全文获取类型
收费全文 | 526篇 |
免费 | 20篇 |
出版年
2022年 | 5篇 |
2020年 | 4篇 |
2019年 | 5篇 |
2018年 | 11篇 |
2017年 | 11篇 |
2016年 | 12篇 |
2015年 | 10篇 |
2014年 | 12篇 |
2013年 | 53篇 |
2012年 | 25篇 |
2011年 | 23篇 |
2010年 | 11篇 |
2009年 | 12篇 |
2008年 | 35篇 |
2007年 | 18篇 |
2006年 | 22篇 |
2005年 | 16篇 |
2004年 | 19篇 |
2003年 | 19篇 |
2002年 | 18篇 |
2001年 | 5篇 |
2000年 | 11篇 |
1999年 | 6篇 |
1998年 | 7篇 |
1997年 | 15篇 |
1996年 | 7篇 |
1995年 | 7篇 |
1994年 | 6篇 |
1993年 | 5篇 |
1992年 | 7篇 |
1991年 | 5篇 |
1990年 | 3篇 |
1988年 | 14篇 |
1987年 | 6篇 |
1986年 | 6篇 |
1985年 | 6篇 |
1984年 | 9篇 |
1983年 | 6篇 |
1982年 | 7篇 |
1981年 | 5篇 |
1980年 | 3篇 |
1979年 | 3篇 |
1977年 | 3篇 |
1976年 | 7篇 |
1975年 | 6篇 |
1974年 | 5篇 |
1973年 | 3篇 |
1971年 | 3篇 |
1970年 | 6篇 |
1968年 | 3篇 |
排序方式: 共有546条查询结果,搜索用时 15 毫秒
381.
Of 96 male undergraduates, one-third saw a violent film which they were told represented a real event, one-third saw the same film presented as a fictional event, and the remaining subjects saw no film. One-half of the subjects in each group had been attacked previously by a confederate while the others had not. Each subject was then given an opportunity to aggress against the confederate by administering shocks to him as punishment in a learning task. Results indicate that subjects who observed real violence delivered stronger shocks to the confederate than subjects who viewed fantasy violence or saw no film. Subjects who were angered and saw the real film were the most punitive toward the confederate. 相似文献
382.
The social interaction between a behaviorally disordered preschool child and her classroom peers was measured under two conditions of contingent adult attention: (1) verbal praise and physical contact directed to the target subject's peers for appropriate interaction with the target subject, and (2) verbal praise and physical contact directed specifically to the target subject for engaging in appropriate interaction with peers. Continuous measures of interactive behavior were made during baseline, intervention, and return to baseline conditions. Results indicated that application of experimental contingencies to peers (Condition 1) rapidly increased appropriate social behaviors by the peers and also by the target subject. When experimental contingencies were applied to the target subject (Condition 2), a similar increase in appropriate social behaviors was noted for both the target subject and the peers. Additionally, during Conditions 1 and 2 the recipient(s) of contingent adult attention initiated more appropriate social contacts than did the interacting partner(s). 相似文献
383.
384.
Phillip Liss 《Attention, perception & psychophysics》1968,4(6):328-330
The identification of one, two, and four random letters was studied under three procedures: (1) backward masking by a visual noise; (2) concurrent masking by a visual noise; and (3) no masking. With backward masking the number of letters correctly identified was independent of the number presented. Direct judgments of the duration, brightness, contrast, sharpness, and texture of the letters were also made. Under backward masking the letters appeared to be on for a very brief duration, but with high apparent contrast. The results indicate that backward masking impairs identification by interrupting the stimulus processing, not by degrading the stimulus input. 相似文献
385.
In this case study of economists' forecasts concerning economic downturn, we examine key issues concerning the psychology of prediction and the controversy surrounding the value of expertise in forecasting. We examine when experts' knowledge promotes forecast accuracy and whether biases found in psychological studies (including underutilization of relevant base rates and tendencies to extreme prediction) occur in these economic forecasts. Experts' forecasts were compared to forecasts derived from base-rate models that relied on the historical frequencies of economic downturns. The performance patterns of the experts and models crossed over the forecast horizon. Experts outperformed models in shorter-term forecasting, whereas models outperformed experts in longer-term forecasting. These results highlight the abilities and limits of experts and models in prediction and the sources of their inaccuracy. 相似文献
386.
The classical visual latency explanation of the Pulfrich phenomenon is generalized to allow for the possibility that the visual system uses velocity information from motion detectors to compensate for spatial lag due to time lag, in identifying the instantaneous position of a moving object. The results of the reported experiment verify one consequence of the generalized version: the elliptical apparent path is skewed away from the filtered eye. The results suggest also that the extrapolation factor increases with visual latency and that there is a different extrapolation factor for each eye when the eyes are illuminated unequally. 相似文献
387.
388.
389.
Phillip Montague 《Journal of social philosophy》1994,25(2):44-56
Arguments aimed at undermining certain accounts of the grounds of political obligations—no matter how successful they may be—fall far short of demonstrating that there are no such obligations. Doubts about the efficacy of these arguments in this latter regard seem even more justified when it is recognized that parallel lines of reasoning can be developed in the area of filial obligations (and probably obligations of friendship and others as well), which arguments provide rather less than conclusive reasons for denying that there are filial obligations (obligations of friendship, and so forth). Furthermore, we have good reason to believe that there are political obligations if patriotism is a virtue, and also that patriotism is indeed a virtue. We therefore have a basis on which to affirm the existence of political obligations—a basis whose soundness is independent of the acceptability of particular accounts of the grounds of political obligation. Hence, even if standard accounts of the grounds of political obligations are problematic in certain respects, we should not regard this consideration as capable by itself of establishing that there are no such obligations. 相似文献
390.