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   5019篇
  免费   217篇
  国内免费   1篇
  2023年   31篇
  2022年   30篇
  2021年   56篇
  2020年   84篇
  2019年   103篇
  2018年   147篇
  2017年   163篇
  2016年   192篇
  2015年   115篇
  2014年   156篇
  2013年   617篇
  2012年   274篇
  2011年   261篇
  2010年   188篇
  2009年   153篇
  2008年   228篇
  2007年   231篇
  2006年   196篇
  2005年   162篇
  2004年   173篇
  2003年   157篇
  2002年   123篇
  2001年   107篇
  2000年   93篇
  1999年   62篇
  1998年   55篇
  1997年   61篇
  1996年   58篇
  1995年   60篇
  1994年   41篇
  1993年   54篇
  1992年   64篇
  1991年   41篇
  1990年   58篇
  1989年   46篇
  1988年   56篇
  1987年   38篇
  1986年   21篇
  1985年   34篇
  1984年   33篇
  1983年   29篇
  1982年   46篇
  1981年   27篇
  1980年   20篇
  1979年   29篇
  1978年   28篇
  1977年   22篇
  1974年   22篇
  1970年   16篇
  1968年   16篇
排序方式: 共有5237条查询结果,搜索用时 15 毫秒
151.
152.
153.
Reviews, compares and evaluates a self-justijication and a decision theoretical conceptualization of equity. It is argued that the latter approach reveals an important and often neglected distinction between equity as a goal of social interaction and equity as an interpersonal strategy employed in rhe pursuit of other valued goals. Associated problems of definition and measurement are discussed. After a review of relevant research it is concluded that equity serves predominantly as an accommodative interpersonal strategy, and that future research should focus on analyzing the various functional bases of equity, their relationships, and their eflects on behaviour.  相似文献   
154.
The present study aimed to integrate the social identity approach to health and well-being with social network analysis. Previous research on the effects of social network centrality on stress has yielded mixed results. Building on the social identity approach, we argued that these mixed results can be explained, in part, by taking into account the degree to which individuals identify with the social network. We hence hypothesized that the effects of social network centrality on stress are moderated by social identification. Using a full roster method, we assessed the social network of first-year psychology students right after the start of their study programme and three months later. The effects of network centrality (betweenness, closeness, eigenvector centrality) and social identification on stress were examined using structural equation models. As predicted, our results revealed a significant interaction between network centrality and social identification on stress: For weakly or moderately identified students, network centrality was positively related to stress. By contrast, for strongly identified students, network centrality was unrelated to stress. In conclusion, our results point to the perils of being well-connected yet not feeling like one belongs to a group.  相似文献   
155.
156.
Motivation and Emotion - Research recently showed that boredom proneness was associated with increased social distancing rule-breaking in a sample collected early in the COVID-19 pandemic. Here we...  相似文献   
157.
Tamminga  Allard  Duijf  Hein  Van De Putte  Frederik 《Synthese》2021,198(9):8733-8753

We use a deontic logic of collective agency to study reducibility questions about collective agency and collective obligations. The logic that is at the basis of our study is a multi-modal logic in the tradition of stit (‘sees to it that’) logics of agency. Our full formal language has constants for collective and individual deontic admissibility, modalities for collective and individual agency, and modalities for collective and individual obligations. We classify its twenty-seven sublanguages in terms of their expressive power. This classification enables us to investigate reducibility relations between collective deontic admissibility, collective agency, and collective obligations, on the one hand, and individual deontic admissibility, individual agency, and individual obligations, on the other.

  相似文献   
158.
There have been many reflections, both individual and collective within our Institutes, on the effects on our work with patients caused by COVID-19 and the requirement to move suddenly from the setting of our own consulting rooms to working with patients online (see also, the previous issue of this Journal). This paper focuses on what we have learned from these experiences that can add to our knowledge about the role of the setting in analytic work. Drawing on Bleger’s (1967) seminal paper highlighting the usual setting as a mute projection carrier for primitive wishes and affects, the paper explores how different patients have reacted to the loss of the analyst as the guardian of the setting and in particular as an embodied presence. Some key questions and challenges for both patients and analysts during the pandemic, when ‘the setting begins to weep’, are explored.  相似文献   
159.

Assessments for spatial working memory (SWM) in pet dogs that can detect age-related cognitive deficits in a single session may aid in diagnosing canine dementia and may facilitate translational research on Alzheimer’s disease in humans. Adaptive testing procedures are widely used in single-session assessments for humans with diverse cognitive abilities. In this study, we designed and deployed two up-down staircase assessments for SWM in which 26 pet dogs were required to recall the location of a treat hidden behind one of two identical boxes following delays of variable length. In the first experiment, performance tended to decline with age but few dogs completed the test (n?=?10). However, all of the dogs that participated in the second experiment (n?=?24) completed the assessment and provided reliable evidence of learning and retaining the task. Delay length and age significantly predicted performance supporting the validity of this assessment. The relationships between age and performance were described by inverted U-shaped functions as both old and young dogs displayed deficits in weighted cumulative-scores and trial-by-trial performance. Thus, SWM in pet dogs may develop until midlife and decline thereafter. Exploratory analyses of non-mnemonic fixation strategies, sustained engagement, inhibitory control, and potential improvements for future SWM assessments which adopt this paradigm are also discussed.

  相似文献   
160.
Cognitive Processing - Many older people, both with and without dementia, eventually move from their familiar home environments into unfamiliar surroundings, such as sheltered housing or care...  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