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   4018篇
  免费   2318篇
  国内免费   108篇
  2024年   4篇
  2023年   15篇
  2022年   25篇
  2021年   153篇
  2020年   169篇
  2019年   589篇
  2018年   503篇
  2017年   602篇
  2016年   569篇
  2015年   492篇
  2014年   426篇
  2013年   567篇
  2012年   297篇
  2011年   269篇
  2010年   219篇
  2009年   183篇
  2008年   153篇
  2007年   178篇
  2006年   165篇
  2005年   140篇
  2004年   109篇
  2003年   114篇
  2002年   101篇
  2001年   95篇
  2000年   71篇
  1999年   56篇
  1998年   18篇
  1997年   18篇
  1996年   14篇
  1995年   14篇
  1994年   13篇
  1993年   9篇
  1992年   10篇
  1991年   20篇
  1990年   5篇
  1989年   6篇
  1988年   4篇
  1987年   2篇
  1986年   4篇
  1985年   5篇
  1984年   1篇
  1983年   2篇
  1982年   4篇
  1981年   2篇
  1980年   1篇
  1979年   3篇
  1978年   6篇
  1977年   6篇
  1976年   5篇
  1975年   8篇
排序方式: 共有6444条查询结果,搜索用时 15 毫秒
951.
Past research has found that people of East Asian backgrounds avoid seeking help out of relational concerns. Research on amae, however, suggests that Japanese may use amae to simultaneously obtain the needed help and enhance relationships. Study 1 showed that among Japanese entrepreneurs and managers, the propensity toward amae correlated with perceiving fewer costs of help‐seeking, seeking more help at work, greater engagement in new relationships and higher general trust. These associations suggest that the Japanese may be using amae to get the help they need and to build new relationships. Study 2 further showed that first‐year undergraduates who reported engaging in amae soon after entering college showed a significant increase in sense of purpose and satisfaction with college life in their first year. These findings suggest that, unlike dependency or passive love, amae can be highly adaptive for the Japanese.  相似文献   
952.
Against the backdrop of critical clinical blood shortage in China in recent years, the present research extends the theory of planned behaviour by incorporating two constructs potentially of importance in influencing non‐remunerated blood donation behaviour, namely perceived risk and individual trust in blood collection agencies to predict Chinese people's non‐remunerated blood donation intention and behaviour. A survey was conducted to measure variables of the theory of planned behaviour, and other variables such as experience of non‐remunerated blood donation, perceived risk and individual trust in blood collection agencies. Data to assess non‐remunerated blood donation behaviour were collected via phone interviews. Results of the path analysis are as follows. Subjective norm, perceived behavioural control and individual trust in blood collection agencies are all positively associated with attitudes toward non‐remunerated blood donation, explaining 46.9% of the variance in this variable. Perceived risk is negatively associated with blood donation intention, while subjective norm and attitudes toward non‐remunerated blood donation are both positively associated with blood donation intention. Together, the three variables account for 28.4% of the variance in donation intention. Both having a positive association with non‐remunerated blood donation behaviour, the combination of blood donation intention and donation experience explains 42.8% of its variance.  相似文献   
953.
The rise in psychological problems, attrition, and suicide rates of university students has been linked to the stressful challenges faced during university life. To buffer this, animal assisted activities (AAA) may assist in improving psychological and physiological well‐being in students, however, to date, there is little empirical evidence for their effectiveness. Consequently, this study explored the psychological and physiological benefits of AAA in a sample of undergraduate students. Sixty‐two students from two local universities participated in an hour‐long AAA session delivered by Therapy Dogs Singapore. Measures of perceived stress, anxiety, state self‐esteem, and blood pressure (BP) were taken before and after the sessions. The results indicated that students experienced significant decreases in state anxiety, systolic, and diastolic BP post AAA, and when compared to a quiet reading comparison session. State self‐esteem increased post AAA and, further, was found to moderate the change in anxiety in addition to perceived stress, whereby perceived anxiety reduced more in those with low state self‐esteem and high perceived stress. These results suggest that AAA can be an effective intervention for stress among undergraduate students, which utilizes a novel, easy to implement and enjoyable approach for Singaporean students.  相似文献   
954.
Background: nursing students are required to think reflectively in both real and simulated clinical practice. Although the Reflective Thinking instrument is reliable in its measurement of reflective thinking, its validity is unknown. Method: confirmatory factor analysis was undertaken in an iterative manner within a non-equivalent control-group study to measure nursing students’ reflective thinking and satisfaction with high-fidelity simulation. The validity and reliability of the Reflective Thinking instrument was tested. Results: the resulting instrument consisted of 15 items across four factors. The final model was plausible as it demonstrated ‘goodness of fit’; however, it had neither convergent or discriminatory validity, nor reliability. Internal consistency was fair to reasonable for the four subscales. Conclusion: the testing of the Reflective Thinking instrument using confirmatory factor analysis is a vital initial step in the modification of this instrument. Further development using exploratory factor analysis will enhance the instrument’s relevance within high-fidelity simulation.  相似文献   
955.
This research investigated the role of a commercial program, Michelle Bridges 12 Week Body Transformation (MB12WBT), that uses a variety of tools including social support to influence weight management behaviours such as exercising and eating healthfully. The need for research into weight management remains current given obesity rates have continued to increase in recent decades. Weight management is a complex behaviour that for many consumers involves barriers that influence their commitment to continue exercising and eating healthily. The Theory of Planned Behaviour is frequently used to explain, and to a lesser extent predict, behaviours such as physical activity and healthy eating; however, there is much debate as to whether a perceived behavioural control variable or self‐efficacy is the best predictor of behaviour. Structural equation modelling was used to analyse data from a sample of 724 respondents who answered a baseline and three month follow‐up survey. The analysis revealed self‐efficacy and perceived behavioural control were two distinct constructs. Self‐efficacy was a better predictor of behaviour than perceived behavioural control variables as suggested in the original Theory of Planned Behaviour. Furthermore, self‐efficacy had a significant impact on exercising and eating healthfully behaviour. The findings and implications for both behaviour change theory and practice are discussed.  相似文献   
956.
This research examines how identity related goals influence product evaluation. It is proposed that products are evaluated based on an attribute level to fulfill an identity related goal. Further, the positive relationship between an attribute level and product evaluation is strengthened by goal activation (the degree to which a goal occupies a consumer's thinking) and goal‐product fit (the extent to which consumers think a product is related to a particular goal). Results of three experimental studies support the above propositions. The research makes contributions in that it identifies two moderators, that is, goal activation and goal‐product fit, in the relationship between attributes ability and product evaluation. First, identity‐related goals are higher order and likely to have higher priority for consumers. However, results in this paper show that it still needs to be activated before it can exert an influence on attribute importance. Specifically, when an identity related goal (e.g., one supportive of the fair trade goal) is activated, it takes over a lower‐order goal (e.g., seek for a good taste or a good priced coffee in this case). As goal activation increases, relevant attributes become more important, and the positive relationship between an attribute level and product evaluation strengthens. Second, this paper introduces a new construct of goal‐product fit into identity‐related goals and product evaluation literature. The results of study three suggest that when goal‐product fit becomes stronger, the relevant attribute that can fulfill the goal becomes more important in the overall product evaluation.  相似文献   
957.
The present study examined the emergence of antisocial lie‐telling in very young children. Lie‐telling was studied in relation to executive functioning skills and children's abilities to identify both truths and lies. A total of 65 children (Mage in months = 31.75, SD = 1.87) participated in a modified temptation resistance paradigm (TRP; designed to elicit spontaneous lies). Executive functioning was measured through an inhibitory control task and a forward search planning task. The Truth/Lie Identification task was administered (Lyon, Carrick, & Quas, 2010 ) to measure children's abilities to accurately distinguish truths and lies. During the TRP, a total of 89.23% children peeked at the toy when a research assistant left the room, and of those children, 29.31% lied to the research assistant. Significant differences on executive functioning measures were found between lie‐tellers and confessors, as well as for the Truth/Lie Identification task. Lie‐tellers had higher scores on measures of inhibitory control and forward search planning. Lie‐tellers also had higher accuracy on the Truth/Lie Identification task than confessors. This study provides a unique contribution to the literature by examining 2.5‐year‐old children's emerging lie‐telling abilities, a relatively understudied age during which fledgling lie‐telling emerges. Copyright © 2016 John Wiley & Sons, Ltd.  相似文献   
958.
959.
Maternal questions play a crucial role in early language acquisition by virtue of their special grammatical, prosodic and lexical forms, and their abundance in the input. Infants are able to discriminate questions from other sentence types and produce rising intonations in their own requests. This study examined whether caregiver questions were related to the quantity of infant vocalizations. Thirty‐six infants aged 10 and 14 months participated in a laboratory play session with their mothers. In separate blocks, mothers were instructed to ask questions and to refrain from asking questions. Both block‐level and utterance‐level analyses found no evidence that maternal questions affected the amount of infant‐response vocalizations. Mothers of 14‐month‐olds (but not 10‐month‐olds) tended to repeat questions. Copyright © 2016 John Wiley & Sons, Ltd.  相似文献   
960.
为考察样例类型与解释方式对初中生数学概率问题解决的促进作用,实验1随机选取初中生90名,比较正确样例组、正误样例组、对照组的学习效果,实验2随机选取另外90名初中生,比较有教学解释、有自我解释与无解释的正误样例组的即时与延时测试学习效果,研究发现:(1)正误样例学习效果显著好于正确样例;(2)有解释的正误样例学习效果显著好于无解释的正误样例;(3)与有教学解释的正误样例学习效果相比,有自我解释的正误样例学习效果显著且更持久。  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