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   50690篇
  免费   2019篇
  国内免费   31篇
  2020年   532篇
  2019年   629篇
  2018年   944篇
  2017年   926篇
  2016年   937篇
  2015年   642篇
  2014年   815篇
  2013年   3833篇
  2012年   1427篇
  2011年   1581篇
  2010年   968篇
  2009年   1032篇
  2008年   1388篇
  2007年   1344篇
  2006年   1259篇
  2005年   1084篇
  2004年   1013篇
  2003年   1043篇
  2002年   953篇
  2001年   1826篇
  2000年   1783篇
  1999年   1323篇
  1998年   577篇
  1997年   496篇
  1996年   468篇
  1992年   1115篇
  1991年   1050篇
  1990年   1054篇
  1989年   955篇
  1988年   898篇
  1987年   892篇
  1986年   872篇
  1985年   982篇
  1984年   774篇
  1983年   622篇
  1982年   490篇
  1979年   750篇
  1978年   574篇
  1977年   504篇
  1976年   478篇
  1975年   676篇
  1974年   718篇
  1973年   786篇
  1972年   631篇
  1971年   525篇
  1970年   484篇
  1969年   527篇
  1968年   639篇
  1967年   561篇
  1966年   618篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
The belief that individual marital therapy (IMT) is an ineffective form of treatment for marriage problems and markedly inferior to the conjoint approaches has become almost an article of faith in family therapy circles. This position was originally advanced in the influential reviews of the research literature conducted by Gurman and Kniskern, and their conclusions have been cited in numerous other articles. This paper re-reviews the research studies purportedly supporting this conclusion and finds almost all of them to be invalidated by gross flaws in design and implementation. It is argued that from the highly inadequate evidence available, no conclusions can be reached concerning either the absolute or relative effectiveness of IMT.  相似文献   
972.
973.
974.
975.
Stress-processes and depressive symptomatology   总被引:5,自引:0,他引:5  
  相似文献   
976.
977.
Interventions were employed to program maintenance following correspondence training. The use of reinforcement of verbalization and a mixed sequence of procedures designed to establish indiscriminable contingencies was evaluated in multiple-baseline designs across subjects and behaviors. The results indicated that target behaviors were maintained under less intrusive interventions and in the absence of programmed contingencies during extended follow-up conditions. The results are discussed in terms of changes in reinforcement schedules established in maintenance interventions.  相似文献   
978.
979.
Two studies were conducted to investigate the effects of perceived control in two men's prisons, one housing 181 inmates and the other housing 623 inmates. In both prisons, inmates' perceived control over the environment was found to be significantly related to their ratings of their living accommodations, experienced stress, and physical symptoms, even when type of cell was held constant.  相似文献   
980.
Superimposition of response-independent reinforcement   总被引:6,自引:6,他引:0       下载免费PDF全文
Studies that have superimposed response-independent reinforcement (or reinforcers scheduled by contingencies placed on the absence of responding) upon conventional response-dependent schedules are reviewed. In general, providing alternative sources of reinforcement reduced response rates below the levels observed when alternative reinforcement was absent. However, response-rate elevation was sometimes found, particularly when rates of superimposed response-independent reinforcement were low. Superimposition of schedules providing reinforcers contingent on the absence of responding usually produced more severe response-rate decrements than superimposition of response-independent reinforcement. A variant of Herrnstein's equation, which assumes that some of the alternative reinforcers function as if they were delivered by baseline response-dependent source of reinforcement, is in qualitative agreement with the overall body of results obtained, and can predict both increases and decreases in response rate as resulting from superimposed reinforcers.  相似文献   
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