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   86255篇
  免费   3517篇
  国内免费   37篇
  89809篇
  2020年   1032篇
  2019年   1225篇
  2018年   1696篇
  2017年   1814篇
  2016年   1845篇
  2015年   1322篇
  2014年   1593篇
  2013年   7285篇
  2012年   2922篇
  2011年   2912篇
  2010年   1801篇
  2009年   1824篇
  2008年   2561篇
  2007年   2577篇
  2006年   2303篇
  2005年   1986篇
  2004年   1977篇
  2003年   1868篇
  2002年   1833篇
  2001年   2763篇
  2000年   2594篇
  1999年   1986篇
  1998年   948篇
  1997年   852篇
  1996年   899篇
  1995年   841篇
  1994年   810篇
  1993年   821篇
  1992年   1654篇
  1991年   1509篇
  1990年   1551篇
  1989年   1422篇
  1988年   1433篇
  1987年   1327篇
  1986年   1328篇
  1985年   1328篇
  1984年   1144篇
  1983年   1026篇
  1979年   1224篇
  1978年   885篇
  1975年   985篇
  1974年   1100篇
  1973年   1149篇
  1972年   938篇
  1971年   889篇
  1970年   784篇
  1969年   808篇
  1968年   1019篇
  1967年   910篇
  1966年   801篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
981.
Scores on the Beck Depression Inventory (BDI) were periodically obtained from the roommates of college students who exhibited a persistent mild depression over a 3-month period. For comparative purposes, BDI scores were also obtained from roommates of individuals who were transiently depressed and from subjects with nondepressed roommates. In comparison with control subjects, the roommates of persistently depressed persons displayed a progressive increase in BDI score over the course of the study.  相似文献   
982.
983.
984.
985.
The author presents the case of a patient who showed the massive defensive effects seen in people who were abused in childhood. These effects are similar to those described in George Orwell's 1984 and in his autobiographical writings: denial and "doublethink"; masochistic submission to the tormentor; turning of anger against the self and loving "Big Brother"; identifying with the abuser and tormenting others; a burgeoning of anal mechanisms and obsessive phenomena that results in a massive isolation of affects; excessive emotional control alongside outbursts of rage. The interference with memory and emotions compromises identity and humanity. The unforseeable evolution of innate gifts in a child sometimes permits a partial transcendence of these crippling defenses, as Orwell partially transcended what appears to have been the emotional deprivation of his childhood and what he felt to have been the abuse of his schoolboy years.  相似文献   
986.
Additional results from Rutte and Wilke's (1984) study are presented. In the context of a social dilemma situation two variables were manipulated: use and variance. Preference for various decision structures is the issue of the present paper. It appeared that a large majority structure and an unanimity structure were mast preferred. A small majority structure and a structure in which each decides for him/herself were intermediately preferred. Whereas a structure in which one person, a leader, decides for all was least preferred. Further analysis of these data suggested that only the latter two decision structures were influenced by the use and variance manipulations.  相似文献   
987.
This paper reports an experiment testing two hypotheses. The first is that the value or utility associated with a payment to one's self and a payment to a co-worker can be represented as an additive function of a utility for own payment (nonsocial utility) and a utility for the difference between own and other's payment (social utility). The second hypothesis is that changes in the amount of work accomplished by one's self and/or the other should influence the social, but not the the nonsocial utilities. Support for both hypotheses is reported.  相似文献   
988.
In an attempt to investigate the range effect obtained by Moyer and Bayer (1976), two groups of subjects were taught to associate colors with circles that differed in size by larger or smaller intervals and then participated in a symbolic comparison task, in which they determined which of two simultaneously presented symbols (the first letters of two colors) represented the larger magnitude. A third group of subjects, who merely learned an arbitrary ordering of the colors along the dimension of size, also participated in the symbolic comparison task. Despite the fact that no practice trials were given, there was no effect of interval size in either early or late blocks, and the circle-learning groups did not differ in performance from the group who only learned an arbitrary ordering of colors, even when pairs containing end terms were removed from the analysis. It is concluded that subjects do not use analogue codes in symbolic comparison tasks involving small, repeated sets of arbitrarily defined symbols.  相似文献   
989.
Reading with partial phonology: Developmental phonological dyslexia   总被引:1,自引:0,他引:1  
Recent psycholinguistic investigations have advanced our understanding of the acquired dyslexias. Developmental analogues have been described to some of these disorders. A new case of developmental phonological dyslexia is described here. A.H. is an intelligent 10-year-old boy with no neurological abnormality. Reading and spelling are below age level. A.H. is poorer at reading words than nonwords. The majority of his errors are paralexias: visual, derivations, or visuosemantic. Spelling-to-sound regularity does not affect the ability to read aloud. A.H.'s reading performance is significantly impaired when words are presented typed in reverse order, thereby prohibiting global strategies. Spelling of nonwords is no better than reading of nonwords. Only one-fifth of spelling errors are phonologically valid. A.H. has imperfect development of both the phonological route to reading and the phonological route to spelling.A shortened version of this paper was presented at the European meeting of the International Neuropsychological Society, Lisbon, Portugal, June 1983.  相似文献   
990.
Analyses of averaged auditory evoked responses to a list of 10 positive and 10 negative words led to the identification of a restricted region in the brain response which reliably discriminated between words differing in the semantic features positive and negative. These data support the view that word meanings are composed of more basic components or features and are not stored simply as dictionary items in the brain.  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