全文获取类型
收费全文 | 387篇 |
免费 | 27篇 |
国内免费 | 2篇 |
出版年
2023年 | 4篇 |
2022年 | 3篇 |
2021年 | 7篇 |
2020年 | 12篇 |
2019年 | 14篇 |
2018年 | 13篇 |
2017年 | 7篇 |
2016年 | 13篇 |
2015年 | 17篇 |
2014年 | 12篇 |
2013年 | 56篇 |
2012年 | 20篇 |
2011年 | 22篇 |
2010年 | 11篇 |
2009年 | 23篇 |
2008年 | 25篇 |
2007年 | 18篇 |
2006年 | 18篇 |
2005年 | 12篇 |
2004年 | 12篇 |
2003年 | 20篇 |
2002年 | 12篇 |
2001年 | 6篇 |
2000年 | 4篇 |
1999年 | 4篇 |
1998年 | 4篇 |
1997年 | 8篇 |
1996年 | 5篇 |
1995年 | 2篇 |
1994年 | 3篇 |
1993年 | 1篇 |
1992年 | 2篇 |
1991年 | 4篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1984年 | 3篇 |
1982年 | 1篇 |
1980年 | 3篇 |
1977年 | 1篇 |
1975年 | 1篇 |
1972年 | 1篇 |
1971年 | 1篇 |
1970年 | 1篇 |
1969年 | 1篇 |
1967年 | 2篇 |
1960年 | 1篇 |
1958年 | 1篇 |
排序方式: 共有416条查询结果,搜索用时 15 毫秒
61.
Bumblebees (Bombus spp.) foraging in the field typically reject flowers where they detect the olfactory footprints of previous visitors and hence
avoid recently emptied inflorescences. A growing number of studies have begun to illustrate that associative learning shapes
the development of this process, in both bumblebees and other bee species. This raises the question of what the default response
to such marks is, but little is known about how inexperienced foragers use social information. Here, we offered flower-naive
bees a choice between scent-marked flowers and unmarked alternatives and found that individuals neither avoided nor preferred
marked flowers. Our findings provide no support for ‘hard-wired’ responses to scent marks in bumblebees and highlight the
importance of associative learning in shaping social information use to match local circumstances. 相似文献
62.
63.
64.
The role of task persistence in young adolescence for successful educational and occupational attainment in middle adulthood 总被引:1,自引:0,他引:1
The main purpose of the present study was to investigate the importance of task persistence in young adolescence for successful educational and occupational attainment in middle adulthood. Data from age 13 (N = 1,092) and adult age (age 43 for women, N = 569 and age 47 for men, N = 393) were taken from the Swedish longitudinal research program entitled "Individual Development and Adaptation." In line with previous research, task persistence was found to be related to changes in grades between age 13 and age 16, over and above other childhood factors. Task persistence at age 13 was also a significant predictor of both income and occupational level in middle adulthood for the men, controlling for a number of childhood factors (including intelligence), and even when educational attainment in adulthood was taken into account. Finally, task persistence was related to educational attainment in adulthood. The authors suggest that task persistence is a second fundamental factor besides general mental ability, influencing attainment within the area of working life and education. The influence of task persistence is discussed in form of personality-environment selection mechanisms. 相似文献
65.
The aim of the present fMRI study was to localize brain areas that were uniquely activated for phonological versus spatial working memory. Previous studies have reported inconsistent results, most likely because of methodological heterogeneity varying both stimuli and instructions in the same study. Here, identical consonant-vowel-consonant non-words were visually presented to the subjects in a 2-back paradigm under two different instructions; the subjects either had to memorize the non-words per se or their location. The results give evidence for a hemispheric organization of working memory, with dominance for processing of phonological information in the left hemisphere and frontal cortex, and spatial information in the right hemisphere and parietal cortex. The results also reflect a certain overlap between the neuronal network for working memory and processing of verbal and spatial material. These findings are discussed with regard to processing specificity and the extent that activated areas also may reflect perceptual processes. 相似文献
66.
The main purpose of this study was to examine whether the use of internal imagery would affect high jumping performance for active high jumping athletes. Over a period of six weeks, a group of active high jumpers were trained with an internal imagery program for a total of 72 minutes. This group was compared to a control group consisting of active high jumpers that only maintained their regular work-outs during the same time period. Four variables were measured; jumping height, number of failed attempts, take-off angle, and bar clearance. There was a significant improvement on bar clearance for the group that trained imagery (p < 0.05) but not for the control group. No other differences were found. The results suggest that internal imagery training may be used to improve a component of a complex motor skill. Possible explanations and future recommendations are discussed. 相似文献
67.
Jolanda Jetten Aarti Iyer Dimitrios Tsivrikos Brian M. Young 《European journal of social psychology》2008,38(5):866-879
Two studies considered when the individual mobility strategy of attending university has psychological costs in terms of poor adjustment to university life. Study 1, (N = 74) examined both economic considerations affecting university choice and identity‐related factors among open day attendees. Expected identification as a university student and preparedness for university life was affected by economic factors (economic benefit of university attendance and status of the considered universities) but also negatively related to perceived incompatibility with one's social background. These findings were replicated in a longitudinal study in which students' perceptions were assessed before entering university (T1), after being at university for two months (T2) and again after being at university for 8 months (T3; N = 109). Social class (T1) predicted perceived incompatibility but not economic factors. In addition, economic factors and incompatibility predicted group identification (T2) but only perceived incompatibility predicted longer‐term identification (T3). Belief that university education serves as a successful individual mobility strategy (T3) was indirectly negatively affected by initial incompatibility (T1), but positively with perceiving economic benefits of a university degree (T1). Implications for the (economic) benefits versus (identity) costs of individual mobility strategies are discussed. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献
68.
Information about stressful life experiences obtained from patients during diagnostic interviews is an important foundation for clinical decision making. In this study self-reports from 115 committed psychiatric patients of experiences of mechanical restraint were compared with medical records. The sensitivity of patient self-reports was 73% (11/15) and the specificity was 92% (92/100). No clear relationship between psychiatric symptoms and reliability of self-reports was identified. The results highlight the subjective qualities of narratives about past experiences. 相似文献
69.
A sound that is briefly interrupted by a silent gap is perceived as discontinuous. However, when the gap is filled with noise, the sound may be perceived as continuing through the noise. It has been shown that this continuity illusion depends on the masking of the omitted target sound, but the underlying mechanisms have yet to be quantified thoroughly. In this article, we systematically quantify the relation between perceived continuity and the duration, relative power, or notch width of the interrupting broadband noise for interrupted and noninterrupted amplitude-modulated tones at different frequencies. We fitted the psychometric results in order to estimate the range of the noise parameters that induced auditory grouping. To explain our results within a common theoretical framework, we applied a power spectrum model to thedifferent masking resultsand estimated the critical bandwidth of the auditory filter that may be responsible for the continuity illusion. Our results set constraints on the spectral resolution of the mechanisms underlying the continuity illusion and provide a stimulus set that can be readily applied for neurophysiological studies of its neural correlates. 相似文献
70.
Adrian Voßkühler Volkhard Nordmeier Lars Kuchinke Arthur M. Jacobs 《Behavior research methods》2008,40(4):1150-1162
In the present article, a new software is introduced that allows the recording and analyzing of eye- and mouse-tracking data
from slideshow-based experiments in parallel. The Open Gaze and Mouse Analyzer (OGAMA) is written in C#.NET and has been released
as an open-source project. Its main features include slide-show design, the recording of gaze and mouse data, database-driven
preprocessing and filtering of gaze and mouse data, the creation of attention maps, areas-of-interest definition, and replay.
Eyetracking and/or presentation soft- and hardware recordings in ASCII format can be imported. Data output is provided that
can be used directly with different statistical software packages. Because it is open source, one can easily adapt it to suit
one’s needs. 相似文献