全文获取类型
收费全文 | 623篇 |
免费 | 44篇 |
国内免费 | 1篇 |
出版年
2023年 | 5篇 |
2022年 | 7篇 |
2021年 | 9篇 |
2020年 | 12篇 |
2019年 | 19篇 |
2018年 | 24篇 |
2017年 | 27篇 |
2016年 | 28篇 |
2015年 | 18篇 |
2014年 | 20篇 |
2013年 | 64篇 |
2012年 | 37篇 |
2011年 | 33篇 |
2010年 | 22篇 |
2009年 | 12篇 |
2008年 | 22篇 |
2007年 | 23篇 |
2006年 | 27篇 |
2005年 | 14篇 |
2004年 | 12篇 |
2003年 | 13篇 |
2002年 | 10篇 |
2001年 | 14篇 |
2000年 | 6篇 |
1999年 | 12篇 |
1998年 | 13篇 |
1997年 | 10篇 |
1996年 | 4篇 |
1995年 | 6篇 |
1994年 | 8篇 |
1993年 | 11篇 |
1992年 | 11篇 |
1991年 | 12篇 |
1990年 | 7篇 |
1989年 | 8篇 |
1988年 | 3篇 |
1987年 | 7篇 |
1986年 | 7篇 |
1985年 | 6篇 |
1984年 | 7篇 |
1983年 | 4篇 |
1981年 | 6篇 |
1979年 | 3篇 |
1978年 | 10篇 |
1974年 | 4篇 |
1973年 | 4篇 |
1969年 | 3篇 |
1968年 | 3篇 |
1965年 | 2篇 |
1964年 | 2篇 |
排序方式: 共有668条查询结果,搜索用时 15 毫秒
561.
Yohimbine impairs extinction of cocaine-conditioned place preference in an alpha2-adrenergic receptor independent process
下载免费PDF全文
![点击此处可从《Learning & memory (Cold Spring Harbor, N.Y.)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Davis AR Shields AD Brigman JL Norcross M McElligott ZA Holmes A Winder DG 《Learning & memory (Cold Spring Harbor, N.Y.)》2008,15(9):667-676
Extinction, a form of learning that has the ability to reshape learned behavior based on new experiences, has been heavily studied utilizing fear learning paradigms. Mechanisms underlying extinction of positive-valence associations, such as drug self-administration and place preference, are poorly understood yet may have important relevance to addiction treatment. Data suggest a major role for the noradrenergic system in extinction of fear-based learning. Employing both pharmacological and genetic approaches, we investigated the role of the alpha(2)-adrenergic receptor (alpha(2)-AR) in extinction of cocaine-conditioned place preference (CPP) and glutamatergic transmission in the bed nucleus of the stria terminalis (BNST). We found that pre-extinction systemic treatment with the alpha(2)-AR antagonist yohimbine impaired cocaine CPP extinction in C57BL/6J mice, an effect that was not mimicked by the more selective alpha(2)-AR antagonist, atipamezole. Moreover, alpha(2A)-AR knockout mice exhibited similar cocaine CPP extinction and exacerbated extinction impairing effects of yohimbine. Using acute brain slices and electrophysiological approaches, we found that yohimbine produces a slowly evolving depression of glutamatergic transmission in the BNST that was not mimicked by atipamezole. Further, this action was extant in slices from alpha(2A)-AR knockout mice. Our data strongly suggest that extinction-modifying effects of yohimbine are unlikely to be due to actions at alpha(2A)-ARs. 相似文献
562.
563.
Renee O. Hawkins Shobana Musti-Rao Cynthia Hughes Laura Berry Shannon McGuire 《Journal of Behavioral Education》2009,18(4):300-318
Researchers have documented the positive effects of classwide peer tutoring on academic performance, engagement, and other
social behaviors of students with and without disabilities. Commonly, in classwide peer tutoring, students are paired and
the class is divided in half. Points are awarded for tutoring behavior and academic responding during the tutoring session.
At the end of the session, the half of the class with the most points earns a reward. In the current study, a fifth-grade
teacher implemented classwide peer tutoring for multiplication facts. Instead of the traditional reinforcement system, a randomized
classwide interdependent group contingency was implemented. Applying a multiple-probe design across problem sets, students
demonstrated increased multiplication fact fluency across three problem sets. Discussion focuses on applied implications for
contingency management when implementing classwide peer tutoring programs. 相似文献
564.
Hughes RW Vachon F Jones DM 《Journal of experimental psychology. Learning, memory, and cognition》2007,33(6):1050-1061
The disruption of short-term memory by to-be-ignored auditory sequences (the changing-state effect) has often been characterized as attentional capture by deviant events (deviation effect). However, the present study demonstrates that changing-state and deviation effects are functionally distinct forms of auditory distraction: The disruption of visual-verbal serial recall by changing-state speech was independent of the effect of a single deviant voice embedded within the speech (Experiment 1); a voice-deviation effect, but not a changing-state effect, was found on a missing-item task (Experiment 2); and a deviant voice repetition within the context of an alternating-voice irrelevant speech sequence disrupted serial recall (Experiment 3). The authors conclude that the changing-state effect is the result of a conflict between 2 seriation processes being applied concurrently to relevant and irrelevant material, whereas the deviation effect reflects a more general attention-capture process. 相似文献
565.
Hughes BM 《Psychological reports》2007,100(1):76-82
A brief, 3-item index of social support among college students, the Social Support at University Scale, is introduced. Its psychometric properties are examined in a sample of 90 college students (51 women, 39 men) and compared with those of an equivalent scale distributed among 100 university staff (67 women, 33 men). The Short-Form Social Support Questionnaire, the Perceived Stress Scale, and the Hospital Anxiety and Depression Scale were also administered to each participant. The data suggest that the Social Support at University Scale possesses internal consistency reliability suitable for research (alpha = .68), external validity as indicated by comparisons between the student and staff samples, concurrent validity as indicated by correlations with measures of generic social support, and criterion validity as indicated by associations with known correlates of social support, namely, perceived stress, anxiety, and depression. 相似文献
566.
567.
568.
B Hughes 《Human movement science》2001,20(4-5):371-400
The potential of airborne sonar to provide effective information about three-dimensional (3D) spatial layouts was assessed in four companion experiments. Blindfolded participants, never given visual access to the layout of a large room, were asked to use a sonar device whose output they had never previously encountered to judge the passability (by normal walking) of apertures between two aligned wall panels. Estimates were made from fixed and variable locations, approaches to the apertures were made from orthogonal and oblique angles, and the panels were at different distances and orientations. In each experiment, participants gave evidence of an ability to immediately use the information in structured echoes to make these judgments, though aperture location, approach angles, wall alignment and orientation each had significant effects on performance. The data are compared with performance under visual and nonechoic auditory conditions and are discussed with respect to the notions of potential information and effective information during these perceptually guided tasks. 相似文献
569.
Guérard K Hughes RW Tremblay S 《Quarterly journal of experimental psychology (2006)》2008,61(5):752-762
This paper reports the first demonstration of an isolation effect or von Restorff effect (von Restorff, 1933) in the context of a spatial-memory task: Short-term serial recall was enhanced for both the location and the serial position of one red dot presented amongst a sequence of otherwise black dots. When the serial position of the isolate was fixed, the spatial isolation effect only emerged when participants received a control block of trials before the block of isolation trials (Experiment 1). However, when the serial position of the isolate was varied across isolation trials, an isolation effect was still produced regardless of condition order (Experiment 2). It is suggested that both temporal grouping strategies and greater item-specific processing may have contributed to the enhanced retention of the isolate. 相似文献
570.
Krista E. Hughes 《Dialog》2017,56(1):45-52
The doctrines of forensic justification and simul iustus et peccator assume a primarily moral theo‐cosmology. However, the former constricts the excessiveness of divine grace, while the latter fails to adequately capture the fullness of the human condition. Freeing divine grace and theological anthropology from the moral requires a shift in emphasis toward suffering and an acknowledgment that a deep root of sin is creaturely vulnerability. In this case, the incurved self might symbolize the fearful, pulling goods toward the self for protection. While accountability for sin remains important, the first response to the fearful, who act from a sense of deep vulnerability, is compassion rather than judgment. In this way grace attends to but ultimately exceeds the moral. 相似文献