全文获取类型
收费全文 | 2242篇 |
免费 | 99篇 |
国内免费 | 3篇 |
出版年
2021年 | 29篇 |
2020年 | 41篇 |
2019年 | 46篇 |
2018年 | 50篇 |
2017年 | 51篇 |
2016年 | 73篇 |
2015年 | 42篇 |
2014年 | 67篇 |
2013年 | 271篇 |
2012年 | 91篇 |
2011年 | 92篇 |
2010年 | 47篇 |
2009年 | 63篇 |
2008年 | 81篇 |
2007年 | 73篇 |
2006年 | 70篇 |
2005年 | 55篇 |
2004年 | 50篇 |
2003年 | 71篇 |
2002年 | 55篇 |
2001年 | 40篇 |
2000年 | 48篇 |
1999年 | 34篇 |
1998年 | 37篇 |
1997年 | 37篇 |
1996年 | 21篇 |
1995年 | 19篇 |
1994年 | 28篇 |
1993年 | 20篇 |
1992年 | 30篇 |
1991年 | 21篇 |
1990年 | 23篇 |
1988年 | 25篇 |
1987年 | 20篇 |
1985年 | 20篇 |
1984年 | 25篇 |
1983年 | 21篇 |
1982年 | 25篇 |
1981年 | 21篇 |
1980年 | 22篇 |
1979年 | 26篇 |
1978年 | 25篇 |
1977年 | 21篇 |
1976年 | 20篇 |
1975年 | 28篇 |
1974年 | 28篇 |
1973年 | 25篇 |
1972年 | 19篇 |
1968年 | 22篇 |
1967年 | 18篇 |
排序方式: 共有2344条查询结果,搜索用时 15 毫秒
101.
102.
Time-series analysis in operant research 总被引:1,自引:0,他引:1
A time-series method is presented, nontechnically, for analysis of data generated in individual-subject operant studies, and is recommended as a supplement to visual analysis of behavior change in reversal or multiple-baseline experiments. The method can be used to identify three kinds of statistically significant behavior change: (a) changes in score levels from one experimental phase to another, (b) reliable upward or downward trends in scores, and (c) changes in trends between phases. The detection of, and reliance on, serial dependency (autocorrelation among temporally adjacent scores) in individual-subject behavioral scores is emphasized. Examples of published data from the operant literature are used to illustrate the time-series method. 相似文献
103.
The present study was undertaken to evaluate the practicability and efficacy of treating enuretic children in residential Children's Homes by means of the enuresis alarm. A control group design was employed with 19 and 20 subjects in the treatment and control groups respectively. Eighteen of the nineteen treatment group children achieved initial arrest of enuresis in a mean of 11.9 weeks of treatment (range 5–28 weeks). Over the initial 12-week period, the treatment group showed a statistically significant reduction in mean wetting frequency, both over time and in comparison with the control group. After a follow-up period of at least 20 months. 17 of the 19 children were known to be dry. The results of an independent evaluation are reported, and it is concluded that alarm treatment is as effective and practicable in Children's Homes as it is in family situations. 相似文献
104.
105.
106.
107.
We argue that central monitoring of efferent signals (CME) is a necessary and perhaps sufficient condition for the most accurate reproduction of a linear movement. In a movement duplication task where the subject sets or is given a criterion movement which he then attempts to reproduce, we argue that voluntary criterion and reproduction movements may be based upon some ‘pre-set’ instruction whereas passive movement duplication must be based upon proprioceptive information. We show that subjects can perform a visual signal detection task during the voluntary criterion movement which does not affect accuracy of reproduction. The same task carried out during the passive criterion movement does affect reproduction. These findings suggest that pick-up of proprioceptive information is not involved in voluntary movement. 相似文献
108.
A logical analysis is made of the Matching Familiar Figures (MFF) Test on the basis of which children have been classified as "impulsive" or "reflective." The reflective strategy is implicitly preferred to the impulsive because the reflective child makes fewer errors though generally taking longer to make his first response. We show that the test allows the choice of a number of "game plans" and speed-accuracy tradeoffs which in practice may not be very different. Error rates may not indicate perceptual sensitivity, in any case, since sensitivity and response factors may be confounded in the error rate. Using a visual running-memory-span task to avoid the inherent difficulties of the MFF test, we found that children previously classified on the basis of that test as impulsive or reflective did not differ in recognition accuracy but did differ in response bias and response latency. Accuracy and bias are estimated by way of Luce's choice theory (Luce, 1963), and the results are discussed in those terms. 相似文献
109.
110.
Jason T Siegel Eusebio M Alvaro William D Crano Andrew Lac Sarah Ting Sara Pace Jones 《Health psychology》2008,27(2):170-178
OBJECTIVE: Approximately 6,000 Americans die every year awaiting an organ transplant. Health promotion interventions may alleviate the shortage of viable organs by increasing the number of registered organ donors. This study is the first to evaluate the differential effectiveness of various organ donor messages in naturalistic settings. DESIGN: A 4 (Appeal)x4 (Exemplar)x4 (Location) counterbalanced quasi-experimental design was implemented. MAIN OUTCOME MEASURE: The behavioral outcome measure was the number of individuals who registered to be organ donors at computer kiosks. RESULTS: A number of significant main effects and interactions emerged. Most notably, of the 4 different appeals (counterargument, emotional, motivating action, dissonance), counterargument was by far the most efficacious, especially in academic-type settings (library, university, community college); the emotional appeal was most successful in hospitals. CONCLUSIONS: The findings from this study have implications for both organ donor investigations and health campaign research in general. Statistical interactions highlight the importance of evaluating multiple exemplars in multiple locations for each type of appeal when conducting health campaign research. 相似文献