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   60645篇
  免费   2403篇
  国内免费   29篇
  63077篇
  2020年   672篇
  2019年   783篇
  2018年   1161篇
  2017年   1160篇
  2016年   1187篇
  2015年   826篇
  2014年   1053篇
  2013年   4625篇
  2012年   1913篇
  2011年   1946篇
  2010年   1172篇
  2009年   1234篇
  2008年   1734篇
  2007年   1763篇
  2006年   1582篇
  2005年   1421篇
  2004年   1317篇
  2003年   1250篇
  2002年   1259篇
  2001年   1966篇
  2000年   1905篇
  1999年   1459篇
  1998年   632篇
  1997年   604篇
  1996年   561篇
  1995年   554篇
  1992年   1218篇
  1991年   1091篇
  1990年   1189篇
  1989年   1013篇
  1988年   1024篇
  1987年   977篇
  1986年   1012篇
  1985年   1004篇
  1984年   870篇
  1983年   796篇
  1982年   578篇
  1979年   918篇
  1978年   681篇
  1977年   573篇
  1975年   760篇
  1974年   864篇
  1973年   912篇
  1972年   696篇
  1971年   651篇
  1970年   598篇
  1969年   657篇
  1968年   800篇
  1967年   711篇
  1966年   673篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
171.
172.
The Family System Functioning (FSF) scale is a new instrument for measuring dimensions of the intrafamilial environment thought to be important in recovery from major psychiatric illness. Modest statistical correlations were obtained when FSF ratings of laboratory-based family interactions were compared with researcher-guided therapist ratings of FSF based upon the family's behavior in family therapy sessions during the subsequent month. The data from these two settings provide support for the validity of some of the scales. Because of the modest size of the correlations, however, behavior in the laboratory setting may not always be an accurate indicator of how the family will behave in the early weeks of family therapy.  相似文献   
173.
174.
175.
Context and structure in conceptual combination   总被引:8,自引:0,他引:8  
  相似文献   
176.
A precursor of language acquisition in young infants   总被引:6,自引:0,他引:6  
  相似文献   
177.
A longitudinal design was employed to test the main and stress-moderating effects of young adolescents' perceived family environment (Family Environment Scales; FES; Moos & Moos, 1981) on their depression, anxiety, and self-esteem. This study was part of a larger longitudinal project (L. Cohen, Burt, & Bjorck, 1987) that demonstrated the significant cross-sectional effects of the young adolescents' controllable and uncontrollable negative events, and the significant longitudinal effects of the former. The present cross-sectional analyses demonstrated the hypothesized main effects of the FES scores; families perceived as cohesive, organized, and expressive were related to positive psychological functioning, whereas families perceived as conflict-ridden and controlling were related to negative functioning. However, in general these effects were nonsignificant in the longitudinal analyses. Although there were a number of significant Negative Events x FES interactions, in no instance did the pattern support the hypothesized stress-buffering role of positive family climate.  相似文献   
178.
179.
Processing resources and age differences in working memory   总被引:1,自引:0,他引:1  
This study investigated the performance of young and old subjects on a modified version of the working memory task developed by Baddeley and Hitch (1974). Subjects were required to verify a set of sentences of varying complexity while they repeated aloud zero, two, or four words. The older subjects took longer to verify the sentences, especially when the sentences were grammatically complex, but the effect of concurrent memory load on verification latency was the same in both groups. These results cast doubt on the notion that there is an age-related decline in one general pool of processing resources. They also suggest that older people have greater difficulty with the active processing aspects, rather than with the passive holding aspects, of working memory tasks.  相似文献   
180.
Contextual stimuli from one category increase the rated similarity of stimuli from a second category. In Experiment 1, associates of one of the members of pairs of target words increased the rated similarity of the members slightly more than did much less similar contextual stimuli. In Experiment 2, contextual category names and good exemplars increased the rated similarity of pairs of poor to medium target exemplars and were also rated as more similar to these targets than the targets were to each other. In both cases, the category names resulted in the stronger effect. This ability of contextually similar stimuli to increase rated similarity opposes the distance-density and averaging-judgmental theories of the effect of context on similarity. However, the theory that a positive association exists between the perceived similarity of stimuli and the strength of the category to which they belong explains how both contextually dissimilar and contextually similar stimuli can increase rated similarity.  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