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   24479篇
  免费   1091篇
  国内免费   16篇
  25586篇
  2020年   348篇
  2019年   415篇
  2018年   605篇
  2017年   578篇
  2016年   607篇
  2015年   434篇
  2014年   531篇
  2013年   2305篇
  2012年   939篇
  2011年   998篇
  2010年   612篇
  2009年   601篇
  2008年   843篇
  2007年   825篇
  2006年   820篇
  2005年   725篇
  2004年   676篇
  2003年   676篇
  2002年   667篇
  2001年   654篇
  2000年   605篇
  1999年   484篇
  1998年   305篇
  1997年   292篇
  1996年   284篇
  1995年   262篇
  1994年   235篇
  1993年   243篇
  1992年   348篇
  1991年   365篇
  1990年   340篇
  1989年   321篇
  1988年   291篇
  1987年   301篇
  1986年   300篇
  1985年   335篇
  1984年   321篇
  1983年   248篇
  1982年   243篇
  1981年   230篇
  1980年   205篇
  1979年   252篇
  1978年   215篇
  1977年   205篇
  1976年   201篇
  1975年   232篇
  1974年   264篇
  1973年   265篇
  1972年   211篇
  1968年   203篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
The present study tested gender as a moderator of the relationship between race-related stress and mental health symptoms among African American adults. Because African American women are exposed to stressors associated with race and gender, we hypothesized that African American women would have higher levels of race-related stress and more severe mental health outcomes related to experiences of race-related stress compared to African American men. Multivariate analyses revealed that African American men had higher stress appraisals for institutional racism than did women. No significant gender differences were found for cultural and individual racism. Moderated regression analyses revealed that increases in stress appraisals for individual racism were associated with increases in anxiety and obsessive-compulsive symptoms for African American women. Race-related stress had no significant effects on mental health symptoms for African American men. The findings suggest that gender is an important factor in determining the impact of race-related stress on mental health.  相似文献   
2.
Rats received Pavlovian conditioning in which food was signalled by a visual stimulus, A+, an auditory stimulus, B+, and a compound composed of different visual and auditory stimuli, CD+. Test trials were then given with the compound AB. Experiments 1 and 2A revealed stronger responding during AB than during CD. In Experiment 2B, there was no evidence of a summation of responding during AB when A+ B+ training was conducted in the absence of CD+ trials. A further failure to observe abnormally strong responding during ABwas found in Experiment 3 for which the training trials with A+ B+ CD+ were accompanied by trials in which C and D were separately paired with food. The results are explained in terms of a configural theory of conditioning, which assumes that responding during a compound is determined by generalization from its components, as well as from other compounds to which it is similar.  相似文献   
3.
Most arguments against active euthanasia, as do most arguments in applied ethics generally, take place within the framework of what can broadly be referred to as a modern, as opposed to an ancient, approach to moral theory. In this paper, I argue that this fact works to the disadvantage of opponents of active euthanasia, and that if there is a successful argument against active euthanasia, it will be of the latter sort. In Part I, I attempt to clarify thedistinction between modern and ancient approaches with which I am concerned. In Part II, I attempt to show that any argument against active euthanasia that is of the first sort is bound to fail. In Part III, I propose an argument against active euthanasia of the second sort that I believe has a better chance for success. In Part IV, I consider some objections that can be raised against this argument and attempt to show how they can be overcome.  相似文献   
4.
5.
6.
7.
8.
9.
10.
The intuition that we have privileged and unrestricted access to ourselves – that we inevitably know who we are, how we feel, what we do, and what we think – is very compelling. Here, we review three types of evidence about the accuracy of self-perceptions of personality and conclude that the glass is neither full nor empty. First, studies comparing self-perceptions of personality to objective criteria suggest that self-perceptions are at least tethered to reality – people are not completely clueless about how they behave, but they are also far from perfect. Second, studies examining how well people’s self-perceptions agree with others’ perceptions of them suggest that people’s self-views are not completely out of synch with how they are seen by those who know them best, but they are also far from identical. Third, studies examining whether people know the impressions they make on others suggest that people do have some glimmer of insight into the fact that others see them differently than they see themselves but there is still a great deal people do not know about how others see them. The findings from all three approaches point to the conclusion that self-knowledge exists but leaves something to be desired. The status of people’s self-knowledge about their own personality has vast implications both for our conception of ourselves as rational agents and for the methods of psychological inquiry.  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