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   1108篇
  免费   104篇
  2024年   2篇
  2023年   12篇
  2022年   15篇
  2021年   32篇
  2020年   39篇
  2019年   41篇
  2018年   62篇
  2017年   53篇
  2016年   70篇
  2015年   51篇
  2014年   58篇
  2013年   144篇
  2012年   84篇
  2011年   81篇
  2010年   40篇
  2009年   41篇
  2008年   65篇
  2007年   54篇
  2006年   46篇
  2005年   43篇
  2004年   34篇
  2003年   33篇
  2002年   31篇
  2001年   12篇
  2000年   8篇
  1999年   16篇
  1998年   6篇
  1997年   5篇
  1996年   6篇
  1995年   5篇
  1994年   6篇
  1993年   4篇
  1992年   1篇
  1991年   1篇
  1990年   1篇
  1988年   3篇
  1987年   1篇
  1985年   1篇
  1978年   1篇
  1973年   1篇
  1972年   1篇
  1970年   1篇
  1965年   1篇
排序方式: 共有1212条查询结果,搜索用时 15 毫秒
851.
The objective of this study was to investigate the relationships between household hunger, standard of living and satisfaction with life in a rural South African setting. Respondents were 442 randomly selected community dwellers from Alice, in the Eastern Cape (Xhosa speaking = 89.32%, females = 67%; age range 40–49 years). Multiple regression analysis was utilised to predict satisfaction with life from household hunger and standard of living. Low levels of household hunger, and low to moderate living standards predicted satisfaction with life. Resource support interventions with vulnerable communities should focus on poverty alleviation measures aimed at improving subjective satisfaction levels.  相似文献   
852.
Panic attacks (PAs) are characterized by overwhelming surges of fear and discomfort and are one of the most frequently occurring symptoms in psychiatric populations. The most recent version of the Diagnostic and Statistical Manual of Mental Disorders (i.e. DSM-5) allows for a panic attack (PA) specifier for all disorders, including social anxiety disorder (SAD). However, there is little research examining differences between individuals diagnosed with SAD with the PA specifier versus individuals diagnosed with SAD without the PA specifier. The current study examined social anxiety, mood, anxiety, and anxiety sensitivity social concerns, a risk factor for social anxiety in SAD-diagnosed individuals without (N = 52) and with (N = 14) the PA specifier. The groups differed only in somatic symptoms of anxiety. Result of the current study provides preliminary evidence that the presence of the PA specifier in social anxiety does not result in elevated levels of comorbidity or a more severe presentation of social anxiety.  相似文献   
853.
This paper has 2 purposes: (a) to present the differences in demographic and health characteristics of older women volunteers and nonvolunteers in a community‐based sample; (b) to identify the motivations of current and past volunteers, as contrasted with those who have never volunteered. A population‐based survey was conducted with a sample of 1,104 women aged 50 to 80 years in the state of Washington. Nonvolunteers were less likely to be married and were slightly less likely to be White than were current or past volunteers. Demographic variables (e. g., age) and health status predicted level of reported motivation for volunteering. These data provide us with population‐based estimates of volunteering and motivations for older women.  相似文献   
854.
There are relatively few community-based epidemiological studies in which correlates of depressive disorders were identified through multivariate analyses in children and adolescents aged 6--14 years. Moreover, several family characteristics (e.g., parent-child relationship) have never been explored in this regard. The purpose of this study was twofold. Using data from the Quebec Child Mental Health Survey, it sought: (1) to identify psychosocial correlates associated with depressive disorder in two age-groups (6--11 and 12-14 years) according to informant (child/adolescent, parent); and (2) to interpret the relative importance of correlates by ranking variables according to strength and consistency of association across age-groups. Logistic regression models show correlates to be inconsistent across informants. The ranking of correlates indicates a major contribution of only-child status/ordinal position, parent's major depressive disorder, stressful family events, and parent-child relationship, thereby supporting the hypothesis of the relevance of family context in the development of depression.  相似文献   
855.
The ability to navigate without vision towards a previously seen target has been extensively studied, but its reliability over time has yet to be established. Our aims were to determine distance and direction errors made during blind navigation across four different directions involving three different gait patterns (stepping forward, stepping sideway, and stepping backward), and to establish the test-retest reproducibility of these errors. Twenty young healthy adults participated in two testing sessions separated by 7 days. They were shown targets located, respectively, 8 m ahead, 8 m behind, and 8 m to their right and left. With vision occluded by opaque goggles, they walked forward (target ahead), backward (target behind), and sideway (right and left targets) until they perceived to be on the target. Subjects were not provided with feedback about their performance. Walked distance, angular deviation, and body rotation were measured. The mean estimated distance error was similar across the four walking directions and ranged from 16 to 80 cm with respect to the 8 m target. In contrast, direction errors were significantly larger during sideway navigation (walking in the frontal plane: leftward, 10 degrees +/- 15 degrees deviation; rightward, 18 degrees +/- 13 degrees) than during forward and backward navigation (walking in the sagittal plane). In general, distance and direction errors were only moderately reproducible between the two sessions [intraclass correlation coefficients (ICCs) ranging from 0.682 to 0.705]. Among the four directions, rightward navigation showed the best reproducibility with ICCs ranging from 0.607 to 0.726, and backward navigation had the worst reliability with ICCs ranging from 0.094 to 0.554. These findings indicate that errors associated with blind navigation across different walking directions and involving different gait patterns are only moderately to poorly reproducible on repeated testing, especially for walking backward. The biomechanical constraints and increased cognitive loading imposed by changing the walking pattern to backward stepping may underlie the poor performance in this direction.  相似文献   
856.
Previous studies have indicated that as many as 25% to 50% of applicants in organizational and educational settings are retested with measures of cognitive ability. Researchers have shown that practice effects are found across measurement occasions such that scores improve when these applicants retest. In this study, the authors used meta-analysis to summarize the results of 50 studies of practice effects for tests of cognitive ability. Results from 107 samples and 134,436 participants revealed an adjusted overall effect size of .26. Moderator analyses indicated that effects were larger when practice was accompanied by test coaching and when identical forms were used. Additional research is needed to understand the impact of retesting on the validity inferences drawn from test scores.  相似文献   
857.
We demonstrate in two experiments that real and imagined body movements appropriate to metaphorical phrases facilitate people's immediate comprehension of these phrases. Participants first learned to make different body movements given specific cues. In two reading time studies, people were faster to understand a metaphorical phrase, such as push the argument, when they had previously just made an appropriate body action (e.g., a push movement) (Experiment 1), or imagined making a specific body movement (Experiment 2), than when they first made a mismatching body action (e.g., a chewing movement) or no movement. These findings support the idea that appropriate body action, or even imagined action, enhances people's embodied, metaphorical construal of abstract concepts that are referred to in metaphorical phrases.  相似文献   
858.
Given the widespread interest in the development of children's selective social learning, there is mounting evidence suggesting that infants prefer to learn from competent informants (Poulin‐Dubois & Brosseau‐Liard, Current Directions in Psychological Science, 2016, 25). However, little research has been dedicated to understanding how this selectivity develops. The present study investigated whether causal learning and precursor metacognitive abilities govern discriminant learning in a classic word‐learning paradigm. Infants were exposed to a speaker who accurately (reliable condition) or inaccurately (unreliable condition) labeled familiar objects and were subsequently tested on their ability to learn a novel word from the informant. The predictive power of causal learning skills and precursor metacognition (as measured through decision confidence) on infants' word learning was examined across both reliable and unreliable conditions. Results suggest that infants are more inclined to accept an unreliable speaker's testimony on a word learning task when they also lack confidence in their own knowledge on a task measuring their metacognitive ability. Additionally, when uncertain, infants draw on causal learning abilities to better learn the association between a label and a novel toy. This study is the first to shed light on the role of causal learning and precursor metacognitive judgments in infants' abilities to engage in selective trust.  相似文献   
859.
Science and Engineering Ethics - This paper makes a conceptual inquiry into the notion of ‘publics’, and forwards an understanding of this notion that allows more responsible forms of...  相似文献   
860.
ABSTRACT

The relationship between race and just about any social issue has been and continues to be controversial. Within the context of literature on public opinion regarding sports and social movements, this study considers the intersections between race, business, and athlete activism by examining attitudes related to Nike’s controversial advertisement campaign with former NFL quarterback Colin Kaepernick. Results obtained from a sample of young adults reveals a deep racial divide between black and non-black respondents. At almost a ratio of 2:1, blacks were more likely to agree with Nike’s decision to use the former player in their advertisement, that Nike should address social issues in their ads, and that Nike should contribute to his charity. These race differences remain in models that control for a variety of other correlates, including political orientation, income, discrimination, player protests, and whether they watch the NFL.  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