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   733篇
  免费   51篇
  国内免费   1篇
  785篇
  2023年   8篇
  2022年   15篇
  2021年   12篇
  2020年   24篇
  2019年   24篇
  2018年   30篇
  2017年   36篇
  2016年   25篇
  2015年   25篇
  2014年   22篇
  2013年   82篇
  2012年   35篇
  2011年   45篇
  2010年   28篇
  2009年   23篇
  2008年   32篇
  2007年   40篇
  2006年   29篇
  2005年   21篇
  2004年   17篇
  2003年   20篇
  2002年   21篇
  2001年   13篇
  2000年   6篇
  1999年   10篇
  1998年   9篇
  1997年   9篇
  1996年   6篇
  1995年   7篇
  1994年   7篇
  1992年   7篇
  1991年   9篇
  1990年   5篇
  1989年   5篇
  1988年   3篇
  1987年   8篇
  1985年   4篇
  1983年   4篇
  1982年   3篇
  1981年   4篇
  1980年   3篇
  1979年   3篇
  1976年   3篇
  1975年   4篇
  1974年   5篇
  1972年   4篇
  1971年   3篇
  1969年   7篇
  1964年   2篇
  1961年   3篇
排序方式: 共有785条查询结果,搜索用时 15 毫秒
671.
If a doctor is trying to decide whether or not to provide a medical treatment, does it matter ethically whether that treatment has already been started? Health professionals sometimes find it harder to stop a treatment (withdraw) than to refrain from starting the treatment (withhold). But does that feeling correspond to an ethical difference? In this article, we defend equivalence—the view that withholding and withdrawal of treatment are ethically equivalent when all other factors are equal. We argue that preference for withholding over withdrawal could represent a form of cognitive bias—withdrawal aversion. Nevertheless, we consider whether there could be circumstances in which there is a moral difference. We identify four examples of conditional nonequivalence. Finally, we reflect on the moral significance of diverging intuitions and the implications for policy. We propose a set of practical strategies for helping to reduce bias in end-of-life decision making, including the equivalence test.  相似文献   
672.
Toddlerhood is a sensitive period in the development of self-regulation, a set of adaptive skills that are fundamental to mental health and partly shaped by parenting. Healthy sleep is known to be critical for self-regulation; yet, the degree to which child sleep alters interactive child–parent processes remains understudied. This study examines associations between observed parenting and toddler self-regulation, with toddler sleep as a moderator of this association. Toddlers in low-income families (= 171) and their mothers were videotaped during free play and a self-regulation challenge task; videos were coded for mothers’ behavior and affect (free play) and toddlers’ self-regulation (challenge task). Mothers reported their child's nighttime sleep duration via questionnaire. Results revealed significant Sleep × Maternal Negative Affect and Sleep × Maternal Negative Control interactions. Children who did not experience negative parenting had good self-regulation regardless of their nighttime sleep duration. For children who did experience negative parenting, self-regulation was intact among those who obtained more nighttime sleep, but significantly poorer among children who were getting less nighttime sleep. Thus, among children who were reported to obtain less nighttime sleep, there were more robust associations between negative parenting and poorer self-regulation than among toddlers who were reported to obtain more sleep.  相似文献   
673.
674.
Historically, administrators and clinicians have been hesitant to address posttraumatic stress disorder (PTSD) in the treatment of substance use disorders (SUDs). However, research shows that SUD treatment recruitment and outcomes may be adversely affected if co‐occurring PTSD is left untreated. The authors provide guidelines for screening and assessment, treatment services, and workforce and organizational development that are designed to facilitate integrated PTSD–SUD treatment. Case examples illustrate the necessary precautions related to and the potential benefits of integrating treatment of PTSD and SUD.  相似文献   
675.
The article evaluates religious education strategies in view of the need to cope adequately with prejudices between Muslims and Christians in Tanzania against the historical background of the two traditions and contemporary events. It shows that religious prejudice is the result of religious instruction provided within both communities, and is due either to negative stereotypes or ignorance of the tradition of the other. The challenge is to critically analyse the teaching contents, aims and methods of religious instruction of each tradition in order to unearth prejudicial elements, and to recommend ways and means of coping with them.  相似文献   
676.
There is ample evidence for the existence of an association between sleeplessness and worry. Not much is known, however, concerning the nature of this relationship. Therefore, a study was conducted investigating the causal relationship between sleeplessness and nocturnal worry. A 2 x 2 (Worry x Induced sleeplessness) analysis of covariance design was used. The first factor consisted of a subject variable defined by scoring either high or low on a trait measure of worry (the Penn State Worry Questionnaire) and the second factor consisted of 300 mg caffeine or placebo. A total of 96 female undergraduate students participated. The dependent variables comprised measures of nocturnal worry (the Night-Time Thoughts Questionnaire) and subjective and objective sleep parameters. Overall, caffeine caused an increase in nocturnal worry and sleeplessness. A significant interaction effect occurred between Worry and Induced sleeplessness on one of the objective sleep parameters, but no other interaction effects were significant. The results suggest that worry may occur as an epiphenomenon of sleeplessness.  相似文献   
677.
Research suggests equivocal findings on associations of catecholamines and mood. Our study investigated the associations of emotional state, blood pressure and catecholamines in 55 healthy males undergoing mental stress. We especially checked the reported link between norepinephrine (NE) and emotional irritation. Blood pressure (SBP, DBP) and heart rate (HR) were continuously monitored. NE and epinephrine (EPI) were measured before, after, and 20 minutes after stress. Participants were divided into irritated versus non-irritated and anxious versus non-anxious subjects by median split on their baseline questionnaires. The task elicited significant cardiovascular, hormonal, and psychological stress responses. NE levels were significantly correlated with irritation before stress. Irritated subjects showed significantly higher DBP and NE than non-irritated subjects. The higher NE and DBP levels in the irritated participants suggest detrimental psycho-physiological interrelations promoting the development of stress-mediated cardiovascular diseases. Heightened emotional irritation before stress may be regarded as a psychological risk factor.  相似文献   
678.
The potential of online games to become a major global business and the existence of limited related references led to the current study. In this study, Rogers's diffusion of innovation (DOI) theory is applied to investigate the principles for the adoption of online games in Taiwan. The findings suggest that relative advantages and compatibility both have a significant effect on the adoption of online games for purposes of amusement, with the former being more important for early gamers and the latter being regarded as more critical for later gamers. In addition, complexity is found to impede online game diffusion and is regarded as the most important facilitator.  相似文献   
679.
Recent evidence suggests that there are at least two large-scale neural networks that represent the self and others. Whereas frontoparietal mirror-neuron areas provide the basis for bridging the gap between the physical self and others through motor-simulation mechanisms, cortical midline structures engage in processing information about the self and others in more abstract, evaluative terms. This framework provides a basis for reconciling findings from two separate but related lines of research: self-related processing and social cognition. The neural systems of midline structures and mirror neurons show that self and other are two sides of the same coin, whether their physical interactions or their most internal mental processes are examined.  相似文献   
680.
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