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   947篇
  免费   38篇
  2023年   7篇
  2022年   8篇
  2021年   11篇
  2020年   9篇
  2019年   18篇
  2018年   26篇
  2017年   34篇
  2016年   35篇
  2015年   22篇
  2014年   37篇
  2013年   97篇
  2012年   62篇
  2011年   49篇
  2010年   27篇
  2009年   41篇
  2008年   53篇
  2007年   49篇
  2006年   33篇
  2005年   33篇
  2004年   34篇
  2003年   31篇
  2002年   30篇
  2001年   15篇
  2000年   17篇
  1999年   12篇
  1998年   21篇
  1997年   16篇
  1996年   9篇
  1995年   12篇
  1994年   7篇
  1993年   5篇
  1992年   7篇
  1991年   6篇
  1990年   9篇
  1989年   9篇
  1988年   10篇
  1987年   5篇
  1986年   4篇
  1985年   8篇
  1984年   9篇
  1983年   9篇
  1982年   4篇
  1981年   7篇
  1980年   4篇
  1979年   3篇
  1978年   5篇
  1977年   8篇
  1976年   3篇
  1975年   3篇
  1967年   2篇
排序方式: 共有985条查询结果,搜索用时 15 毫秒
931.
Consumer ethnocentrism presents barriers for internationalising organisations. In China, evidence of a resurgent nationalism partly fuelled by rapid economic growth portends a shift in consumption away from foreign towards domestic products. On the other hand, rising consumer demand for branded and luxury products cannot be fully met domestically. However, much of the available evidence on Chinese consumer ethnocentrism is anecdotal and is based on attitudinal surveys that, as accurate measures of actual purchasing behaviour, suffer from certain methodological issues. In response, we report an experiment that measures the ethnocentrism of 447 Chinese consumers as their incentive‐compatible choices between foreign and domestic products in a field setting. Our findings show little effect of foreign origin on subjects' choices that were only weakly related with attitudinal measures including the commonly used consumer ethnocentric tendencies scale (CETSCALE). Our results question the existence of ethnocentric consumer behaviour in China and the use of CETSCALE to gauge it generally. Copyright © 2012 John Wiley & Sons, Ltd.  相似文献   
932.
Three experiments used appetitive conditioning with rats to examine the involvement of elemental and configural processes in positive and negative patterning discriminations. The first experiment demonstrated that negative and, to some extent, positive patterning discriminations were learned more rapidly when these discriminations consisted of stimulus elements that had previously been the reinforced as opposed to the non-reinforced elements of a simple discrimination. Experiment 2 revealed an excitatory summation effect during the early phase of negative patterning learning that depended upon discrimination pretraining. The final experiment demonstrated faster discrimination learning between the compound and the less salient, rather than the more salient, element of an instrumental patterning task. The present set of results were interpreted as reflecting the possibility, consistent with connectionist theory, that internal representations of the conditioned stimuli change over the course of a patterning discrimination.  相似文献   
933.
934.
935.
936.
This article examines the psychological impact of participating in sigmoidoscopy screening for colorectal cancer prevention. The 1st study examined psychological well-being at 3 months, in relation to screening outcome, in 4,153 individuals. The 2nd study used longitudinal data to examine changes in psychological functioning from before to after screening in relation both to screening outcome and baseline indicators of vulnerability. There were few psychological differences between those who had received negative results or had polyps detected. These findings were confirmed in the longitudinal study, which also found no evidence for vulnerability to adverse effects among those who were initially most anxious or who perceived their risk of cancer to be higher. The longitudinal data suggested that screening might produce transient positive effects.  相似文献   
937.
938.
The ability to answer questions about a text is the strongest possible demonstration of text comprehension. The question-answering problems that arise in a story-understanding system are discussed. Some solutions are described and illustrated by a computer program, which reads stories, and answers questions.  相似文献   
939.
940.
The present study employed a behavioural detection approach to investigate the combined effects of sample duration and sample presentation frequency on delayed matching accuracy of pigeons. Experiment 1 showed that when both samples were exposed at each of the two possible durations within a two-alternative, delayed matching session, discriminability was higher to the longer duration sample than to the short-duration sample, as found when sample duration is varied between sessions. Experiment 2's asymmetrical procedure increased bias toward the more frequent of the two samples but had no influence on discriminability. Initial discriminability was higher to samples exposed for longer durations, irrespective of stimulus presentation frequency. The results suggest qualitatively different effects of the two sources of stimulus control under consideration: Sample duration (a local or within-trial manipulation) exerted its effect on discrimination of the stimuli, whereas sample presentation frequence (a global factor) exerted its major effect on response bias. An interpretation of the data in terms of Blough's (1996) analysis of errors in matching tasks suggests that the amount of behaviour under control of the sample stimulus markedly changed with different sample durations. The analysis also showed that the biasing manipulation exerted most of its effect on the portion of behaviour outside of control by the critical stimulus. We argue that theoretical accounts of delayed matching performance need to consider both local and global factors as determinants of matching accuracy.  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