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   1157篇
  免费   73篇
  1230篇
  2023年   17篇
  2021年   24篇
  2020年   37篇
  2019年   40篇
  2018年   46篇
  2017年   43篇
  2016年   43篇
  2015年   26篇
  2014年   29篇
  2013年   149篇
  2012年   45篇
  2011年   52篇
  2010年   15篇
  2009年   30篇
  2008年   36篇
  2007年   28篇
  2006年   36篇
  2005年   26篇
  2004年   17篇
  2003年   20篇
  2002年   20篇
  2001年   9篇
  2000年   12篇
  1999年   10篇
  1998年   11篇
  1997年   17篇
  1996年   10篇
  1991年   9篇
  1990年   16篇
  1989年   10篇
  1988年   8篇
  1987年   10篇
  1986年   13篇
  1985年   10篇
  1984年   11篇
  1983年   9篇
  1982年   21篇
  1981年   17篇
  1980年   10篇
  1979年   10篇
  1978年   13篇
  1977年   12篇
  1976年   15篇
  1975年   14篇
  1974年   16篇
  1973年   9篇
  1965年   9篇
  1964年   10篇
  1962年   8篇
  1961年   9篇
排序方式: 共有1230条查询结果,搜索用时 15 毫秒
191.
The hardware and software for a computer-controlled training and testing system for primates are described. The computer (DDP-116 in the Computer-Controlled Psychology Laboratory at Carnegie-Mellon University) controls all stimulus presentation, reinforcement, and records data in a form ready for analysis on a larger computer.  相似文献   
192.
An experiment was carried out to test the hypothesis that performance on a task which involves a shift of attention between spatially separated sources would be lower under noise conditions than one which involved no such shift. The results indicated that the hypothesis was not proved; rather they showed that the subject's performance on the shift of attention task was better under noise than under quiet. An attempt is made to put forward possible reasons for this occurrence.  相似文献   
193.
In a free-responding situation in which reinforcements are scheduled by a variable interval program, the durations of reinforced inter-response times are shown to be a function of the durations of all inter-response times produced by S and of the frequency of reinforcement.Based on a portion of the author's doctoral dissertation, and supported in part by an NIMH predoctoral research fellowship. Suggestions by W. K. Estes increased the intelligibility of this paper.  相似文献   
194.
This study examines how religion's impact on Americans’ attitudes toward same‐sex practices varies by the type of practice being considered. We theorize that same‐sex romantic and family practices such as sexual relations, marriage, and adoption represent distinct practice types, differing in degrees of legality, cultural legitimacy, and in their internal power dynamics. Consequently, we expect that Americans view each practice type somewhat differently and their opinions on each may be influenced by religion in distinctive ways. Drawing upon national‐level data, we estimate and compare the relative net effects of a comprehensive battery of religious measures on support for gay sex, marriage, and adoption, both for the full sample and across religious traditions. Analyses demonstrate that public opinion toward gay sexual relations is more strongly related to religious practice and theological conservatism compared to attitudes regarding same‐sex marriage or adoption. Moreover, frequent religious practice and conservative theological beliefs about the Bible tend to be more strongly associated with attitudes toward same‐sex relationships for evangelicals, compared to mainline Protestants and, to a lesser extent, Catholics. Findings ultimately affirm that the type of same‐sex practice being considered (sex, marriage, or adoption) serves to moderate religions’ impact on Americans’ support for such practices.  相似文献   
195.
Institutional religious involvement wanes during young adulthood, but evidence suggests life‐course factors such as family formation bring people back to religion. Using the National Longitudinal Study of Adolescent to Adult Health (Waves 1, 3, and 4), we examine how often young adults who were involved in institutional religion as adolescents return—measured by religious service attendance and religious affiliation—after leaving in emerging adulthood, and how this return is patterned by family formation. The majority of young adults who leave do not return to regular religious service attendance, regardless of their family formation. But single parents, married parents, and childless married individuals are more likely, and childless cohabiting couples less likely, to return to religious communities than those who are both single and childless. Only married parents are more likely than childless singles to reaffiliate, though there is marginal evidence that childless married adults may also be more likely. Thus, the institutions of religion and family are still linked, even though overall levels of religious return are not as high as expected.  相似文献   
196.
This study examines the impact of maternal depression on reductions in children’s behavior problems severity following implementation of the Brief Behavioral Intervention—a brief, manualized parent management training treatment. The parents of 87 children aged 2–6 years of age received parent management training at a metropolitan hospital. Parents of participants completed measures of externalizing behavior and maternal depression. The association between pre-post treatment change in externalizing behavior and maternal depression was examined using an autoregressive cross-lagged model. Results showed that self-reported maternal depressive symptoms at pre-treatment negatively influenced the overall magnitude of reduction of reported externalizing behaviors in children following treatment. Results indicate that aspects of family functioning not specifically targeted by parent management training, such as maternal depression, significantly affect treatment outcomes. Clinicians providing parent management training may benefit from assessing for maternal depression and modifying treatment as indicated.  相似文献   
197.
This study investigated the prediction of burnout from job characteristics, emotional intelligence, motivation and pay among bank employees. It also examined the interactions of emotional intelligence, motivation, pay and job characteristics in the prediction of burnout. Data obtained from 230 (Males = 127, Females = 103) bank employees were analysed using Pearson's Product Moment Correlation and multiple regression analysis. Results showed that theses variables jointly and separately negatively predicted burnout components. The results further indicated that emotional intelligence, motivation and pay separately interacted with some job characteristic components to negatively predict some burnout components. The findings imply that emotional intelligence, motivation and pay could be considered by counsellors when designing interventions to reduce burnout among bank employees.  相似文献   
198.
199.
Justifying intellectual property on the basis of labour is an understandably popular strategy, but there is a tension in basing some intellectual property claims on labour that has gone largely unnoticed in treatments of the subject: many forms of innovation cause people to lose their jobs, which seriously hampers the ability of those who lose work to productively use their own labour. This article shows that even under Lockean and other labour-based justifications of intellectual property rights those who claim property rights to innovations of this type have special obligations to compensate those who lose work because of their inventions. By examining the problem that such innovations create, I hope to contribute to larger debates about automation and the job losses it often brings. Lockean and other labour-based theories of intellectual property are generally taken to secure strong, noninstrumental rights to intellectual property if they are successful. So, if even these theories imply that those who profit from the innovations driving automation have special obligations to those left jobless by it, that is strong evidence that they do in fact have such obligations.  相似文献   
200.
Hardcore actualism (HA) grounds all modal truths in the concrete constituents of the actual world (see, e.g., Borghini and Williams (2008), Jacobs (2010), Vetter (2015)). I bolster HA, and elucidate the very nature of possibility (and necessity) according to HA, by considering if it can validate S5 modal logic. Interestingly, different considerations pull in different directions on this issue. To resolve the tension, we are forced to think hard about the nature of the hardcore actualist’s modal reality and how radically this departs from possible worlds orthodoxy. Once we achieve this departure, the prospects of a hardcore actualist validation of S5 look considerably brighter. This paper thus strengthens hardcore actualism by arguing that it can indeed validate S5–arguably the most popular logic of metaphysical modality–and, in the process, it elucidates the very nature of modality according to this revisionary, but very attractive, modal metaphysics.  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