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   76331篇
  免费   3079篇
  国内免费   27篇
  79437篇
  2020年   712篇
  2019年   938篇
  2018年   1282篇
  2017年   1341篇
  2016年   1431篇
  2015年   1037篇
  2014年   1211篇
  2013年   5801篇
  2012年   2231篇
  2011年   2400篇
  2010年   1493篇
  2009年   1471篇
  2008年   2077篇
  2007年   2153篇
  2006年   1922篇
  2005年   1723篇
  2004年   1611篇
  2003年   1519篇
  2002年   1642篇
  2001年   2463篇
  2000年   2411篇
  1999年   1849篇
  1998年   862篇
  1997年   767篇
  1996年   792篇
  1995年   695篇
  1992年   1568篇
  1991年   1465篇
  1990年   1441篇
  1989年   1319篇
  1988年   1310篇
  1987年   1241篇
  1986年   1313篇
  1985年   1343篇
  1984年   1111篇
  1983年   1006篇
  1982年   723篇
  1981年   728篇
  1979年   1197篇
  1978年   868篇
  1975年   974篇
  1974年   1095篇
  1973年   1205篇
  1972年   993篇
  1971年   947篇
  1970年   875篇
  1969年   862篇
  1968年   1114篇
  1967年   1015篇
  1966年   867篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
In the first ( N = 140) of two quasi-experimental field studies, trial group employees were changed from a 5/40 to a 4/40 work schedule for four months then returned to a 5/40 schedule. In a second study ( N = 102), trial group employees were changed from 5/40 to flextime. Reactions were evaluated using a model for understanding the impact of work schedules. The effects of schedule changes matched those anticipated by pre-intervention surveys of employees. Factors related to organizational effectiveness were enhanced where specific organizational needs were met. Interference with personal activities was reduced where employees had experienced specific difficulties. The most powerful effect, however, was on worker attitudes toward specific work schedules. In addition, a mild positive (perhaps Hawthorne) effect was evident for a wide range of general worker reactions.  相似文献   
962.
Analysis of elbow-extension movements, executed at maximal velocity, show positive correlations of timing of agonist-antagonist EMG activity with both movement velocity and displacement. Results indirectly support the notion that the antagonist musculature provides a braking force to arrest rapid limb movements.  相似文献   
963.
964.
The Psychological Record - By avoiding the confound between the physical and semantic properties of words, it was possible to demonstrate the effects and aftereffects of semantic satiation....  相似文献   
965.
Book Reviews     
The Psychological Record -  相似文献   
966.
An examination of the social perception literature yields little evidence for the false-uniqueness phenomenon (Valins & Nisbett, 1972), the perception that one's attributes are more unique than is the case. In contrast, the tendency for individuals to project their own characteristics onto other people and assume that more people are like themselves is a robust phenomenon. One reason researchers may not have found false uniqueness is that they have not looked at the accuracy of consensus estimates. A close look at the results of Tabachnik, Crocker, and Alloy (1983) and Sanders and Mullen (1983), who did assess accuracy, suggests that people possessing undesirable attributes over-estimate consensus, whereas people holding desirable attributes underestimate consensus. The latter pattern is a form of false uniqueness. In this study we looked at the accuracy of social consensus estimates in the context of psychological fears. A sample of subjects filled out an abbreviated version of a fear survey and made estimates of consensus. The results showed that both high- and low-fear respondents overestimated the incidence of high fear among their peers, but high-fear subjects were more inaccurate in their estimates. A false-uniqueness effect was found on the part of low-fear subjects, as they tended to underestimate the incidence of low fear among their peers. These findings are consistent with a motivational interpretation that emphasizes the individual's need to justify or normalize stigmatized behavior and to bolster perceived self-competence.  相似文献   
967.
In this study we combined daily diary data with interview data to investigate individual differences in the impact of stressful daily events on mood. Using a sample of 96 women in an urban community, we examined perceived neighborhood quality and major life events as possibly potentiating the effects of stressful daily events, and we viewed social supports as potentially buffering this daily process. Results confirmed that the presence of chronic ecologic stress (neighborhood perceptions) exacerbated the immediate effects of stressful daily events on mood and also increased the likelihood of enduring effects of daily stressors on next day's mood. Contrary to expectations, previous exposure to major life events decreased the impact of stressful daily events. The availability of social supports, although not buffering the impact of stressful daily events on mood, did mitigate the enduring effects of these events on next day's mood. This study also presents a method for analyzing daily time-series data, while correcting for potential problems of autocorrelated error terms. As such, this study represents a significant advance over previous analytic approaches to time-series data in the study of the stress process.  相似文献   
968.
969.
970.
A model for stimulus generalization in Pavlovian conditioning   总被引:2,自引:0,他引:2  
  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