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   3189篇
  免费   268篇
  国内免费   24篇
  2024年   6篇
  2023年   30篇
  2022年   43篇
  2021年   94篇
  2020年   127篇
  2019年   111篇
  2018年   115篇
  2017年   172篇
  2016年   153篇
  2015年   167篇
  2014年   198篇
  2013年   511篇
  2012年   85篇
  2011年   229篇
  2010年   132篇
  2009年   230篇
  2008年   246篇
  2007年   234篇
  2006年   111篇
  2005年   73篇
  2004年   54篇
  2003年   60篇
  2002年   35篇
  2001年   18篇
  2000年   23篇
  1999年   14篇
  1998年   13篇
  1997年   8篇
  1996年   3篇
  1995年   4篇
  1994年   8篇
  1993年   12篇
  1992年   6篇
  1991年   4篇
  1989年   4篇
  1988年   2篇
  1986年   2篇
  1985年   9篇
  1984年   14篇
  1983年   10篇
  1982年   21篇
  1981年   11篇
  1980年   11篇
  1979年   10篇
  1978年   14篇
  1977年   8篇
  1976年   6篇
  1975年   13篇
  1974年   9篇
  1973年   7篇
排序方式: 共有3481条查询结果,搜索用时 31 毫秒
981.
Elite swimmers are individual athletes competing mostly on their own. However, when competing in a relay team, they are exposed to social influences possibly leading to effort gains compared to their individual performance. This study investigated effort gains in relay team members during 4 × 100 m freestyle races of Olympic Games and World Championships across the past 20 years. We assumed increasing effort gains in swimmers competing on later serial positions within their relay team since weaknesses in their performances can increasingly less be compensated by their teammates (social indispensability). Furthermore, we assumed a stronger gain in female athletes since females have been shown to be more affected by social indispensability then males. Using linear mixed modelling analyses, we additionally examined the moderating impact of the relay team outcome (i.e. medal-winning chance) on effort gains and indispensability effects while accounting for current team rankings at change-over. Except for the first swimmer, overall effort gains in relay performances were found as compared to performances in individual races during the same championship. Furthermore, these gains were close to equally distributed among both laps of the 100 m distance. However, even though effort gains are tending to be most pronounced for the last relay team swimmer we failed to detect any significant indispensability effect in our data set. Noteworthy, female swimmers showed larger effort gains when winning a medal (based on the current team rankings) was likely. In contrast, males showed effort gains irrespective of the serial order within the relay team and medal chance. Consequently, tentative recommendations are derived on how to line up a relay team.  相似文献   
982.
Studies on normative feedback have shown superior motor learning outcomes for individuals who believe that they are performing better than others through increased self-efficacy. Nevertheless, the effects of normative feedback were never dissociated from the knowledge of results (KR) provided to the learners which potentially interacts with self-efficacy as well. Thus, we investigated whether the effects of normative feedback on motor learning, associated with self-efficacy, would be dependent on the amount of KR provided. Fifty-six participants were randomly assigned to four experimental groups in terms of KR frequency (100% and 33%) and normative feedback (positive and negative). In the acquisition phase, all groups received the average KR of their performance at the end of each block of trials (True feedback) and a fake KR based on their own performance (but said to be from a group of participants who practiced the same task) (False Feedback). The False Feedback indicated better or worse performance of the participant in comparison to the fake group, depending on their experimental group. Retention tests were performed immediately and after 24 h from the acquisition phase. To measure self-efficacy, a questionnaire on participant's efficacy was applied before the first block, after each block of trials and before the retention tests. The results revealed superiority of positive normative feedback and 100% KR frequency, compared to negative normative feedback and 100% KR frequency in the 24h retention test. No difference was found between the groups with a frequency of 33% of KR (positive and negative). All groups increased self-efficacy during practice, but there was no difference between groups at any stage of the study. We conclude that the effects of normative feedback on motor learning are dependent on the KR frequency. However, they were not associated with self-efficacy.  相似文献   
983.
For many athletes, retirement from higher levels of competitive sport poses significant challenges. Research has shown that athletic identity is a key predictor of adjustment trajectories, but the mechanisms through which this affects outcomes are less clear. Added to this, there has been limited research on the role that wider social identities, and the resources they enable, play in adjustment. Addressing both these issues, we examined theoretically derived social identity pathways to retirement adjustment in athletes who had played sport at higher competitive levels and two potential mechanisms, or psychological resources, through which adjustment might be enabled. This was examined in two samples: retired athletes from countries in Western (n = 215) and Eastern (n = 183) regions. Loss of athletic identity, social group memberships (multiple, maintained and new), psychological resources (perceived meaning in life and control), and adjustment (life satisfaction, depression, and perceived physical health) were assessed. In both samples, the loss of athletic identity undermined adjustment by reducing meaning in life and perceived control. Path analysis showed that both maintained and gained social group memberships counteracted the negative effects of athletic identity loss on adjustment. Evidence that these pathways enabled access to psychological resources was found primarily in Chinese athletes, with maintained groups influencing personal control and new groups influencing meaning in life. These findings highlight the importance of social identity processes to retirement from higher levels of competitive sport and the mechanisms through which they can either support or undermine adjustment.  相似文献   
984.
Plants provide unique opportunities for learning by engaging all human senses. Recent laboratory studies have shown that infants use a combination of behavioural avoidance and social learning strategies to safely learn about plant properties from adults. Here we investigate how infants and their caregivers interact with plants in an outdoor garden as a first step towards examining the operation of these social learning processes in naturalistic settings. We focus on two specific aspects of spontaneous infant-caregiver interactions with plants: olfactory and touch behaviours. Additionally, we look at whether infants' and caregivers’ prior knowledge of the plants in our study influences infants’ behaviour. Our results showed a multifaceted connection between infants’ and caregivers' previous experience with the plants and their olfactory and touch behaviours. First, infants tended to touch and smell the plants after their caregivers did, and this appeared to be independent of whether infants had seen the plant before. Second, infants systematically engaged in some of the same types of olfactory and touch behaviours their caregiver displayed towards plants. Finally, infants whose caregivers were given more information about the plants in the study showed fewer touch behaviours, but no difference in olfactory behaviours. These findings bolster the previous laboratory studies of plant learning early in life, highlighting the importance of olfactory behaviours, and underscoring the benefits of using ecological observations to explore unique aspects of human development.  相似文献   
985.
Social desirability may cause spurious relations in self-rating measures. The present study sought to disentangle socially desirable responding and content in the relation between measures of personality traits and well-being. Social desirability was operationalized as the evaluative factor (the tendency to react to evaluative content in questionnaire items). We collected self- and peer-ratings of personality and self-ratings of well-being from 219 participants. The evaluative factor in personality self-ratings significantly predicted well-being and explained more variance than all Big Five traits combined. The evaluative factor in personality peer-ratings had no unique relation to well-being. These findings suggest that previous estimates of the relationship between personality traits and well-being have generally been exaggerated. Different methods of accounting for social desirability are discussed.  相似文献   
986.
987.
988.
989.
990.
Power is one of the vital components embedded within interpersonal interactions, but few studies have studied it in everyday life context. This experience sampling study examined the associations of subjective power with emotional well-being and investigated the moderating effects of counterpart' postures in the associations. Our results demonstrated that individuals reported higher positive emotions and lower negative emotions when they perceived higher subjective power. Their positive emotions were positively correlated with counterparts' expansive postures while negative emotions were positively correlated with counterparts' constrictive postures. The subjective power-negative emotion associations were stronger when counterparts displayed higher level of constrictive posture. Our findings provide an evidence base for a comprehensive understanding on the role of subjective power and perception of counterparts' power-related posture in dyadic communications in emotional well-being.  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