全文获取类型
收费全文 | 1546篇 |
免费 | 99篇 |
国内免费 | 4篇 |
专业分类
1649篇 |
出版年
2023年 | 19篇 |
2022年 | 22篇 |
2021年 | 22篇 |
2020年 | 30篇 |
2019年 | 43篇 |
2018年 | 64篇 |
2017年 | 66篇 |
2016年 | 69篇 |
2015年 | 42篇 |
2014年 | 45篇 |
2013年 | 180篇 |
2012年 | 87篇 |
2011年 | 51篇 |
2010年 | 56篇 |
2009年 | 46篇 |
2008年 | 50篇 |
2007年 | 68篇 |
2006年 | 58篇 |
2005年 | 43篇 |
2004年 | 50篇 |
2003年 | 55篇 |
2002年 | 47篇 |
2001年 | 28篇 |
2000年 | 31篇 |
1999年 | 26篇 |
1998年 | 23篇 |
1997年 | 21篇 |
1996年 | 14篇 |
1995年 | 13篇 |
1994年 | 9篇 |
1993年 | 8篇 |
1992年 | 15篇 |
1991年 | 8篇 |
1990年 | 8篇 |
1989年 | 8篇 |
1988年 | 11篇 |
1987年 | 11篇 |
1985年 | 11篇 |
1984年 | 11篇 |
1982年 | 13篇 |
1981年 | 9篇 |
1979年 | 9篇 |
1978年 | 8篇 |
1977年 | 8篇 |
1976年 | 9篇 |
1975年 | 10篇 |
1973年 | 9篇 |
1971年 | 8篇 |
1970年 | 12篇 |
1967年 | 9篇 |
排序方式: 共有1649条查询结果,搜索用时 15 毫秒
871.
According to mental models theory, a key aspect of deductive reasoning is the production of alternative models that can falsify provisional conclusions. In the present paper, the possibility is investigated that there are individual differences in the ability to produce alternative models. The results indicate that some people do not proceed beyond the first model when they reason with syllogisms but that others do. Furthermore, the ability to generate alternatives can be independently measured by asking participants to generate different representations of pairs of premises. These findings support the predictions of mental models theory and also indicate the potential importance of alternatives generation as a measure of individual differences in processing style. 相似文献
872.
The 13th Amsterdam Colloquium was held at the Institute for Logic, Language and Linguistics at the University of Amsterdam, on 17-19 December 2001. 相似文献
873.
Participants were given a choice between two multiattribute alternatives (job offers). Preferences for the attributes were measured before, during, and after the choices were made. We found that over the course of decision making, the preferences shifted to cohere with the choice: The attributes of the option that was eventually chosen came to be rated more favorably than they had been rated initially, while the attributes of the rejected option received lower preference ratings than before. These coherence shifts were triggered by a single attribute that decisively favored one option (Experiment 1), and occurred spontaneously in the absence of a decisive attribute (Experiment 2). The coherence shift preceded commitment to choice. These findings favor constraint-satisfaction models of decision making. 相似文献
874.
These studies were designed to test cognitive dissonance theory's assertion that alternatives are not reevaluated before a choice. Participants viewed information about horses in a simulated race and rated each one's chance of winning three times before placing their bet and once after placing it. It was found that ratings of the chosen horse increased within the predecision period as well as after betting. Predecision bolstering occurred even when participants did not expect to bet, and predecision preference increased with task importance and participant expertise. The findings are attributed to maintenance of consistency throughout a cognitive system. 相似文献
875.
Previous work has demonstrated that drugs increasing brain concentrations of acetylcholine can enhance cognition in aging and brain-damaged organisms. The present study assessed whether galantamine (GAL), an allosteric modulator of nicotinic cholinergic receptors and weak acetylcholinesterase inhibitor, could improve acquisition and retention of an eyeblink (EB) classical conditioning task in healthy, young animals. We trained 24 rabbits (n = 8/group) in a 1000-msec trace Pavlovian EB conditioning paradigm in which a tone conditioned stimulus (CS) was presented for 500 msec, followed by a 500-msec trace period in which no stimuli were presented. A 100-msec corneal airpuff was the unconditioned stimulus (US). Acquisition sessions, consisting of 100 trials each, occurred daily for 10 consecutive days, followed by 3 d of extinction training. Animals were treated with one of three doses of GAL (0.0-3.0 mg/kg) prior to each session. Animals that received 3.0 mg/kg GAL showed significantly more EB conditioned responses (CRs) in fewer training trials than animals receiving either 1.5 mg/kg GAL or vehicle injections. GAL had no effect on CR performance during extinction. Pseudoconditioning control experiments, consisting of 200 explicitly unpaired tone-puff presentations indicated that GAL did not increase reactivity to the CS or US. These findings indicate that GAL may improve acquisition of moderately difficult associative learning tasks in healthy young organisms. 相似文献
876.
877.
Farrell S Lewandowsky S 《Journal of experimental psychology. Learning, memory, and cognition》2003,29(5):838-849
In short-term serial recall, similar sounding items are remembered less well than items that do not sound alike. This phonological similarity effect has been observed with lists composed only of similar items, and also with lists that mix together similar and dissimilar items. An additional consistent finding has been what the authors call dissimilar immunity, the finding that ordered recall of dissimilar items is the same whether these items occur in pure dissimilar or mixed lists. The authors present 3 experiments that disconfirm these previous findings by showing that dissimilar items on mixed lists are recalled better than their counterparts on pure lists if order errors are considered separately from intrusion errors (Experiment 1), or if intrusion errors are experimentally controlled (Experiments 2 and 3). The memory benefit for dissimilar items on mixed lists poses a challenge for current models of short-term serial recall. 相似文献
878.
The visual control of reaching and grasping: binocular disparity and motion parallax 总被引:6,自引:0,他引:6
Watt SJ Bradshaw MF 《Journal of experimental psychology. Human perception and performance》2003,29(2):404-415
The primary visual sources of depth and size information are binocular cues and motion parallax. Here, the authors determine the efficacy of these cues to control prehension by presenting them in isolation from other visual cues. When only binocular cues were available, reaches showed normal scaling of the transport and grasp components with object distance and size. However, when only motion parallax was available, only the transport component scaled reliably. No additional increase in scaling was found when both cues were available simultaneously. Therefore, although equivalent information is available from binocular and motion parallax information, the latter may be of relatively limited use for the control of the grasp. Binocular disparity appears selectively important for the control of the grasp. 相似文献
879.
This experiment examined how (disrespectful vs. respectful) treatment and (negative vs. positive) performance evaluation, both received from the same fellow group members, affects collective identification and willingness to engage in group-serving behavior. It was predicted and found that respectful as opposed to disrespectful intragroup treatment increased collective identification and willingness to engage in group-serving behavior in the immediate group situation, irrespective of whether intragroup evaluation was positive or negative. There was also evidence of a mediating role of collective identification. Regression analyses based on the measurement of perceived intragroup treatment and perceived intragroup evaluation as continuous variables corroborated these findings but also pointed to limits of the positive effects of respectful intragroup treatment. Finally, the interrelation of treatment and evaluation by fellow group members as two possible components of intragroup respect are discussed as well as the political dimension of research on intragroup respect. 相似文献
880.