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   2256篇
  免费   113篇
  2369篇
  2023年   14篇
  2022年   15篇
  2021年   26篇
  2020年   44篇
  2019年   57篇
  2018年   79篇
  2017年   83篇
  2016年   87篇
  2015年   47篇
  2014年   66篇
  2013年   280篇
  2012年   115篇
  2011年   128篇
  2010年   60篇
  2009年   75篇
  2008年   95篇
  2007年   74篇
  2006年   90篇
  2005年   73篇
  2004年   108篇
  2003年   62篇
  2002年   74篇
  2001年   45篇
  2000年   42篇
  1999年   58篇
  1998年   43篇
  1997年   32篇
  1996年   20篇
  1995年   30篇
  1994年   21篇
  1993年   24篇
  1992年   20篇
  1991年   22篇
  1990年   19篇
  1989年   12篇
  1988年   12篇
  1987年   8篇
  1986年   13篇
  1985年   12篇
  1984年   14篇
  1982年   9篇
  1980年   13篇
  1978年   10篇
  1975年   11篇
  1974年   16篇
  1973年   10篇
  1972年   9篇
  1970年   10篇
  1968年   11篇
  1966年   8篇
排序方式: 共有2369条查询结果,搜索用时 0 毫秒
41.
42.
43.
Stewart and Nejedlo discuss the use of the Career Development Pyramid as a model for career development and as a practical aid in career counseling. The model graphically depicts the synergistic relations of career choice factors, life-style, self-concept, and the specific job. The authors discuss the relationship between the quadrihedral model and current career development theories. They suggest applied uses of the pyramid and provide a working plan for copy and use by career development counselors.  相似文献   
44.
Our study focused on the etiology of specific behavioral problems rather than on a global syndrome such as hyperactivity. As a first step in studying specific behavioral problems, we revised the Conners (1970) Parent Symptom Rating questionnaire to improve its factor structure. Our revised instrument and the testretest reliabilities of its 12 scales are described. A classical twin analysis comparing intraclass correlations for 54 pairs of identical twins and 33 pairs of same-sex fraternal twins indicated substantial genetic influence on behavioral problems in schoolaged children. We wish to express our gratitude for the Spencer Foundation's support of this research.  相似文献   
45.
Line drawings used by Weisstein and Harris (1974) are seen as box-like three-dimensional figures if the lines are arranged properly. A flat two-dimensional pattern is seen when these same lines are disarranged. A target line contained within the three-dimensional figure is identified more readily than is the same line contained within a two-dimensional figure. This finding was extended in the present experiments: The three-dimensional stimulus was detected more quickly than the two-dimensional stimulus, under conditions of visual backward masking. Three-dimensional stimuli were also classified more quickly than two-dimensional stimuli. Just as with the face-detection effect and the word-detection effect, object detection can be affected by the form of the visual stimulus.  相似文献   
46.
47.
To date, all empirical studies of Reality Orientation have been carried out as part of a ward or group programme in which, in addition to the orientation procedure, patients have been exposed to a variety of other physical and social activities. It is argued that the efficacy of providing information about time, place and person alone, and its generalization to other forms of behaviour, remain unknown. Results of three single case studies suggest that providing such information can increase orientation and that generalization to other forms of behaviour does occur.  相似文献   
48.
Approximately 50% of all institutionalized, mentally retarded adults receive psychotropic medication to control inappropriate behavior. In this study, behaviors exhibited by five retarded adults were formally observed while they were on and off medication. Each subject had been receiving chlorpromazine for six or more years prior to the start of the study. The drug was withdrawn and readministered using a double-blind B-A-B (drug-placebo-drug) design. Effects were highly individualized. Some desirable behavior emerged when chlorpromazine was discontinued.  相似文献   
49.
A new methodology extends the study of serial pattern learning to nonhuman organisms by constructing patterns using elements that are both familiar and motivationally meaningful to animals. Two experiments examine the ability of rats to anticipate various quantities of food as measured by running times in a runway when the quantities occur in a serial order. In Experiment 1, a serial monotonic pattern (14-7-3-1-0 food pellets) produced more rapid learning and more accurate anticipation of the various quantities (“tracking”) than a serial nonmonotonic pattern (14-1-3-7-0 food pellets), particularly with respect to the final 0-pellet element. In Experiment 2, the same monotonic pattern generated faster learning and more accurate anticipation of pattern elements than a weakly monotonic pattern (14-5-5-1-0 pellets). Associative explanations including simple excitatory or inhibitory effects, temporal anticipation, reinforcement contrast, and the number and discriminability of pairwise associations are not adequate to account for the data. Rather, the formally defined structural complexity of each pattern adequately predicts its relative difficulty.  相似文献   
50.
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