全文获取类型
收费全文 | 2418篇 |
免费 | 138篇 |
出版年
2023年 | 21篇 |
2022年 | 26篇 |
2021年 | 26篇 |
2020年 | 52篇 |
2019年 | 79篇 |
2018年 | 109篇 |
2017年 | 115篇 |
2016年 | 85篇 |
2015年 | 71篇 |
2014年 | 88篇 |
2013年 | 285篇 |
2012年 | 151篇 |
2011年 | 162篇 |
2010年 | 75篇 |
2009年 | 93篇 |
2008年 | 116篇 |
2007年 | 115篇 |
2006年 | 103篇 |
2005年 | 109篇 |
2004年 | 93篇 |
2003年 | 85篇 |
2002年 | 67篇 |
2001年 | 23篇 |
2000年 | 21篇 |
1999年 | 42篇 |
1998年 | 28篇 |
1997年 | 18篇 |
1996年 | 19篇 |
1995年 | 17篇 |
1994年 | 17篇 |
1993年 | 17篇 |
1992年 | 18篇 |
1991年 | 11篇 |
1990年 | 14篇 |
1989年 | 11篇 |
1988年 | 8篇 |
1987年 | 11篇 |
1986年 | 10篇 |
1985年 | 13篇 |
1984年 | 14篇 |
1983年 | 13篇 |
1982年 | 15篇 |
1981年 | 8篇 |
1980年 | 9篇 |
1979年 | 9篇 |
1976年 | 7篇 |
1975年 | 7篇 |
1973年 | 6篇 |
1972年 | 5篇 |
1967年 | 4篇 |
排序方式: 共有2556条查询结果,搜索用时 46 毫秒
951.
Michael T. Swanston Nicholas J. Wade Hiroshi Ono Koichi Shibuta 《Attention, perception & psychophysics》1992,52(6):705-713
A horizontally moving target was followed by rotation of the eyes alone or by a lateral movement of the head. These movements resulted in the retinal displacement of a vertically moving target from its perceived path, the amplitude of which was determined by the phase and amplitude of the object motion and of the eye or head movements. In two experiments, we tested the prediction from our model of spatial motion (Swanston, Wade, & Day, 1987) that perceived distance interacts with compensation for head movements, but not with compensation-for eye movements with respect to a stationary head. In both experiments, when the vertically moving target was seen at a distance different from its physical distance, its perceived path was displaced relative to that seen when there was no error in pereived distance, or when it was pursued by eye movements alone. In a third experiment, simultaneous measurements of eye and head position during lateral head movements showed that errors in fixation were not sufficient to require modification of the retinal paths determined by the geometry of the observation conditions in Experiments 1 and 2. 相似文献
952.
953.
954.
High school students differing in achievement motivation were subjects in a learned helplessness experiment using a yoked triadic design with noncontingent rewards. A strong helplessness effect was observed in both high- and low-achievement motivation groups. A postexperimental questionnaire revealed that perceived response-outcome independence was induced under the noncontingent reinforcement condition, but was not associated with perceived failure. The results were seen as strong support for the original learned helplessness model in two important respects. First they refute recent claims that learned helplessness depends on aversive outcomes, and second they show that human helplessness can be distinguished from experimenter-induced failure. 相似文献
955.
S.Stefan Soltysik George E Wolfe Thomas Nicholas W.Jeffrey Wilson JoséL Garcia-Sanchez 《Learning and motivation》1983,14(1):1-29
Well-trained classically conditioned stimuli, presented unreinforced, were protected from extinction when they were followed by a signal of the omission of the reinforcer (conditioned inhibitor Konorskian type) in eight cats. An aversive classical conditioning paradigm with shock as the reinforcer was used. Of several behavioral (leg flexion, vocalization) and organismic arousal (heart rate, respiration rate, respiration amplitude) measures of conditioned responses, the respiration amplitude changes were found to be most informative for the continuous assessment of elicited arousal of low and medium intensity. In all subjects conditioned stimuli presented during extinction in serial compound with the conditioned inhibitor elicited larger responses than did conditioned stimuli presented alone during extinction. The mechanism of protection from extinction in a paradigm in which the elicitor of learned behavior occurs prior to the conditioned inhibitor provides the organism with the mechanism for the maintenance of learned behavior in the absence of a reinforcer. 相似文献
956.
957.
Ialongo NS Werthamer L Kellam SG Brown CH Wang S Lin Y 《American journal of community psychology》1999,27(5):599-641
We assessed the immediate effects of two universal, first-grade preventive interventions on the proximal targets of poor achievement, concentration problems, aggression, and shy behaviors, known early risk behaviors for later substance use/abuse, affective disorder, and conduct disorder. The classroom-centered (CC) intervention was designed to reduce these early risk behaviors by enhancing teachers' behavior management and instructional skills, whereas the family-school partnership (FSP) intervention was aimed at improving parent-teacher communication and parental teaching and child behavior management strategies. Over the course of first and second grades, the CC intervention yielded the greatest degree of impact on its proximal targets, whereas the FSP's impact was somewhat less. The effects were influenced by gender and by preintervention levels of risk. Analyses of implementation measures demonstrated that greater fidelity to the intervention protocols was associated with greater impact on behavior ratings and on achievement scores, thus providing some evidence of specificity in the effect of the interventions. 相似文献
958.
Skin Conductance Responses (SCRs) to familiar and unfamiliar names and faces were recorded from independent groups of subjects,
using two different presentation designs: the first employing fewer familiar than unfamiliar items (Tranel, Fowles, and Damasio,
1985) and the second employing equal numbers of familiar and unfamiliar items. In both designs, familiar faces were responded
to significantly more strongly than unfamiliar faces, whereas for names there was no difference in responses to familiar and
unfamiliar stimuli. Faces produced significantly larger overall SCRs than names in the unequal familiar/unfamiliar ratio design,
but this effect was not observed in the equal ratio design. The results are discussed with particular reference to those previously
published by Tranel et al. (1985) and in relation to work both on covert recognition in prosopagnosia and on one of the delusional
misidentification syndromes known as the Capgras delusion.
This study was carried out with generous support from the EJLB Foundation (Canada) and the Wellcome Trust. 相似文献
959.
One extreme or the other or perhaps the golden mean? Issues of spatial resolution in face processing
The findings of some of the key studies that have examined the contribution of different bands of spatial information, specified
in terms of cycles per face, to face recognition, and identification are reviewed. Based on findings from studies of low-,
high-, and band-pass filtering, it is concluded that neither low facial scales nor high facial scales are optimal. Instead,
a center range of facial scales, approximately 8-16 cycles per face, appears to make the greatest contribution to the recognition
process. A study of identification of band-pass filtered faces is reported that reinforces the view derived from the literature.
This indicated that a band with a harmonic mean of 11.1 cycles per face provided the most efficient recognition, with speed
and accuracy declining at lower and higher bands. 相似文献
960.
The effects of choice and no choice of preferred and non preferred instructional activities on the academic behavior of 3 students with disabilities were investigated. Participant preferences for spelling tasks were assessed and an ABCDEF design was used to examine choice and preference within 6 experimental conditions: a) choice of preferred tasks, b) choice of non preferred tasks, c) no choice of preferred tasks, d) no choice of non preferred tasks, e) no choice of preferred tasks (yoked-control), and f) no choice of non preferred tasks (yoked-control). Results indicate that all 3 participants had higher levels of task engagement when working with preferred tasks, regardless of a choice or no choice format. The findings from this investigation contribute to the growing body of research that focuses on developing interventions that are responsive to individual student preferences. 相似文献