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   76606篇
  免费   3070篇
  国内免费   30篇
  2020年   836篇
  2019年   975篇
  2018年   1418篇
  2017年   1425篇
  2016年   1506篇
  2015年   1071篇
  2014年   1329篇
  2013年   6342篇
  2012年   2422篇
  2011年   2465篇
  2010年   1526篇
  2009年   1523篇
  2008年   2194篇
  2007年   2119篇
  2006年   1960篇
  2005年   1648篇
  2004年   1683篇
  2003年   1618篇
  2002年   1596篇
  2001年   2397篇
  2000年   2252篇
  1999年   1722篇
  1998年   844篇
  1997年   770篇
  1996年   817篇
  1995年   750篇
  1992年   1471篇
  1991年   1366篇
  1990年   1335篇
  1989年   1283篇
  1988年   1263篇
  1987年   1186篇
  1986年   1217篇
  1985年   1247篇
  1984年   1049篇
  1983年   905篇
  1979年   1098篇
  1978年   847篇
  1977年   712篇
  1976年   719篇
  1975年   892篇
  1974年   1052篇
  1973年   1098篇
  1972年   902篇
  1971年   860篇
  1970年   784篇
  1969年   795篇
  1968年   974篇
  1967年   880篇
  1966年   870篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
23.
24.
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   
25.
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   
26.
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   
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