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   19212篇
  免费   1856篇
  国内免费   1277篇
  22345篇
  2023年   306篇
  2022年   299篇
  2021年   362篇
  2020年   719篇
  2019年   758篇
  2018年   709篇
  2017年   850篇
  2016年   828篇
  2015年   557篇
  2014年   721篇
  2013年   2374篇
  2012年   447篇
  2011年   580篇
  2010年   456篇
  2009年   660篇
  2008年   832篇
  2007年   889篇
  2006年   814篇
  2005年   699篇
  2004年   609篇
  2003年   502篇
  2002年   461篇
  2001年   293篇
  2000年   274篇
  1999年   229篇
  1998年   191篇
  1997年   163篇
  1996年   130篇
  1995年   118篇
  1994年   110篇
  1993年   101篇
  1992年   72篇
  1991年   57篇
  1990年   54篇
  1989年   38篇
  1988年   47篇
  1987年   35篇
  1985年   382篇
  1984年   429篇
  1983年   351篇
  1982年   458篇
  1981年   454篇
  1980年   456篇
  1979年   410篇
  1978年   458篇
  1977年   375篇
  1976年   367篇
  1975年   280篇
  1974年   278篇
  1973年   236篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
This study provides a reexamination of the role of different decisional strategies in facilitating progress in occupational decision making. Although the assumptions that a rational decision making style is the preferred mode of vocational functioning has been endorsed in a variety of career theories and interventions, there has been conflicting evidence about the validity of this assumption. To examine the role of different decisional approaches in the progress of making an occupational decision, the rational, intuitive, and dependent decision making style scores of 71 undergraduate students were used to predict progress in occupational decision making. The results of the regression analyses failed to provide support for the assumption that a rational style is the most effective in accomplishing this careerrelated task, but indicated strong support for the conclusion that the use of dependent decisional strategies is damaging, particularly in early stages of the decisional process.  相似文献   
102.
Three measures of chronic self-esteem, plus four measures developed to assess situational components of self-esteem (task-specific self-esteem and social self-esteem), were administered to 238 undergraduates at a large, urban university and a community college in the southeastern United States. Evidence for a composite construct of self-esteem was found. Results also indicate task-specific self-esteem correlates as high as .42 (p < .01) with chronic self-esteem and as high as .76 (p < .01) with social self-esteem. Task-specific self-esteem was found to be a better predictor of grade point average than chronic or social self-esteem. Suggestions are made for further research on the situational components of self-esteem to extend current findings.  相似文献   
103.
Transfer of matching-to-figure samples in the pigeon   总被引:2,自引:1,他引:1       下载免费PDF全文
Three pigeons were trained on a modified six-key matching-to-sample procedure. The third peck on the figure-sample key (which presented a bird, hand, face, beetle, rabbit, fish, flower, or red hue, as the sample) lighted only one comparison key. Every three additional pecks on the sample lighted another comparison key, up to a maximum of five keys. Pecks on keys of matching figures produced grain. Pecks on nonmatching keys (mismatches) turned off all lights on the comparison keys and repeated the trial. Three figures were used during acquisition. The birds learned to peck each sample until the matching comparison stimulus appeared on one of three comparison stimulus keys, and then to peck that key. Later, five novel stimuli, employed as both sample and comparison stimuli, and two additional matching keys were added. Each bird showed matching transfer to the novel samples. The data suggest that the birds may have learned the concept of figure matching rather than a series of two-component chains or discrete five-key discriminations.  相似文献   
104.
Rats' lever pressing produced sucrose reinforcers on a variable-interval schedule where, in different conditions, the duration of a stimulus presented immediately after reinforcement was either correlated or uncorrelated with the duration of the current interreinforcement interval. Under the baseline schedule, in which no stimulus was presented, the minimum interreinforcement interval was 8 s and the mean postreinforcement pause of each subject approximated this value. Response rates increased slowly over the first 10 to 15 s and then remained roughly constant throughout the remainder of the interval. In both the correlated and uncorrelated conditions, the added stimulus resulted in the postreinforcement pauses lengthening to values in excess of the duration of the preceding stimulus. This resulted in a poststimulus pause which was, in most cases, roughly constant irrespective of the duration of the preceding stimulus, or of the reinforcement contingencies prevailing immediately after stimulus offset. Local response-rate patterns in the uncorrelated conditions were similar to those obtained under the baseline schedule in which no stimulus was presented. However, in the correlated condition local response rates increased across the remainder of the interreinforcer interval. Further, the rate of acceleration was inversely related to the duration of the preceding stimulus. These results show that a correlation between stimulus duration and the ensuing time to reinforcement can control behavior—a type of temporal control not previously reported.  相似文献   
105.
106.
107.
108.
109.
110.
Fear and courage     
S. Rachman   《Behavior Therapy》1984,15(1):109-120
  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