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   3707篇
  免费   86篇
  3793篇
  2024年   28篇
  2023年   39篇
  2022年   39篇
  2021年   57篇
  2020年   94篇
  2019年   140篇
  2018年   153篇
  2017年   165篇
  2016年   176篇
  2015年   116篇
  2014年   144篇
  2013年   436篇
  2012年   241篇
  2011年   216篇
  2010年   140篇
  2009年   130篇
  2008年   166篇
  2007年   163篇
  2006年   153篇
  2005年   130篇
  2004年   116篇
  2003年   86篇
  2002年   93篇
  2001年   49篇
  2000年   45篇
  1999年   40篇
  1998年   31篇
  1997年   28篇
  1996年   20篇
  1995年   12篇
  1994年   19篇
  1993年   19篇
  1992年   21篇
  1991年   15篇
  1990年   19篇
  1989年   20篇
  1988年   13篇
  1986年   11篇
  1985年   16篇
  1984年   14篇
  1983年   13篇
  1982年   16篇
  1981年   18篇
  1980年   13篇
  1979年   13篇
  1977年   12篇
  1976年   11篇
  1975年   10篇
  1973年   9篇
  1968年   13篇
排序方式: 共有3793条查询结果,搜索用时 0 毫秒
811.
Research suggests a U.S. political ideology gap for taking COVID-19 precautions, but we do not know the role of cognitive risk (assessed here as perceived risk) and affective risk (assessed here as worry) in explaining why conservative Americans participated in fewer recommended precautions (e.g., mask wearing) and whether governmental trust attenuates the effect. We predicted that conservatives (compared with liberals) would take fewer precautions because they thought they were less at risk and were less worried about COVID-19, but that this would be more pronounced for those with low governmental trust. In this study, U.S. adults (representative sample: N = 738; Mage = 46.8; 52% women; 78% white) who had not had COVID-19 took two online surveys 2 weeks apart during the first wave of the pandemic (April 2020). Participants reported ideology, perceived risk of getting or dying of COVID-19, worry about COVID-19, and trust in the CDC and state officials at baseline. At follow-up, participants reported on COVID-19 precautions: (1) prevention behavior participation (e.g., mask wearing) and (2) behavioral willingness for future behaviors (e.g., vaccination). Results showed that, politically conservative Americans took fewer precautions due to lower worry (but unexpectedly not due to lower perceived risk). As predicted, when trust was high, the ideology gap was muted for predicting precautions as well as for predicting perceived risk and worry. In sum, conservatives worried less about COVID-19 which predicted fewer precautions, but trust in governmental institutions reduced this ideological gap. Improving governmental trust could be one fruitful path to increasing COVID-19 precautions.  相似文献   
812.
    
The COVID-19 pandemic created significant strain on both mental health and romantic relationships. Therefore, we examined longitudinal associations between romantic relationship quality, relationship loneliness, and depressive symptoms over 6 months of the COVID-19 pandemic. We surveyed 122 couples (n = 244 individuals) in approximately May, September, and November 2020. Using a dyadic mediation model, findings indicated that relationship quality at Time 1 was positively associated with depression at Time 3 for men, but not for women. A significant indirect effect of relationship quality on depression via relationship loneliness at Time 2 was found for both men and women. Self-mastery, or feeling in control of one's life circumstances, was an important covariate of women's depressive symptoms. Overall, these findings highlight relationship loneliness as particularly salient for mental health and demonstrate the importance of high-quality relationships for promoting well-being during stressful events, such as global pandemics.  相似文献   
813.
    
Why do consumers sometimes fall for spurious claims—for example, brain training games that prevent cognitive decline, toning sneakers that sculpt one's body, flower essence that cures depression—and how can consumers protect themselves in the modern world where information is shared quickly and easily? As cognitive scientists, we view this problem through the lens of what we know, more generally, about how people evaluate information for its veracity, and how people update their beliefs. That is, the same processes that support true belief can also encourage people to sometimes believe misleading or false information. Anchoring on the large literature on truth and belief updating allows predictions about consumer behavior; it also highlights possible solutions while casting doubt on other possible responses to misleading communications.  相似文献   
814.
    
Harm reduction approaches to heroin addiction treatment are safe and effective, particularly those using medication-assisted therapy, yet they remain underutilized in the drug treatment field. This paper posits the need for a psychoanalytic formulation of harm reduction. It draws on object relations theory, to illustrate the ways in which harm reduction, as a philosophy and as a practice, maps onto the particular developmental and attachment themes of addiction. It explores heroin addiction and harm reduction at the intersection of the psyche and the social and calls upon psychoanalysis to challenge oppressive systems in the lives of heroin users.  相似文献   
815.
This study identified affective and cognitive factors predicting American 6th, 8th, and 10th graders' civic orientation, defined here as feelings of effective community service, conceptualizations of citizenship, and participation in student government. Independent variables included measures of interpersonal trust, valuation of religion, and individualistic versus collective action attributions of responsibility for solving social problems. Interpersonal trust predicted four out of the five outcome variables. Individualistic attribution of social responsibility was a predictor of running for student government office, and collective action attribution was a predictor of conceptualizations of citizenship. Religious valuation also predicted conceptualizations of citizenship as well as feelings of effective community service. For the most part, grade level did not play a significant role in predicting youth's civic orientation. Results are discussed in terms of the literature on social capital and developmental theory.  相似文献   
816.
A number of recent studies have documented rapid changes in behavioural sensory acuity induced by aversive learning in the olfactory and auditory modalities. The effect of aversive learning on the discrimination of low-level features in the visual system of humans remains unclear. Here, we used a psychophysical staircase procedure to estimate discrimination thresholds for oriented grating stimuli, before and after differential aversive learning. We discovered that when a target grating orientation was conditioned with an aversive loud noise, it subsequently led to an improvement of discrimination acuity in nearly all subjects. However, no such change was observed in a control group conditioned to an orientation shifted by ±90° from the target. Our findings cannot be explained by contextual learning or sensitisation factors. The results converge with those reported in the olfactory modality and provide further evidence that early sensory systems can be rapidly modified by recently experienced reinforcement histories.  相似文献   
817.
818.
819.
Imagine I hold up a Granny Smith apple for all to see. You would thereby gain justified beliefs that it was green, that it was apple, and that it is a Granny Smith apple. Under classical foundationalism, such simple visual beliefs are mediately justified on the basis of reasons concerning your experience. Under dogmatism, some or all of these beliefs are justified immediately by your experience and not by reasons you possess. This paper argues for what I call the looks view of the justification of simple visual beliefs. According to the looks view, such beliefs are mediately justified on the basis of reasons concerning how the relevant things look. Unlike under classical foundationalism, under the looks view as I develop it, these reasons are public. They are public with respect to both their content and possession: with respect to content, they are not about ourselves and our experiences, and with respect to their possession, many people can have the very same looks‐related reasons.  相似文献   
820.

The purpose of the present investigation was to compare and contrast sport and business leaders' perceptions regarding what makes for a successful organization. Twenty sport ( N = 10) and business ( N = 10) leaders were interviewed and asked about their perceptions of organizational effectiveness in the area of group dynamics including (a) leadership, (b) group cohesion, and (c) communication. Using qualitative methods, results revealed more similarities than differences, with most sport and business leaders in agreement on the factors relating to organizational success. Specifically, all higher- and lower-order themes were identified by leaders in both areas, the emphasis simply being a matter of degree. Some of the more notable differences included business leaders putting more emphasis on being honest and being a reflective listener, whereas sport leaders emphasize interactions with others and having positive reinforcement in their communications. These similarities and differences are discussed in terms of the extant literature, and future directions for research are offered, such as investigating how to specifically enhance the transfer of skills and principles between sport and business settings.  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