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   2487篇
  免费   147篇
  国内免费   4篇
  2023年   19篇
  2021年   22篇
  2020年   44篇
  2019年   57篇
  2018年   81篇
  2017年   61篇
  2016年   72篇
  2015年   46篇
  2014年   60篇
  2013年   285篇
  2012年   100篇
  2011年   105篇
  2010年   73篇
  2009年   49篇
  2008年   122篇
  2007年   114篇
  2006年   95篇
  2005年   72篇
  2004年   68篇
  2003年   72篇
  2002年   64篇
  2001年   64篇
  2000年   58篇
  1999年   53篇
  1998年   35篇
  1997年   22篇
  1996年   33篇
  1995年   32篇
  1994年   21篇
  1993年   21篇
  1992年   37篇
  1991年   24篇
  1990年   24篇
  1989年   22篇
  1988年   27篇
  1987年   29篇
  1986年   27篇
  1985年   29篇
  1984年   24篇
  1983年   19篇
  1982年   23篇
  1981年   21篇
  1980年   20篇
  1979年   18篇
  1978年   30篇
  1977年   25篇
  1976年   19篇
  1975年   24篇
  1974年   18篇
  1968年   23篇
排序方式: 共有2638条查询结果,搜索用时 15 毫秒
101.
One criticism of Horner's fear-of-success (FOS) research concerns the fact that she defined success (being number 1 in a medical school class) for her subjects. Two aims of the present investigation were to (a) reinstate the traditional ambiguity of the projective verbal lead: “Anne (John) has succeeded,” and (b) determine the amount of FOS imagery projected by 64 male and 79 female college students to these leads. The low incidence of FOS in this present study was attributed to the opportunity subjects were given to define success for themselves. There were no significant differences in the amount of FOS projected by men and women. School-related success was the most often cited success theme. Results were supportive of the hypothesis that FOS is situationally determined.  相似文献   
102.
The effects of multiple role juggling (i.e., simultaneously attending to demands of different roles) on daily mood states of employed mothers were examined. Ss completed activity and mood questionnaires 8 times a day for 8 days. Multiple role juggling had immediate negative effects on task enjoyment and mood. However, contrast effects and habituation to role juggling occurred when mood and satisfaction were examined over time. Furthermore, mood states tended to spill over from one episode to the next within a day, but contrast effects were found across days. These results reflect the complex nature of psychological adjustment to multiple role occupancy.  相似文献   
103.
Rats were trained on a discrete-trial probability learning task. In Experiment 1, the molar reinforcement probabilities for the two response alternatives were equal, and the local contingencies of reinforcement differentially reinforced a win-stay, lose-shift response pattern. The win-stay portion was learned substantially more easily and appeared from the outset of training, suggesting that its occurrence did not depend upon discrimination of the local contingencies but rather only upon simple strengthening effects of individual reinforcements. Control by both types of local contingencies decreased with increases in the intertrial interval, although some control remained with intertrial intervals as long as 30 s. In Experiment 2, the local contingencies always favored win-shift and lose-shift response patterns but were asymmetrical for the two responses, causing the molar reinforcement rates for the two responses to differ. Some learning of the alternation pattern occurred with short intertrial intervals, although win-stay behavior occurred for some subjects. The local reinforcement contingencies were discriminated poorly with longer intertrial intervals. In the absence of control by the local contingencies, choice proportion was determined by the molar contingencies, as indicated by high exponent values for the generalized matching law with long intertrial intervals, and lower values with short intertrial intervals. The results show that when molar contingencies of reinforcement and local contingencies are in opposition, both may have independent roles. Control by molar contingencies cannot generally be explained by local contingencies.  相似文献   
104.
Considers a preventive intervention effort designed to modify the characteristics and regularities of the school environment so as to enhance the expectations conveyed to high risk students. Employing this case effort (Weinstein et al., 1991) as a base, several issues are highlighted that deserve greater attention in the design, implementation, assessment, and reporting of other preventively-focused social interventions. These issues include: (1) the degree of program implementation fidelity, (2) the impact a lack of attainment of program fidelity may have on arriving at erroneous evaluation conclusions about social programs, (3) the ways in which the theory and basic research employed in the program rationale is appropriate to and reflected in the program as designed, (4) issues of program potency and dosage, (5) the ways in which quantitative and qualitative evaluation data can enhance each other, and (6) the import of evaluability assessments of programs prior to moving to outcome evaluations. In addressing these issues, the importance of developmentally- and ecologically-informed program formulations is underscored. Finally, the critical role that program reports such as the Weinstein paper, with its careful discussion of both the process of implementation and outcome assessments, can play in the development of more effective prevention program implementation efforts is highlighted.  相似文献   
105.
106.
Experimentally induced failure sometimes produces helplessness and sometimes facilitation on subsequent tasks. A model which accounts for this in terms of variations in perceived task difficulty and importance and variations in the cost of effort is proposed. Predictions from the model were confirmed in two experiments using the finger shuttlebox. When subjects expected the test task to be easy, importance of test outcome did not affect performance. However, when they expected the test task to be difficult, low outcome importance led to debilitation, and high importance to facilitation. If, in this condition, subjects experienced initial failure on the task perceived as difficult and important, helplessness rather than facilitation was observed. The model proposed may account for some of the conflicting results obtained in laboratory studies of human helplessness.  相似文献   
107.
As evidence for an hypothesis that pupil size plays an important role in nonverbal communication, Hess (1975) has reported that adults draw in appropriately sized pupils on his happy and angry faces task. However, he did not report a statistical test of his data. In this study, we replicated Hess' research and found congruent with his hypothesis that college students (n = 223) draw in significantly larger pupils on the happy face.  相似文献   
108.
Open classrooms with few rules, individualized instruction, and informal class organization present new problems for the application of behavior principles. The effects of three types of teacher aides on student achievement and on-task behavior were studied. Each was compared with a standard no-aide condition. Subjects were 54 third graders in two "open"-style classrooms. The three types of aide, helping adult, disciplinary adult, and helping fifth-grade aide, were compared in a multi-element design with a no-aide control. The helping-adult aide significantly affected the academic output of the class, when compared with the no-aide condition. All aide conditions produced more academic work and on-task behavior than did the standard no-aide condition.  相似文献   
109.
110.
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