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   83262篇
  免费   3367篇
  国内免费   29篇
  2020年   939篇
  2019年   1101篇
  2018年   1582篇
  2017年   1582篇
  2016年   1687篇
  2015年   1184篇
  2014年   1442篇
  2013年   7434篇
  2012年   2624篇
  2011年   2662篇
  2010年   1633篇
  2009年   1636篇
  2008年   2353篇
  2007年   2244篇
  2006年   2065篇
  2005年   1738篇
  2004年   1780篇
  2003年   1743篇
  2002年   1651篇
  2001年   2704篇
  2000年   2541篇
  1999年   1947篇
  1998年   917篇
  1997年   797篇
  1996年   963篇
  1995年   887篇
  1994年   871篇
  1993年   820篇
  1992年   1745篇
  1991年   1583篇
  1990年   1590篇
  1989年   1462篇
  1988年   1448篇
  1987年   1363篇
  1986年   1330篇
  1985年   1398篇
  1984年   1180篇
  1983年   1002篇
  1979年   1189篇
  1978年   865篇
  1975年   1022篇
  1974年   1090篇
  1973年   1161篇
  1972年   1028篇
  1971年   933篇
  1970年   807篇
  1969年   788篇
  1968年   1022篇
  1967年   893篇
  1966年   850篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
21.
22.
Adult age differences in the consistency effect were examined in 3 experiments. The consistency effect refers to items inconsistent with expectations being better remembered than items consistent with expectations. Younger and older adults walked into an office room and viewed objects that varied in their consistency with expectation. Immediate and delayed recognition tests on item information (i.e., distractors were defined by their semantic identity) revealed that both age groups recognized unexpected items better than expected items. However, when recognition of token information was requested (i.e., distractors were defined by their physical appearance), younger adults, in contrast to older adults, exhibited consistency effects. Also, under divided attention, young adults revealed the same pattern of data as did elderly adults under full attention. The results are discussed in terms of capacity-related differences in distinctive encoding.  相似文献   
23.
We investigated motivational and cognitive processes of behavior change with respect to mammography screening. One hundred forty-two women (ages 40 and older) recruited from three worksites answered a 41-item questionnaire consisting of statements based on constructs from the transtheoretical model of behavior change. Principal-components analysis identified two factors: a six-item component representing positive perceptions of mammography (Pros) and a six-item component representing avoidance of mammography (Cons). Analysis of variance showed that Pros, Cons, and a derived Decisional Balance measure (Pros minus Cons) were associated with stage of mammography adoption. Results are consistent with applications of the model to smoking cessation. The model is also discussed as it relates to other theories of behavior change and as a general strategy for analyzing perceptual data pertinent to health-related actions and intentions for behavioral change.  相似文献   
24.
The authors tested effects of a 10-week group cognitive-behavioral stress management intervention among 100 women newly treated for Stage 0-II breast cancer. The intervention reduced prevalence of moderate depression (which remained relatively stable in the control condition) but did not affect other measures of emotional distress. The intervention also increased participants' reports that having breast cancer had made positive contributions to their lives, and it increased generalized optimism. Both remained significantly elevated at a 3-month follow-up of the intervention. Further analysis revealed that the intervention had its greatest impact on these 2 variables among women who were lowest in optimism at baseline. Discussion centers on the importance of examining positive responses to traumatic events--growth, appreciation of life, shift in priorities, and positive affect-as well as negative responses.  相似文献   
25.
26.
27.
28.
29.
30.
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