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   70797篇
  免费   2935篇
  国内免费   25篇
  73757篇
  2020年   695篇
  2019年   885篇
  2018年   1201篇
  2017年   1205篇
  2016年   1292篇
  2015年   956篇
  2014年   1130篇
  2013年   5229篇
  2012年   2109篇
  2011年   2233篇
  2010年   1415篇
  2009年   1388篇
  2008年   1999篇
  2007年   2042篇
  2006年   1837篇
  2005年   1659篇
  2004年   1520篇
  2003年   1396篇
  2002年   1532篇
  2001年   2374篇
  2000年   2356篇
  1999年   1775篇
  1998年   822篇
  1997年   725篇
  1996年   738篇
  1993年   651篇
  1992年   1478篇
  1991年   1365篇
  1990年   1365篇
  1989年   1241篇
  1988年   1207篇
  1987年   1148篇
  1986年   1220篇
  1985年   1232篇
  1984年   1042篇
  1983年   946篇
  1982年   675篇
  1981年   655篇
  1979年   1091篇
  1978年   793篇
  1975年   902篇
  1974年   991篇
  1973年   1067篇
  1972年   892篇
  1971年   851篇
  1970年   745篇
  1969年   798篇
  1968年   1004篇
  1967年   919篇
  1966年   773篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
941.
Seventy-five patients admitted to the psychiatric unit of a general hospital were administered a brief neuropsychological screening battery. Discharge diagnoses obtained from the medical records revealed that 20% had brainbased pathology. A discriminant function analysis resulted in a five-variable model (Symbol-Digit Modalities Test, educational level, Psychiatric-Organic subscale of the MMPI, and Shipley Vocabulary and Abstraction scores) which correctly classified 84% of the subjects, with 87% correct identification of the brain-damaged group. A jackknife cross-validation procedure resulted in comparable hit rates.  相似文献   
942.
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   
943.
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   
944.
945.
946.
947.
948.
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   
949.
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   
950.
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