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   2981篇
  免费   41篇
  国内免费   3篇
教育   2151篇
科学研究   271篇
各国文化   41篇
体育   137篇
综合类   1篇
文化理论   35篇
信息传播   389篇
  2022年   17篇
  2021年   26篇
  2020年   30篇
  2019年   54篇
  2018年   73篇
  2017年   93篇
  2016年   74篇
  2015年   47篇
  2014年   72篇
  2013年   753篇
  2012年   66篇
  2011年   64篇
  2010年   60篇
  2009年   58篇
  2008年   82篇
  2007年   67篇
  2006年   60篇
  2005年   40篇
  2004年   40篇
  2003年   48篇
  2002年   63篇
  2001年   48篇
  2000年   38篇
  1999年   48篇
  1998年   32篇
  1997年   35篇
  1996年   32篇
  1995年   29篇
  1994年   25篇
  1993年   28篇
  1992年   43篇
  1991年   25篇
  1990年   28篇
  1989年   28篇
  1987年   31篇
  1986年   36篇
  1985年   37篇
  1984年   18篇
  1983年   24篇
  1982年   23篇
  1980年   24篇
  1979年   35篇
  1978年   35篇
  1976年   26篇
  1975年   18篇
  1974年   20篇
  1973年   19篇
  1972年   17篇
  1971年   18篇
  1970年   15篇
排序方式: 共有3025条查询结果,搜索用时 31 毫秒
1.
Children are sensitive to a number of considerations influencing distributions of resources, including equality, equity, and reciprocity. We tested whether children use a specific type of reciprocity norm—market norms—in which resources are distributed differentially based strictly on amount offered in return. In two studies, 195 children 5–10 years and 60 adults distributed stickers to friends offering same or different amounts of money. Overall, participants distributed more equally when offers were the same and more unequally when offers were different. Although sensitive to why friends offered different amounts of money, children increasingly incorporated market norms into their distributions with age, as the oldest children and adults distributed more to those offering more, irrespective of the reasons provided.  相似文献   
2.
3.
4.
Book reviews     
  相似文献   
5.
6.
7.
Aristotle     
Charles Hummel 《Prospects》1993,23(1-2):39-51
  相似文献   
8.
This investigation identifies demographic, media, and social correlates of verbally aggressive communication in adolescence. Mail surveys were completed and returned by 2,300 adolescents between the ages of 13 and 15. These adolescents were asked about the prevalence of verbal and physical aggression, the context in which it occurred, demographics, and the interpersonal and media influences in their lives. The results indicate that verbal aggression is widespread, that committing and experiencing verbal aggression is largely reciprocal, that there is a strong relationship between committing verbal and physical aggression, and that peer social influence and listening to violently oriented music are mildly related to verbal aggression in adolescents. These findings suggest more resources should be allocated to teaching adolescents to understand and control verbal aggression. Further, they provide important answers to many prevention and intervention programmatic questions, including context, content, and targeting concerns. Since the negative consequences of verbal aggression are severe and long lasting, decreasing this destructive communication behavior should significantly improve the lives of many adolescents. These and other practical implications are expanded upon and discussed.  相似文献   
9.
10.
The purpose of this study was to examine if steps/day taken by middle school students varied based on aerobic fitness classification. Middle school students (N = 223; 112 girls, 111 boys) were assigned to three aerobic fitness categories (HIGH, MOD, LOW) based on results of the FlTNESSGRAM PACER test. Four weekdays of pedometer monitoring determined activity levels (steps/day). Boys accumulated significantly more steps/day than girls, 11,589 +/- 3,270 and 10,232 +/- 2,517 steps/day, respectively; F(1,219) = 16.0, p < .001, eta2 = .055. There were no differences in steps/day between grades. HIGH fit participants accumulated significantly more steps/day, F(2, 217) = 12.2, p < .101, eta2 = .101, than moderately fit and low fit participants (approximately 1,491 and ; 2,867 steps/day, respectively). Middle school students who participated in sports in addition to physical education (PE) accumulated significantly more steps/day (approximately 980 steps/day) than those participating in PE only, F(1, 219) = 10.0, p < .01, eta2 = .044. Although the relationship between physical activity and aerobic fitness was moderate (0.35; p < .01), these data demonstrated significant differences in accumulated steps/day among youth of varying aerobic fitness levels. Whether improved fitness levels were the result of additional activity or the cause of it remains to be determined. Regardless, the fittest middle school students were also the most active and accumulated a significant amount of steps/day through organized extracurricular physical activities.  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