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   2530篇
  免费   327篇
  国内免费   507篇
  3364篇
  2024年   5篇
  2023年   103篇
  2022年   111篇
  2021年   125篇
  2020年   151篇
  2019年   228篇
  2018年   209篇
  2017年   174篇
  2016年   178篇
  2015年   108篇
  2014年   163篇
  2013年   428篇
  2012年   101篇
  2011年   95篇
  2010年   106篇
  2009年   88篇
  2008年   97篇
  2007年   98篇
  2006年   95篇
  2005年   110篇
  2004年   90篇
  2003年   82篇
  2002年   83篇
  2001年   60篇
  2000年   44篇
  1999年   32篇
  1998年   36篇
  1997年   24篇
  1996年   24篇
  1995年   25篇
  1994年   27篇
  1993年   14篇
  1992年   11篇
  1991年   8篇
  1990年   6篇
  1989年   3篇
  1988年   3篇
  1987年   3篇
  1986年   2篇
  1985年   5篇
  1984年   5篇
  1982年   2篇
  1981年   1篇
  1977年   1篇
排序方式: 共有3364条查询结果,搜索用时 15 毫秒
971.
Given the range of pre-exposure prophylaxis (PrEP) products currently being tested to prevent HIV in women, a standardized Acceptability and Use of PrEP Products Among Women Tool may facilitate comparisons of product acceptability and use across different geographies, trials, and users. We conducted three rounds of cognitive interviewing over 2 months in 2016, with 28 South African women who had experience participating in a range of PrEP product trials. The final instrument contained 41 items, including five new items that improved construct validity and 22 items modified for clarity. Changes were made due to unclear wording, difficulty answering, participant embarrassment, low response variability, and administrative formatting. Cognitive interviewing provided a means to address issues that would have inhibited this tool's ability to accurately collect data otherwise. This rapid, low-cost study provided valuable insight into participants' understanding of questions and demonstrated the utility of cognitive interviewing in international clinical trials.  相似文献   
972.
People can make pointing gestures and tracing actions with the index finger with little or no conscious effort. From the perspective of cognitive load theory, such “biologically primary” gestures and actions might help people learn “biologically secondary” concepts and skills requiring extended cognitive effort, such as reading, science, or mathematics. Studies on tracing or tracing and pointing have yielded mixed findings regarding hypothesized effects on intrinsic and extraneous cognitive load. The present study investigated whether computer-based instructions to trace elements of worked examples on angle relationships would affect school students' (N = 106) self-reports of intrinsic and extraneous cognitive load, as well as problem-solving transfer test performance. The tracing effect on transfer posttests seen in prior studies was replicated, but cognitive load hypotheses were not supported. Implications for educational practice and future research are discussed.  相似文献   
973.
The Cognitive Reflection Test (CRT) is among the most common and well-known instruments for measuring the propensity to engage reflective processing, in the context of the dual-process theory of high-level cognition. There is robust evidence that men perform better than women on this test—but we should be wary to conclude that men are more likely to engage in reflective processing than women. We consider several possible loci for the gender difference in CRT performance, and use mathematical modeling to show, across two studies, that the gender difference in CRT performance is more likely due to women making more mathematical mistakes (partially explained by their greater mathematics anxiety) than due to women being less likely to engage reflective processing. As a result, we argue that we need to use gender-equivalent variants of the CRT, both to improve the quality of our instruments and to fulfill our social responsibility as scientists.  相似文献   
974.
The cognitive processes involved in route retracing are not well known. This study aims to highlight them in an elderly population in which contradictory results have been obtained, certain studies showing specific difficulties for route retracing, others not. Thirty-nine elderly subjects performed a route-learning task (forward-backward) in a garden, then completed spatial knowledge tasks and standardised cognitive tests. Results show four factors that were predictive of route retracing performance: route repetition, the pointing task, and two standardised cognitive tests, one assessing spatial working memory, and another global cognitive efficiency. According to these results, route retracing involves route and survey knowledge (i.e., egocentric and allocentric strategy), and the integration of forward-backward perspectives is underpinned by the spatial working memory. Moreover, the subjects did not make more errors in route retracing than in the route repetition task, suggesting that a real environment could compensate for a failing allocentric strategy.  相似文献   
975.
Decades of research has shown that example-based learning is an effective instructional strategy for learning new skills. The field of learning from examples is seeing a shift in focus towards more innovative and use-inspired research, in part because the use of examples for informal and formal learning purposes has mushroomed. This special issue comprises a set of eight papers in which students learned a procedural skill from worked examples or modeling examples. Each study characterizes a recent development towards more innovative example-based learning research. These developments are: (a) the integration of social-cognitive and cognitive example research, (b) the integration of example-based learning and analogical reasoning research, (c) the extension of traditional Cognitive Load Theory effects, (d) a greater focus on learning from (productive) errors, and (e) more research on individual differences. This special issue concludes with insightful commentary articles written by Prof. Dr. Katharina Scheiter and Prof. Dr. Richard Mayer.  相似文献   
976.
We describe a social-cognitive model explaining processing of cognitive dissonance resulting from being told by someone that a vividly remembered event did not actually occur. The model proposes that receiving challenges to one's recollection of events results in both intrapersonal and interpersonal cognitive dissonance. Rememberers process intrapersonal dissonance by weighing features of memory representations against the qualities of the feedback, and they process interpersonal elements by weighing the potential costs of agreeing or disagreeing with the challenger within the social dynamics of the relationship. To resolve the dissonance, people will either maintain or reduce belief in occurrence for the event, and will agree or disagree with the challenger. We explore factors that can influence dissonance and how they impact the rememberers' beliefs in occurrence of the event and their interaction with challengers in terms of defending or relinquishing their memory, and we discuss preliminary data confirming some of these factors.  相似文献   
977.
978.
979.
980.
The authors develop and evaluate an online networking intervention, Building Relationships and Improving Opportunities (BRIO), built in conjunction with the networking literature and social cognitive theory (Bandura, 1986, 1999). A field experiment using 491 unemployed job seekers shows that the intervention increases networking intensity, networking self-efficacy, and proximal networking benefits. Further, the intervention generates higher quality reemployment through its positive effects on networking self-efficacy. Individuals who completed the intervention and were also lower in extraversion showed the most positive improvements in networking self-efficacy and reemployment quality. The study advances the literature by uncovering the mechanisms through which a networking intervention may result in improved reemployment success, and demonstrating the moderating role of individual differences in affecting intervention outcomes. The study helps practice by providing a publicly available, research-based training to improve job search networking.  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