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   3270篇
  免费   152篇
  国内免费   2篇
  2023年   21篇
  2022年   21篇
  2021年   28篇
  2020年   63篇
  2019年   87篇
  2018年   97篇
  2017年   104篇
  2016年   101篇
  2015年   92篇
  2014年   125篇
  2013年   395篇
  2012年   175篇
  2011年   177篇
  2010年   95篇
  2009年   117篇
  2008年   156篇
  2007年   173篇
  2006年   155篇
  2005年   119篇
  2004年   108篇
  2003年   98篇
  2002年   113篇
  2001年   60篇
  2000年   51篇
  1999年   43篇
  1998年   43篇
  1997年   47篇
  1996年   31篇
  1995年   26篇
  1994年   22篇
  1993年   28篇
  1992年   36篇
  1991年   18篇
  1990年   28篇
  1989年   24篇
  1988年   16篇
  1987年   19篇
  1986年   24篇
  1985年   23篇
  1983年   18篇
  1982年   19篇
  1981年   20篇
  1980年   14篇
  1978年   13篇
  1977年   15篇
  1976年   14篇
  1975年   16篇
  1974年   16篇
  1973年   15篇
  1968年   13篇
排序方式: 共有3424条查询结果,搜索用时 15 毫秒
101.

Anxiety and depressive disorders are global public health concerns, and research suggests that these disorders are common in parents and can adversely influence family functioning. However, little is known about normative levels of anxiety and depressive symptoms in parents of school-age children. The present study reports on generalized anxiety and depressive symptoms in 1570 parents and guardians of a nationally representative sample of children ages five to twelve years using two widely used and validated questionnaires: the eight-item variant of the Patient Health Questionnaire depression scale (PHQ-8) and the seven-item Generalized Anxiety Disorder scale (GAD-7). Moderate to severe levels of generalized anxiety symptoms were reported in 12.7% of the total sample and moderate to severe levels of depressive symptoms were reported in 14.1% of the sample; 17.7% of the sample reported moderate to severe levels of either generalized anxiety or depressive symptoms. This percentage was higher for females, younger parents and guardians, and parents and guardians reporting lower household incomes. These data, collected online in early 2018, may be useful for researchers and clinicians studying and treating anxiety and depression in parents. Further, these data provide a baseline for researchers currently studying the impact of changes related to the novel coronavirus (COVID-19) pandemic (e.g., school closures) on the mental health of parents of school-age children.

  相似文献   
102.
The Wilcoxon–Mann–Whitney procedure is invariant under monotone transformations but its use as a test of location or shift is said not to be so. It tests location only under the shift model, the assumption of parallel cumulative distribution functions (cdfs). We show that infinitely many monotone transformations of the measured variable produce parallel cdfs, so long as the original cdfs intersect nowhere or everywhere. Thus there are infinitely many effect sizes measured as shifts of medians, invalidating the notion that there is one true shift parameter and thereby rendering any single estimate dubious. Measuring effect size using the probability of superiority alleviates this difficulty.  相似文献   
103.
104.
This article examines the influential analogical schemas of David Burrell and John Milbank. While Milbank emphasises that analogy must be understood as primarily an ontological doctrine, much of Burrell’s work focuses on semantic rather than ontological issues. Milbank has strongly criticised one of Burrell’s early books for construing Aquinas too much in terms of the agnosticism of Kant. It is demonstrated, however, that Burrell is increasingly led in his reading of Aquinas to acknowledge the necessity of a similitude of participation between creatures and God. Analysis of the disagreement between Burrell and Milbank shows one of the reasons why the via analogia matters. We need not privilege the apophatic over the cataphatic, nor the cataphatic over the apophatic. The way of analogy transcends this unpalatable either/or. As relying on the proper exercises, on practical know-how, analogy allows theology a powerful pedagogical tool to govern God-talk, while yet affirming the continual revelation and discovery of something ever-greater.  相似文献   
105.
We challenge the common interpretation of targets’ immediate confrontation in reaction to discrimination as self-serving behavior and propose different underlying motivations for this phenomenon. In five online scenario studies (Noverall = 1,447), we demonstrate across different samples and contexts that targets indicate a distinct pursuit of the following self-reported confrontation goals: individual-benefit (e.g., perpetrator apologizes); group-benefit (e.g., prejudice reduction); and distancing (e.g., demonstrating that one is different from typical group members). Furthermore, meaningful associations of the pursuits of individual-benefitting goals and group-benefitting goals with group identification, disidentification, and further collective action intentions indicate that they represent different confrontation motivations: Individual-benefitting confrontation serves to cope with the individual mistreatment of discrimination, whereas group-benefitting confrontation represents a form of collective action. Distancing goals were associated with disidentification and—unexpectedly—group identification. Our results show that the phenomenon of confrontation in reaction to discrimination can be the result of different underlying psychological processes.  相似文献   
106.
Five male/two female rat colonies were established in visible burrow systems, with males selected for pregrouping attack scores and also evaluated in open field and cat odor tests. Dominant-subordinate pregrouping attack differences suggested that the males becoming dominant are those showing more persistent and higher level attack. For six colonies showing dominant-subordinate behavioral differences, pregrouping defense tests failed to predict subordinate status. However, pregrouping defense scores were reliably correlated with subordinate pre-postgrouping change scores for voluntary ethanol consumption. Subordinates showed higher ranked ethanol consumption than dominants, but these groups were not different on pregrouping ethanol consumption. Subordinate postgrouping ethanol consumption was positively correlated with pregrouping attack toward an adult intruder, consonant with previous findings that highly aggressive subordinates are the targets of more intense attack by dominants. These results provide further support for a view that subordination stress increases voluntary ethanol consumption in male rats and suggest some additional individual differences factors that may be involved in increased ethanol consumption for male subordinates. © 1992 Wiley-Liss, Inc.  相似文献   
107.
Subjects had their initial frames of reference concerning a decision problem (Asian Disease problem; Tversky & Kahneman, 1981, Science,211, 453–458) manipulated in order to compose four-person groups containing members with different frames of reference. Three different group compositions (number of members with "gain-oriented" vs "loss-oriented" frames) were used: three gain-oriented and one loss oriented (3–1), two gain-oriented and two loss-oriented (2–2), and one gain-oriented and three loss-oriented (1–3). Results indicated a postgroup discussion choice shift toward the risk alternative in the 2–2 and the 1–3 composition conditions. However, changes in members′ frames of reference were unrelated to preference changes. Group composition also affected group decision processes. Implications for future theory and research in small group decision-making are discussed.  相似文献   
108.
Science and Engineering Ethics - Scientific peer reviewers play an integral role in the grant selection process, yet very little has been reported on the levels of participation or the motivations...  相似文献   
109.
110.
Male and female mice from the Collins HI and LO laterality strains were isolated for 3–5 days. Thereafter on Day 1 each was given the Intruder Test followed by a Training Test; the latter was repeated 1 week later. All males of 36 days or older fought vigorously, but without line differences. Females of the HI strain showed higher numbers of fighters and greater intensity of fighting than those of the LO strain, and by the second Training Test these differences were significant at p < 0.01. The HI and LO laterality strains thus provide useful tools for investigating the functions of female agonistic behavior and the possible relationship between laterality and the expression of aggression.  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