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   6190篇
  免费   266篇
  国内免费   2篇
  2020年   71篇
  2019年   90篇
  2018年   116篇
  2017年   119篇
  2016年   123篇
  2015年   103篇
  2014年   111篇
  2013年   542篇
  2012年   214篇
  2011年   226篇
  2010年   139篇
  2009年   130篇
  2008年   157篇
  2007年   151篇
  2006年   146篇
  2005年   115篇
  2004年   115篇
  2003年   116篇
  2002年   123篇
  2001年   203篇
  2000年   197篇
  1999年   157篇
  1998年   55篇
  1993年   53篇
  1992年   114篇
  1991年   121篇
  1990年   109篇
  1989年   97篇
  1988年   91篇
  1987年   94篇
  1986年   99篇
  1985年   103篇
  1984年   90篇
  1983年   72篇
  1981年   55篇
  1980年   56篇
  1979年   108篇
  1978年   58篇
  1977年   51篇
  1976年   61篇
  1975年   76篇
  1974年   102篇
  1973年   92篇
  1972年   75篇
  1971年   78篇
  1970年   76篇
  1969年   82篇
  1968年   76篇
  1967年   89篇
  1966年   52篇
排序方式: 共有6458条查询结果,搜索用时 15 毫秒
941.
In Phase I, black and white adolescent males made semantic differential ratings of 14 concepts representing a wide range of values. MOTHER, FATHER, GIRLS TV, GOD. POLICE. and NEXT YEAR yielded profiles significantly different for the 2 racial groups. In Phase II, 28 blacks and 28 whites each attempted to decode the profiles of 1 black and 1 white other. For combined racial groups, accuracy was greater when the other was semantically similar. Disregarding semantic similarity, accuracy was greater when the other was of the same race. Semantic similarity made little difference, however, when both encoder and decoder were black. Whites excelled in decoding the profiles of other whites where concepts were commonly encoded by both racial groups, while blacks were more accurate intraracially where concepts were differentially encoded by the 2 racial groups. Results were related to the assumption of a standard set of meanings for whites and a standard-nonstandard dual system for blacks.  相似文献   
942.
Disputing and talking-out behaviors of individual pupils and entire classroom groups in special education classes and regular classes from white middle-class areas and from all black poverty areas ranging from the first grade to junior high school were studied. The classroom teacher in each case acted as the experimenter and as an observer. Various means of recording behaviors were used and reliability of observation was checked by an outside observer, another teacher, a teacher-aide, a student, or by using a tape recorder. Observation sessions varied from 15 min to an entire school day. After baseline rates were obtained, extinction of inappropriate disputing or talking-out behaviors and reinforcement of appropriate behavior with teacher attention, praise and in some cases a desired classroom activity or a surprise at the end of the week brought a decrease in undesired verbalizations. A reversal of contingencies brought a return to high levels of inappropriate talking with a return to low levels when reinforcement for appropriate talking was reinstated. The experiments demonstrated that teachers in a variety of classroom settings could obtain reliable observational records and carry out experimental manipulations successfully using resources available in most schools.  相似文献   
943.
944.
945.
946.
947.
Systematic reinforcement procedures were used to increase study behavior in the classrooms of three beginning teachers experiencing problems of classroom control. Classroom study rates were recorded during a baseline period. During subsequent experimental periods, the teachers changed one or more reinforcement contingencies (teacher attention, length of between-period break, a classroom game) to bring about increased study rates and concomitant reductions in disruptive behaviors. A brief reversal period, in which these contingencies were discontinued, again produced low rates of study. Reinstatement of the contingencies resulted once again in marked increases in study behaviors.  相似文献   
948.
949.
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