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   3363篇
  免费   144篇
  国内免费   1篇
  2023年   20篇
  2022年   21篇
  2021年   36篇
  2020年   53篇
  2019年   65篇
  2018年   95篇
  2017年   98篇
  2016年   135篇
  2015年   69篇
  2014年   114篇
  2013年   390篇
  2012年   181篇
  2011年   182篇
  2010年   114篇
  2009年   108篇
  2008年   162篇
  2007年   142篇
  2006年   144篇
  2005年   110篇
  2004年   120篇
  2003年   112篇
  2002年   82篇
  2001年   79篇
  2000年   68篇
  1999年   49篇
  1998年   42篇
  1997年   40篇
  1996年   38篇
  1995年   43篇
  1994年   29篇
  1993年   35篇
  1992年   41篇
  1991年   32篇
  1990年   39篇
  1989年   30篇
  1988年   41篇
  1987年   20篇
  1986年   18篇
  1985年   26篇
  1984年   24篇
  1983年   19篇
  1982年   27篇
  1981年   16篇
  1979年   22篇
  1978年   14篇
  1977年   17篇
  1974年   17篇
  1972年   13篇
  1970年   11篇
  1968年   12篇
排序方式: 共有3508条查询结果,搜索用时 15 毫秒
891.
Collections of material artifacts played a central institutional and intellectual role in Victorian anthropology. Ethnological theory argued that evolution in material technology recapitulated broader patterns of social evolution. Arrangement of artifacts into developmental typologies thereby provided heuristic exemplars by which theorists could chart the path of broader institutional change. Museums, in consequence, became centers for professional research and advancement. The central theoretical and disciplinary role of collections was tied to evolutionary theory. As the latter lost its preeminence in the first quarter of the twentieth century, so did museum settings decline in significance.  相似文献   
892.
Crowding has been viewed as a factor eliciting increased levels of aggression and tension in gregarious animals. The present study tested predictions derived from two models, the “density/aggression” model and the “active coping” model, which have been proposed to explain the responses of primates to crowding. In particular, we investigated the responses of a well-established group of long-tailed macaques (Macaca fascicularis) to short-term crowding. The group was periodically crowded for 2-3 hr into a familiar area. Control observations were carried out when the monkeys were in a six times larger enclosure. Data from 42 individuals belonging to different age-sex classes showed that only mild forms of aggression increased under the crowded condition. Crowding also resulted in a decrease in counteraggression, allogrooming, playing, and exploring the environment, while it produced an increase in huddling with companions. The frequency of reconciliation and redirection was not affected by crowding. These findings do not support either of the models but suggest that macaques adopt a “conflict-avoidance strategy” during short-term crowding. They reduce the risk of severe aggression in an environment where interindividual distances are small by simply decreasing the level of activity. Interestingly, however, when aggression occurs during crowding, tension reduction mechanisms such as reconciliation and redirection are used as often as in control conditions. © 1995 Wiley-Liss, Inc.  相似文献   
893.
The present studies test whether having a ‘vested interest’ in a particular outcome affects perceived covariation. Vested interest was defined as a function of whether Dutch university students were in favour or against the implementation of a threatening policy (receiving lectures in English as opposed to the native Dutch). In both studies subjects were told that this policy would be tried out at either their own or another comparable university, and that the university chosen would be the one with the greatest proportion of support for the plan. In Study 1 subjects (n = 151) were presented with statements expressing pro or contra attitudes and arguments to the policy. These were ostensibly derived from students at both universities but university affiliation was not indicated. In Study 2 (n = 114) similar information was provided but the statements were attributed to students from the two universities, such that there was an equal proportion of opposition/support for the plan at both universities. We hypothesized that illusory correlations would reflect the vested interest of attitude such that students opposing the policy would overestimate the proportion of opponents to supporters at their own university compared to those in favour of the policy. The results of both studies supported our hypothesis and they also revealed attitude to be a more important predictor of illusory correlation than perceived personal consequences for themselves. The prediction that illusory correlations would be weaker in Study 2 than in Study 1, because it provides less scope for bias, was not supported. The implications of these findings are discussed.  相似文献   
894.
In this article the author argues that for a full understanding of the women's movement in the Ottoman empire research on Ottoman women's organizations is essential. Based on her own research on the topic so far, she lists the potential sources for such research and their pitfalls and calls for (international) cooperation on the topic.  相似文献   
895.
Both children with epilepsy and children with ADHD may be characterized by slowing on reaction-time measurement. This is of particular interest, as neuropsychological assessment is often requested in the differential diagnosis between children with short non-convulsive epileptic seizures and children with ADHD. In this study we attempt to identify patterns of impairment on timed tasks that are specific for epilepsy, relative to ADHD. This study was an open, controlled parallel-group clinical investigation which included two groups of patients: 60 children with ADHD and 60 children with epilepsy. These children were compared with a control group (n=30) on two types of timed cognitive tasks: tasks with low information load (simple reaction-time measurement) and tasks with high information load (multiple decision reaction-time measurement). The simple reaction-time measurements show significant differences between ADHD and controls (all except for visual RT non-dominant hand) and between epilepsy and controls (only one test). No significant differences were found between epilepsy and ADHD. The two tests with high information load show significant slowing compared with the controls for epilepsy on the Binary Choice Reaction-Time Test and for ADHD on the Visual Searching Test. On both tests also the differences between epilepsy and ADHD are significant. The two tests in combination have a relatively satisfactory potential to classify the children with ADHD (75% correct classification) and the children with epilepsy (55% correct classification). We may conclude that complex reaction-time tests (i.e., timed tasks with high information load) have potential for assessing the differential impact of ADHD and epilepsy on attentional function. These tasks specifically reveal general slowing for children with epilepsy and slowing as an effect of failures of inhibitory self control on unstructured tasks for ADHD.  相似文献   
896.
The paper reacts against the strict separation between dialectical and rhetorical approaches to argumentation and argues that argumentative discourse can be analyzed and evaluated more adequately if the two are systematically combined. Such an integrated approach makes it possible to show how the opportunities available in each of the dialectical stages of a critical discussion have been used strategically to further the rhetorical aims of the speaker or writer. The approach is illustrated with the help of an analysis of an `advertorial' published by R. J. Reynolds Tobacco Company.  相似文献   
897.
898.
899.
Using an ego-centered network approach, we examine across two studies whether and how injunctive network norms—behaviors that are approved by alters—are related to majority members’ decisions to participate in helping actions supporting migrants. We hypothesize that the more people perceive their personal social networks as positive toward humanitarian actions for migrants, the more they consider their opinions on migration issues as self-defining, and the more they are willing to mobilize in helping behaviors. With a name generator approach, we collected personal social network data among majority members of Belgian, mobilized volunteers (Study 1, N = 204) and Swiss, non-mobilized participants (Study 2, N = 247). Results demonstrate the impact of injunctive network norms in promoting and maintaining helping actions for migrants, and the role of self-defining attitudes. Overall, the results highlight the importance of injunctive norms within personal social networks for participation in intergroup helping behaviors.  相似文献   
900.
Despite equal rights, minority groups such as ethnic minorities, LGBTQ + people, and people with mental or physical disabilities face discrimination on a day-to-day basis in subtle and hard-to-recognize forms. As discrimination slips beneath the surface, it becomes difficult to fight the stigma using collective social identity coping mechanisms. Instead, individual mobility responses such as distancing the self from the stigmatized identity (“self-group distancing”) become more viable as a way to improve one's individual standing. In this overview of the state of the art, we take a social identity lens to reflect on the current empirical knowledge base on self-group distancing as a coping mechanism and provide a framework on what self-group distancing is; when, where and why self-group distancing likely occurs; and what its consequences are at the individual and the collective level. The contributions in this special issue provide novel insights into how these processes unfold, and serve as a basis to set a future research agenda, for example on what can be done to prevent self-group distancing (i.e., interventions). Together, the insights highlight that while self-group distancing may seem effective to (strategically and temporarily) alleviate discomfort or to improve one's own position, on a broader collective level and over time self-group distancing tends to keep the current unequal social hierarchy in place.  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