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   1832篇
  免费   62篇
  2023年   11篇
  2022年   11篇
  2021年   22篇
  2020年   25篇
  2019年   32篇
  2018年   47篇
  2017年   53篇
  2016年   60篇
  2015年   46篇
  2014年   44篇
  2013年   202篇
  2012年   97篇
  2011年   85篇
  2010年   60篇
  2009年   59篇
  2008年   65篇
  2007年   84篇
  2006年   61篇
  2005年   64篇
  2004年   62篇
  2003年   58篇
  2002年   70篇
  2001年   27篇
  2000年   24篇
  1999年   27篇
  1998年   34篇
  1997年   29篇
  1996年   26篇
  1995年   24篇
  1994年   24篇
  1993年   18篇
  1992年   20篇
  1991年   18篇
  1990年   15篇
  1989年   19篇
  1988年   19篇
  1987年   13篇
  1986年   15篇
  1985年   20篇
  1984年   18篇
  1983年   19篇
  1982年   21篇
  1981年   14篇
  1980年   14篇
  1979年   15篇
  1978年   15篇
  1977年   13篇
  1976年   12篇
  1975年   9篇
  1973年   16篇
排序方式: 共有1894条查询结果,搜索用时 15 毫秒
161.
162.
This article describes an approach for assessing and comparing complex cognition in rhesus monkeys and pigeons by training them in a sequence of synergistic tasks, each yielding a whole function for enhanced comparisons. These species were trained in similar same/different tasks with expanding training sets (8, 16, 32, 64, 128 … 1024 pictures) followed by novel‐stimulus transfer eventually resulting in full abstract‐concept learning. Concept‐learning functions revealed better rhesus transfer throughout and full concept learning at the 128 set, versus pigeons at the 256 set. They were then tested in delayed same/different tasks for proactive interference by inserting occasional tests within trial‐unique sessions where the test stimulus matched a previous sample stimulus (1, 2, 4, 8, 16 trials prior). Proactive‐interference functions revealed time‐based interference for pigeons (1, 10 s delays), but event‐based interference for rhesus (no effect of 1, 10, 20 s delays). They were then tested in list‐memory tasks by expanding the sample to four samples in trial‐unique sessions (minimizing proactive interference). The four‐item, list‐memory functions revealed strong recency memory at short delays, gradually changing to strong primacy memory at long delays over 30 s for rhesus, and 10 s for pigeons. Other species comparisons and future directions are discussed.  相似文献   
163.
164.
165.
166.
Criminological examination of substance use is common in the extant literature; however, little research has examined heroin use among adolescents. Recent trends in drug use indicate a rise of heroin among adolescents indicating a need to provide theoretical explanations of this phenomenon. This study examines the efficacy of social learning theory and social bond theory to explain heroin use. The study uses a nationally representative sample of adolescents from the Monitoring the Future Survey (N = 2,465). The results support the central arguments from social structure social learning theory. First, the results show that social structure components have links with heroin use. Second, the results show that social learning theory mediates the effect of social structure measures on heroin use. The results are discussed.  相似文献   
167.
This literature review attempts to interface counselling with alternative legal practice. The authors proceed by contrasting the adversarial nature of litigation with the conciliatory nature of alternative dispute resolution (ADR) with a view to encouraging seekers of dispute resolution to opt for ADR in lieu of litigation. The paper discusses the Ubuntu world view in conflict resolution in relation to ADR practices. While not presenting ADR as a replacement for litigation nor proscribing litigation in itself, this paper prescribes the use of ADR to arrive at settlements that are more satisfactory and longer lasting. The paper finally shows how counsellors and guidance professionals may be involved in ADR processes to effectively give succour to conflicting parties.  相似文献   
168.
We developed a Spanish‐language version of the Questions About Behavioral Function (QABF) utilizing a forward‐adaptation and back‐adaptation translation process. Subsequently, we administered the assessment with 80 bilingual participants to assess the reliability and validity of the instrument. Results demonstrated that the Spanish version of the QABF was both reliable (i.e., was internally consistent) and valid (i.e., identified the correct function). Implications and future research are discussed. Copyright © 2014 John Wiley & Sons, Ltd.  相似文献   
169.
170.
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