全文获取类型
收费全文 | 757篇 |
免费 | 42篇 |
出版年
2024年 | 2篇 |
2023年 | 12篇 |
2022年 | 6篇 |
2021年 | 22篇 |
2020年 | 17篇 |
2019年 | 19篇 |
2018年 | 28篇 |
2017年 | 39篇 |
2016年 | 48篇 |
2015年 | 24篇 |
2014年 | 28篇 |
2013年 | 86篇 |
2012年 | 36篇 |
2011年 | 48篇 |
2010年 | 32篇 |
2009年 | 25篇 |
2008年 | 21篇 |
2007年 | 37篇 |
2006年 | 38篇 |
2005年 | 39篇 |
2004年 | 26篇 |
2003年 | 23篇 |
2002年 | 18篇 |
2001年 | 19篇 |
2000年 | 8篇 |
1999年 | 5篇 |
1998年 | 8篇 |
1997年 | 4篇 |
1996年 | 5篇 |
1995年 | 9篇 |
1994年 | 9篇 |
1993年 | 4篇 |
1992年 | 2篇 |
1991年 | 8篇 |
1990年 | 2篇 |
1988年 | 4篇 |
1987年 | 3篇 |
1986年 | 2篇 |
1985年 | 2篇 |
1984年 | 2篇 |
1982年 | 3篇 |
1979年 | 2篇 |
1978年 | 3篇 |
1975年 | 2篇 |
1971年 | 4篇 |
1970年 | 1篇 |
1968年 | 2篇 |
1967年 | 3篇 |
1955年 | 1篇 |
1953年 | 1篇 |
排序方式: 共有799条查询结果,搜索用时 15 毫秒
31.
Daughters SB Lejuez CW Bornovalova MA Kahler CW Strong DR Brown RA 《Journal of abnormal psychology》2005,114(4):729-734
A large percentage of individuals who enter residential substance abuse treatment drop out before completing treatment. Given that early treatment dropout places individuals at an increased risk for relapse, identifying the mechanisms underlying treatment dropout would have several important theoretical and clinical implications. In the current study, the authors examined levels of psychological and physical distress tolerance as a predictor of early treatment dropout in a residential substance abuse treatment facility. In a sample of 122 individuals entering a residential substance abuse treatment facility, level of psychological distress tolerance was predictive of early treatment dropout above and beyond relevant self-report variables. There was no relationship between physical distress tolerance and early treatment dropout. Implications for future studies and treatment development or modification are discussed. 相似文献
32.
Hughes CE Sigmon SC Pitts RC Dykstra LA 《Journal of the experimental analysis of behavior》2005,83(3):281-296
Key pecking by 3 pigeons was maintained by a multiple fixed-ratio 10, fixed-ratio 30, fixed-ratio 90 schedule of food presentation. Components differed with respect to amount of reinforcement, such that the unit price was 10 responses per 1-s access to food. Acute administration of morphine, l-methadone, and cocaine dose-dependently decreased overall response rates in each of the components. When a rate decreasing dose of morphine was administered daily, tolerance, as measured by an increase in the dose that reduced response rates to 50% of control (i.e., the ED50 value), developed in each of the components; however, the degree of tolerance was smallest in the fixed-ratio 90 component (i.e., the ED50 value increased the least). When the l-methadone dose-effect curve was redetermined during the chronic morphine phase, the degree of cross-tolerance conferred to l-methadone was similar across components, suggesting that behavioral variables may not influence the degree of cross-tolerance between opioids. During the chronic phase, the cocaine dose-effect curve shifted to the right for 2 pigeons and to the left for 1 pigeon, which is consistent with predictions based on the lack of pharmacological similarity between morphine and cocaine. When the morphine, l-methadone, and cocaine dose-effect curves were redetermined after chronic morphine administration ended, the morphine and l-methadone ED50s replicated those obtained prior to chronic morphine administration. The morphine data suggest that the fixed-ratio value (i.e., the absolute output) determines the degree of tolerance and not the unit price. 相似文献
33.
The reason why, since Descartes, nobody has found a solution to the mind–body problem seems to be that the problem itself
is a false or pseudo-problem. The discussion has proceeded within a pre-Cartesian conceptual framework which itself is a source
of the difficulty. Dualism and all its alternatives have preserved the same pre-Cartesian conceptual framework even while
denying Descartes’ dualism. In order to avoid this pseudo-problem, I introduce a new perspective with three elements: the
subject, the observed object, and the conditions of observation (given by the internal and external tools of observation).
On this new perspective, because of the conditions of observation, the mind and the brain belong to epistemologically different
worlds.
An erratum to this article is available at . 相似文献
34.
Marsh RL Hicks JL Cook GI 《Journal of experimental psychology. Learning, memory, and cognition》2005,31(1):68-75
In recent theories of event-based prospective memory, researchers have debated what degree of resources are necessary to identify a cue as related to a previously established intention. In order to simulate natural variations in attention, the authors manipulated effort toward an ongoing cognitive task in which intention-related cues were embedded in 3 experiments. High effort toward the ongoing task resulted in decreased prospective memory only when the cognitive processing required to identify the cue was similar to the cognitive processing required to complete the ongoing activity. When the required processing was different for the 2 tasks, cue detection was not affected by manipulated effort, despite there being an overall cost to decision latencies in the ongoing tasks from possessing the intention. Resource allocation policies and factors that affect them are proposed to account for ongoing vs. prospective memory task performance. 相似文献
35.
Many memory theorists have assumed that forced-choice recognition tests can rely more on familiarity, whereas item (yes-no)
tests must rely more on recollection. In actuality, several studies have found no differences in the contributions of recollection
and familiarity underlying the two different test formats. Using word frequency to manipulate stimulus characteristics, the
present study demonstrated that the contributions of recollection to item versus forced-choice tests is variable. Low word
frequency resulted in significantly more recollection in an item test than did a forced-choice procedure, but high word frequency
produced the opposite result. These results clearly constrain any uniform claim about the degree to which recollection supports
responding in item versus forced-choice tests. 相似文献
36.
In recent years, cognitive neuroscientists have began to explore the process of how sensory information gains access to awareness. To further probe this process, event-related functional magnetic resonance imaging (fMRI) was used while testing subjects with a paradigm known as the "attentional blink." In this paradigm, visually presented information sporadically fails to reach awareness. It was found that the magnitude and time course of activation within the anterior cingulate (BA 32), medial prefrontal cortex (BA 9), and frontopolar cortex (BA 10) predicted whether or not information was consciously perceived during the critical period for the attentional blink. These results are discussed in light of a neural framework for conscious processing. 相似文献
37.
Schmitt DP Alcalay L Allik J Angleitner A Ault L Austers I Bennett KL Bianchi G Boholst F Borg Cunen MA Braeckman J Brainerd EG Caral LG Caron G Casullo MM Cunningham M Daibo I De Backer C De Souza E Diaz-Loving R Diniz G Durkin K Echegaray M Eremsoy E Euler HA Falzon R Fisher ML Foley D Fry DP Fry S Ghayur MA Golden DL Grammer K Grimaldi L Halberstadt J Haque S Herrera D Hertel J Hoffmann H Hooper D Hradilekova Z Hudek-Kene-evi J Jaafar J Jankauskaite M Kabangu-Stahel H Kardum I Khoury B 《Journal of personality and social psychology》2004,86(4):560-584
38.
39.
Previous research has suggested that, relative to younger adults, older adults devote a greater proportion of their discourse processing to the situation model level. The current experiment assessed whether this is due, in part, to a preserved ability to focus on functionally appropriate information. The focus here was on spatial relations. Both reading time and recognition data showed superior performance for functional over nonfunctional information, and this functional effect was similar in younger and older adults. This is consistent with the idea that older adults' ability to process information at the situation model level is relatively well preserved. 相似文献