全文获取类型
收费全文 | 717篇 |
免费 | 22篇 |
专业分类
739篇 |
出版年
2022年 | 4篇 |
2021年 | 4篇 |
2020年 | 6篇 |
2019年 | 9篇 |
2018年 | 19篇 |
2017年 | 14篇 |
2016年 | 23篇 |
2015年 | 10篇 |
2014年 | 21篇 |
2013年 | 88篇 |
2012年 | 32篇 |
2011年 | 23篇 |
2010年 | 17篇 |
2009年 | 17篇 |
2008年 | 22篇 |
2007年 | 34篇 |
2006年 | 17篇 |
2005年 | 28篇 |
2004年 | 28篇 |
2003年 | 22篇 |
2002年 | 26篇 |
2001年 | 15篇 |
2000年 | 10篇 |
1999年 | 17篇 |
1998年 | 9篇 |
1997年 | 8篇 |
1996年 | 7篇 |
1995年 | 6篇 |
1994年 | 7篇 |
1993年 | 9篇 |
1992年 | 11篇 |
1991年 | 6篇 |
1990年 | 9篇 |
1989年 | 5篇 |
1988年 | 8篇 |
1985年 | 4篇 |
1984年 | 6篇 |
1983年 | 10篇 |
1982年 | 5篇 |
1981年 | 12篇 |
1980年 | 12篇 |
1979年 | 9篇 |
1978年 | 6篇 |
1977年 | 6篇 |
1976年 | 9篇 |
1975年 | 7篇 |
1974年 | 13篇 |
1973年 | 11篇 |
1971年 | 6篇 |
1970年 | 5篇 |
排序方式: 共有739条查询结果,搜索用时 0 毫秒
221.
Stuart Miller Jeanine Rossbach Robert MUNSON 《Journal of applied social psychology》1981,11(4):356-365
The questionnaire responses of both high social density and low social density dormitory residents, divided into high and low groups on affiliative tendency, were examined. Although both high and low affiliates experienced more satisfaction living in low social density dorms, which were associated with higher levels of social interaction than high social density dorms, levels of reported stress varied as a function of both social density and affiliation. High affiliates experienced more, while low affiliates experienced less, stress in the low social density dorm than in the high social density dorm. Results were discussed in terms of the possession of differential coping skills with respect to achieving independence (in the low social density dorm) and dealing with overload from strangers (in the high social density dorm). 相似文献
222.
Stuart J. Schleien Paul Wehman John Kiernan 《Journal of applied behavior analysis》1981,14(4):513-519
This study demonstrates the acquisition and generalization of dart skills by three severely multihandicapped adults. The program took place in a community adult development center. By identifying the motor responses required to play darts, a 7-step task analysis was generated to facilitate instruction. Systematic training procedures using applied behavior analysis were implemented. A combination multiple baseline across subjects and changing criterion design was used. The results indicated that not only could this supposedly difficult skill be acquired by severely multihandicapped individuals, but that they could also generalize to other appropriate environments. Acquisition of this skill could help optimize their use of free time for leisure pursuits in a variety of settings. 相似文献
223.
A nonparametric test of dispersion with paired replicates data is described which involves jackknifing logarithmic transformations of the ratio of variance estimates for the pre- and post-treatment populations. Results from a Monte Carlo simulation show that the test performs well underH
o and has good power properties. Examples are given of applying the procedure on psychiatric data.A referee called our attention to valuable references which related to our work, and he suggested the inclusion of competing jackknife procedures into our studies. 相似文献
224.
Inductive learning by machines 总被引:1,自引:0,他引:1
Stuart Russell 《Philosophical Studies》1991,64(1):37-64
The research described herein has been supported by funding from the Lockheed AI Center and the California MICRO Program. The author would also like to thank Benjamin Grosof, John Pollock, Devika Subramanian, Thomas Dietterich and Steven Muggleton for their valuable comments and suggestions. 相似文献
225.
Following the release of the first COVID-19 vaccinations many people utilized social media to promote vaccination among their social circles. These attempts to persuade others to get vaccinated ranged from positive encouragement (e.g., emphasizing the prosocial benefits and positive outcomes) to shame and threats (e.g., name calling and threating to end friendships over vaccination status). The present study investigated how these different social media messages affected COVID-19 vaccination intentions. In June 2021, shortly after vaccines had been made freely available to anyone over the age of 16 in the United States, unvaccinated participants read a manipulated Twitter message designed to be either encouraging or shaming. Message-type did not significantly affect intentions to become vaccinated against COVID-19; however, participants who saw the encouraging message reported that the post made them feel more likely to get vaccinated. Self-efficacy was also manipulated but did not reveal any significant effects. Additional analyses suggest that having personal experience with COVID-19 moderates reactions to these different messages. We discuss limitations and promising avenues for future research on the effects of social media messages on health behaviors. 相似文献
226.
Forty male undergraduates ingested either a high dose of alcohol or a placebo, and were either provided with a nonaggressive norm or not, prior to being provoked by an opponent during a competitive reaction time task. Aggression was assessed by the intensity of shocks administered by the subject to the bogus opponent. Results suggest that the provision of an explicit nonaggressive norm enabled highly intoxicated subjects to moderate their aggressive responding even in a highly competitive situation. These findings are discussed in terms of current cognitive disruption models of alcohol-related aggression which assume intoxicated persons are unable to process information concerning appropriate standards of conduct. 相似文献
227.
228.
Macdonald SW Stigsdotter-Neely A Derwinger A Bäckman L 《Journal of experimental psychology. General》2006,135(3):368-390
Rate of forgetting is putatively invariant across individuals, sharing few associations with individual-differences variables known to influence encoding and retrieval. This classic topic in learning and memory was revisited using a novel statistical application, multilevel modeling, to examine whether (a) slopes of forgetting varied across individuals and (b) observed individual differences in forgetting shared systematic relations with adult age, learning speed, and cognitive ability. Participants (N = 136) received mnemonic training prior to memorizing 4-digit numbers to perfection, and retention was tested immediately after training and after 30 min, 24 hr, 7 weeks, and 8 months. Slower rate of learning to criterion, older age, and poorer cognitive performance predicted accelerated forgetting with associations most pronounced within 24 hr from baseline. Observed correlates of differential forgetting slopes are similar to those previously found to affect encoding, suggesting continuity rather than asymmetry of prediction for these memory processes. 相似文献
229.
While many have suggested that to withdraw medical interventions is ethically equivalent to withholding them, the moral complexity of actually withdrawing life supportive interventions from a patient cannot be ignored. Utilizing interplay between expository and narrative styles, and drawing upon our experiences with patients, families, nurses, and physicians when life supports have been withdrawn, we explore the changeable character of boundaries in end-of-life situations. We consider ways in which boundaries imply differences – for example, between cognition and performance – and how the encounter with boundaries can generate altered meanings important for understanding decisions and actions in these contexts. We conclude that the reliance on mere roles to support the moral weight of withdrawing medical interventions is inadequate. Roles that lead us to such moments are exceeded by the responsibility encountered in such moments. And here, we suggest, is the momentous character of withdrawal: it presents the grave astonishment, the trembling awe, in the not-being-there of the other in death. 相似文献
230.