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   83528篇
  免费   3373篇
  国内免费   42篇
  86943篇
  2020年   863篇
  2019年   1069篇
  2018年   1510篇
  2017年   1506篇
  2016年   1628篇
  2015年   1141篇
  2014年   1363篇
  2013年   6674篇
  2012年   2523篇
  2011年   2636篇
  2010年   1610篇
  2009年   1587篇
  2008年   2406篇
  2007年   2381篇
  2006年   2072篇
  2005年   1927篇
  2004年   1859篇
  2003年   1692篇
  2002年   1751篇
  2001年   2680篇
  2000年   2527篇
  1999年   1940篇
  1998年   982篇
  1997年   859篇
  1996年   798篇
  1993年   779篇
  1992年   1688篇
  1991年   1563篇
  1990年   1580篇
  1989年   1390篇
  1988年   1356篇
  1987年   1330篇
  1986年   1374篇
  1985年   1474篇
  1984年   1153篇
  1983年   1034篇
  1979年   1199篇
  1978年   850篇
  1977年   772篇
  1976年   804篇
  1975年   1074篇
  1974年   1157篇
  1973年   1196篇
  1972年   1064篇
  1971年   966篇
  1970年   921篇
  1969年   901篇
  1968年   1173篇
  1967年   1093篇
  1966年   977篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
921.
The synthesis of two separate lines of inquiry--research on information integration and longitudinal studies of attitudes--prompted the hypothesis that the degree of consistency between attitudes and behavior will increase as a function of the amount of information available about the attitude object. The hypothesis was tested in three separate longitudinal studies, ranging in length from 4 days to 4 months, that investigated the following behaviors: voting for candidates for political office, voting for two social policy election initiatives, and having an influenza vaccination. In support of the hypothesis, in each study, amount of information moderated the consistency between attitudes and behavior; and the significance of this relation remained even after controlling for the effects of a number of other potential moderators, including prior direct behavioral experience with the attitude object and attitude certainty. Consistent with previous research, direct behavioral experience was also a determinant of attitude-behavior consistency, and for the behavior of having an influenza vaccination, this relation was independent of the effect of amount of information. The discussion focuses on the interrelation among moderators of attitude-behavior consistency and on the theoretical implications of the findings.  相似文献   
922.
923.
924.
925.
926.
927.
Fear of death and the concept of extended self   总被引:1,自引:0,他引:1  
  相似文献   
928.
In Experiment 1 six monkeys were tested with discriminative relations that were backward relative to their training in a 0-second conditional (“symbolic”) matching procedure. Although there was some indication of backward associations, the evidence was generally weak, and statistical evaluations did not reach conventional significance levels. Unlike children, who show backward associations to the point of symmetry, monkeys and pigeons display at best only weak and transient backward associations. In Experiment 2 associative transitivity was assessed across two sets of conditional matching tasks. All four monkeys tested demonstrated strong transitivity. In contrast, in Experiment 3 there was no evidence of transitivity in three pigeons tested under conditions closely comparable to those of Experiment 2. These results may identify some key features of interspecies differences and contribute to analyses of serial learning in animals.  相似文献   
929.
24 women over 60 yr. and 24 younger women rated the severity of life stress events drawn from a pool of events occurring to elderly people. There were no over-all age differences, but rather strong agreement on which events were most threatening. There was some evidence, however, that the old rated 'severe' death events as less threatening than younger women.  相似文献   
930.
Flicker fusion frequencies of 48 healthy controls and of 35 alcoholics were measured to detect possible associations between flicker fusion and signs of nonspecific brain damage, the aim of the study. FFF was statistically significantly lower in patients addicted to alcohol than in healthy subjects. Lower flicker fusion frequencies were associated with the severeness of organic psychosis as rated psychopathologically. The hypothesis that addiction to alcohol is a sign of diffuse, nonspecific, organic brain damage was discussed.  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