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   56950篇
  免费   2284篇
  国内免费   32篇
  59266篇
  2020年   635篇
  2019年   802篇
  2018年   1144篇
  2017年   1145篇
  2016年   1203篇
  2015年   821篇
  2014年   1001篇
  2013年   4947篇
  2012年   1810篇
  2011年   1978篇
  2010年   1160篇
  2009年   1171篇
  2008年   1744篇
  2007年   1733篇
  2006年   1522篇
  2005年   1373篇
  2004年   1354篇
  2003年   1227篇
  2002年   1280篇
  2001年   1890篇
  2000年   1800篇
  1999年   1375篇
  1998年   710篇
  1997年   605篇
  1996年   554篇
  1995年   542篇
  1994年   523篇
  1993年   557篇
  1992年   1098篇
  1991年   1043篇
  1990年   1022篇
  1989年   925篇
  1988年   882篇
  1987年   868篇
  1986年   876篇
  1985年   933篇
  1984年   747篇
  1983年   634篇
  1982年   504篇
  1979年   739篇
  1978年   529篇
  1975年   646篇
  1974年   706篇
  1973年   669篇
  1972年   602篇
  1971年   534篇
  1969年   504篇
  1968年   606篇
  1967年   617篇
  1966年   520篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
12.
Cognitive neuropsychology provides a theoretical framework and methods that can be of value in the study of developmental disorders, but the "dissociation" logic at the centre of this approach is not well suited to the developmental context. This is illustrated with examples from specific language impairment. Within the developing language system there is ample evidence for interaction between levels of representation, with modularity emerging in the course of development. This means that one typically is seeking to explain a complex pattern of associated impairments, rather than highly selective deficits. For instance, a selective impairment in auditory processing can have repercussions through the language system and may lead to distinctive syntactic deficits that are seen in written as well as spoken language. Changes in the nature of representations and in the relationships between components of a developing system mean that cross-sectional data at a single point in development may be misleading indicators of the primary deficit. Furthermore, traditional cognitive neuropsychology places a disproportionate emphasis on representational (competence) deficits, with processing (performance) deficits being relatively neglected. Methods for distinguishing these two kinds of impairment are discussed, as well as other approaches for elucidating the underlying nature of developmental disorders.  相似文献   
13.
14.
OBJECTIVE: To test a theoretical model of how ethnic pride and self-control are related to risk and protective factors. DESIGN: A community sample of 670 African American youth (mean age = 11.2 years) were interviewed in households. MAIN OUTCOME MEASURES: Measures of cigarette smoking, alcohol use, and sexual behavior (lifetime to past month). RESULTS: Structural modeling analyses indicated parenting was related to self-control and self-esteem, and racial socialization was related to ethnic pride. Self-control and self-esteem variables were related to levels of deviance-prone attitudes and to perceptions of engagers in, or abstainers from, substance use and sexual behavior. The proximal factors (behavioral willingness, resistance efficacy, and peer behavior) had substantial relations to the criterion variables. Participant gender and parental education also had several paths in the model. Results were generally similar for the 2 outcome behaviors. CONCLUSIONS: In this population, self-esteem and self-control are related to parenting approaches and have pathways to attitudes and social perceptions that are significant factors for predisposing to, or protecting against, early involvement in substance use and sexual behavior.  相似文献   
15.
16.
17.
The essay examines intellectual virtue in the Summa theologiae, taking it as an interpretative key to the epistemology of the Summa theologiae as a whole. Because Aquinas blurs the line between the acquired and the theological virtues, and between virtues and the gifts of the Spirit, it becomes impossible to maintain the distinction between the realms of nature and grace, or between natural reason and revealed truth: grace permeates the most ordinary activities of human reasoning. This reading of the Summa theologiae raises questions about many contemporary debates, particularly those concerning natural law.  相似文献   
18.
19.
20.
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