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   60446篇
  免费   2421篇
  国内免费   18篇
  2019年   752篇
  2018年   1000篇
  2017年   1023篇
  2016年   1099篇
  2015年   799篇
  2014年   938篇
  2013年   4436篇
  2012年   1771篇
  2011年   1936篇
  2010年   1195篇
  2009年   1173篇
  2008年   1704篇
  2007年   1739篇
  2006年   1582篇
  2005年   1398篇
  2004年   1315篇
  2003年   1224篇
  2002年   1343篇
  2001年   1992篇
  2000年   1980篇
  1999年   1488篇
  1998年   724篇
  1997年   632篇
  1996年   618篇
  1995年   563篇
  1993年   569篇
  1992年   1271篇
  1991年   1164篇
  1990年   1141篇
  1989年   1045篇
  1988年   1027篇
  1987年   981篇
  1986年   1058篇
  1985年   1066篇
  1984年   891篇
  1983年   809篇
  1982年   585篇
  1981年   580篇
  1979年   947篇
  1978年   685篇
  1975年   778篇
  1974年   837篇
  1973年   915篇
  1972年   779篇
  1971年   730篇
  1970年   650篇
  1969年   679篇
  1968年   864篇
  1967年   783篇
  1966年   661篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
951.
Elderly subjects were 41% less accurate than young subjects in localizing a point in the frontal plane. The decline could be ascribed neither to an age difference in image formation or skill acquisition nor to a difference in motivational level or trace retention. Evidently the "ambient" or "transient" visual system is compromised at an elementary level. Reasons why this deficit may not be compounded at more complex levels of spatial processing are suggested.  相似文献   
952.
953.
The purpose of this article is to encourage behavior analysts to expand their domain of interest and application to include the "social/political" contingencies that are developed and implemented by policymakers and lawmakers. Using the Vermont juvenile justice system as a prototype, examples are provided that focus on the tertiary, secondary, and primary prevention of delinquent behavior.  相似文献   
954.
The authors demonstrate the complexities and processes involved in constructing a screening test for posttraumatic stress disorder (PTSD). Discussion includes item development, field testing, and preliminary results.  相似文献   
955.
956.
957.
958.
With a sample of 18 capital cases tried in Kentucky, South Carolina, and California, we attempted to replicate an earlier study which showed that significantly more defense challenges for cause were granted under conditions of sequestered, individual voir dire than when voir dire was conducted under less enhanced conditions. In the current sample, sequestered, individual voir dire again resulted in more defense removals for cause than obtained with less extensive voir dire. We present data on the defense removals for cause partitioned into five categories according to the reason for the challenge and analyze the effects of jury selection consultants on the various indices of voir dire as well as final sentence.  相似文献   
959.
To evaluate expectations derived from ego-identity theory and symbolic-interaction theories about the association between self-concept and peer-group affiliations in adolescence, we examined the self-esteem of 221 7th through 12th graders associated by peers with one of five major school crowds and 106 students relatively unknown by classmates and not associated with any school crowd. Among crowd members, self-esteem was directly related to the position of one's crowd in the peer-group status hierarchy (based on both peer-rated and self-perceived crowd affiliation). Outsiders' self-esteem differed in relation to the accuracy of their reflected appraisal of and the salience they attached to crowd affiliation. Crowd members as a whole exhibited higher self-esteem than outsiders as a whole. Differences, however, were mediated by crowd status, salience of crowd affiliation, and the accuracy of reflected appraisals. An adequate interpretation of the findings required an integration of Festinger's (1954, 1957) social comparisons and cognitive-dissonance theories, Cooley's (1902) notions of reflected appraisal, and Newman and Newman's (1976) extrapolations from ego-identity theory.  相似文献   
960.
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