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   39073篇
  免费   1580篇
  国内免费   14篇
  2020年   359篇
  2019年   421篇
  2018年   575篇
  2017年   587篇
  2016年   653篇
  2015年   490篇
  2014年   555篇
  2013年   2629篇
  2012年   1104篇
  2011年   1070篇
  2010年   676篇
  2009年   636篇
  2008年   963篇
  2007年   950篇
  2006年   819篇
  2005年   802篇
  2004年   758篇
  2003年   686篇
  2002年   707篇
  2001年   1273篇
  2000年   1228篇
  1999年   890篇
  1998年   402篇
  1997年   349篇
  1992年   869篇
  1991年   811篇
  1990年   825篇
  1989年   718篇
  1988年   713篇
  1987年   685篇
  1986年   717篇
  1985年   792篇
  1984年   593篇
  1983年   547篇
  1982年   369篇
  1981年   356篇
  1979年   690篇
  1978年   426篇
  1977年   416篇
  1976年   411篇
  1975年   584篇
  1974年   670篇
  1973年   713篇
  1972年   617篇
  1971年   578篇
  1970年   573篇
  1969年   561篇
  1968年   750篇
  1967年   663篇
  1966年   592篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
993.
A work experience project for low income adults is described. “Counselors” in this project were found to have little experience; little training in interviewing, statistics, psychological analysis, or other guidance and counseling techniques; and inadequate supervision. Results on aptitude tests were reported on the average 26 days after test administration. Occupational information was sadly lacking. The question is raised: When is a counselor… ?  相似文献   
994.
The demand made by black students that administrators employ more black counselors reveals not only students' needs to proclaim black identity and pride but also their grievances against guidance that have deeper roots than just the current social revolution. This article examines the black student's view of guidance in order that counselors might develop a role for the profession that will serve this student more effectively.  相似文献   
995.
996.
997.
A procedure was developed for use in a public school classroom where only one of the children needed treatment, sophisticated apparatus was not feasible, personnel were untrained in conditioning techniques, and where disruption had to be minimized. Candy reinforcers were contingent upon working behavior. The total candy earned in the session was divided equally among the class. Portable radio control apparatus was adopted to give feedback to the child when he was displaying the desired working behavior. An increase in working behavior and a decrease in talking aloud and out-of-seat behavior was observed for each of the four subjects. When the feedback apparatus was removed, the desired behavior was maintained through candy reinforcement alone in all four subjects.  相似文献   
998.
999.
The effect of reinforcement dependent on the social responses of two severely retarded withdrawn children was investigated. During 30 training sessions (30 min each) food and praise were administered dependent upon the children's mutual participation in a ball-rolling and block-passing task. Both children showed a progressive increase in social interaction in a non-training situation during this reinforcement period. After the reinforcement procedures were removed, social behavior decreased markedly. Response generalization to children not involved in training occurred.  相似文献   
1000.
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