 72篇 |
1986年 | 61篇 |
1985年 | 83篇 |
1984年 | 76篇 |
1983年 | 63篇 |
1982年 | 75篇 |
1981年 | 57篇 |
1979年 | 77篇 |
1978年 | 68篇 |
1977年 | 66篇 |
1976年 | 59篇 |
1975年 | 79篇 |
1974年 | 73篇 |
1973年 | 69篇 |
1971年 | 61篇 |
1967年 | 62篇 |
排序方式: 共有7703条查询结果,搜索用时 6 毫秒
1.
2.
3.
4.
Elizabeth J. Robinson Stephen A. Butterfill Erika Nurmsoo 《The British journal of developmental psychology》2011,29(4):961-980
In five experiments, we examined 3‐ to 6‐year‐olds’ understanding that they could gain knowledge indirectly from someone who had seen something they had not. Consistent with previous research, children judged that an informant, who had seen inside a box, knew its contents. Similarly, when an informant marked a picture to indicate her suggestion as to the content of the box, 3‐ to 4‐year‐olds trusted this more frequently when the informant had seen inside the box than when she had not. Going beyond previous research, 3‐ to 4‐year‐olds were also sensitive to informants’ relevant experience when they had to look over a barrier to see the marked picture, or ask for the barrier to be raised. Yet when children had to elicit the informant's suggestion, rather than just consult a suggestion already present, even 4‐ to 5‐year‐olds were no more likely to do so when the informant had seen the box's content than when she had not, and no more likely to trust the well‐informed suggestion than the uninformed one. We conclude that young children who can ask questions may not yet fully understand the process by which they can gain accurate information from someone who has the experience they lack. 相似文献
5.
Tavis S Campbell Blaine Ditto Jean R Séguin Jean-Marc Assaad Robert O Pihl Daniel Nagin Richard E Tremblay 《Health psychology》2002,21(6):594-600
A growing literature has observed a significant reduction in pain sensitivity among hypertensive animals and humans. It is uncertain whether a reduced sensitivity to pain can be observed in nonnotensive individuals who go on to develop high blood pressure. Blood pressure (BP) was reassessed in one hundred fifteen 19-year-old boys initially tested at age 14, when they were also presented with a pain stimulus (mechanical finger pressure). Hierarchical regression analyses indicated that information regarding pain tolerance improved prediction of changes in systolic and diastolic blood pressure beyond that afforded by differences in BP at age 14, parental history of hypertension, and body mass index. These analyses suggest that pain sensitivity may be associated with physiological processes involved in the development of sustained high blood pressure. 相似文献
6.
7.
8.
9.
10.