全文获取类型
收费全文 | 5694篇 |
免费 | 278篇 |
出版年
2023年 | 51篇 |
2022年 | 50篇 |
2021年 | 94篇 |
2020年 | 114篇 |
2019年 | 158篇 |
2018年 | 206篇 |
2017年 | 221篇 |
2016年 | 238篇 |
2015年 | 166篇 |
2014年 | 184篇 |
2013年 | 706篇 |
2012年 | 310篇 |
2011年 | 332篇 |
2010年 | 213篇 |
2009年 | 192篇 |
2008年 | 263篇 |
2007年 | 250篇 |
2006年 | 210篇 |
2005年 | 172篇 |
2004年 | 183篇 |
2003年 | 174篇 |
2002年 | 149篇 |
2001年 | 106篇 |
2000年 | 106篇 |
1999年 | 75篇 |
1998年 | 62篇 |
1997年 | 61篇 |
1996年 | 47篇 |
1995年 | 42篇 |
1994年 | 39篇 |
1993年 | 35篇 |
1992年 | 62篇 |
1991年 | 39篇 |
1990年 | 66篇 |
1989年 | 62篇 |
1988年 | 54篇 |
1987年 | 39篇 |
1986年 | 36篇 |
1985年 | 34篇 |
1984年 | 33篇 |
1983年 | 30篇 |
1982年 | 37篇 |
1981年 | 22篇 |
1980年 | 20篇 |
1979年 | 21篇 |
1978年 | 26篇 |
1977年 | 13篇 |
1974年 | 11篇 |
1972年 | 13篇 |
1966年 | 14篇 |
排序方式: 共有5972条查询结果,搜索用时 15 毫秒
101.
102.
103.
104.
In order to investigate lateral asymmetry in tactile perception, two or four fingers of normal primary school children were touched sequentially. Stimulation was either unimanual or bimanual and either verbal or nonverbal responses were required. Right hand advantage was demonstrated subsequent to uni- and bimanual stimulation in both the verbal and nonverbal response conditions. Neither an age nor a sex effect on laterality was found. Right hand advantage was affected by direction of stimulation in the bimanual condition. Left hemispheric dominance was argued to be related to the temporal nature of the tasks. 相似文献
105.
This paper describes a computational method for weighted euclidean distance scaling which combines aspects of an analytic solution with an approach using loss functions. We justify this new method by giving a simplified treatment of the algebraic properties of a transformed version of the weighted distance model. The new algorithm is much faster than INDSCAL yet less arbitrary than other analytic procedures. The procedure, which we call SUMSCAL (subjectivemetricscaling), gives essentially the same solutions as INDSCAL for two moderate-size data sets tested.Comments by J. Douglas Carroll and J. B. Kruskal have been very helpful in preparing this paper. 相似文献
106.
Otto P. van Driel 《Psychometrika》1978,43(2):225-243
In the applications of maximum likelihood factor analysis the occurrence of boundary minima instead of proper minima is no exception at all. In the past the causes of such improper solutions could not be detected. This was impossible because the matrices containing the parameters of the factor analysis model were kept positive definite. By dropping these constraints, it becomes possible to distinguish between the different causes of improper solutions. In this paper some of the most important causes are discussed and illustrated by means of artificial and empirical data.The author is indebted to H. J. Prins for stimulating and encouraging discussions. 相似文献
107.
108.
109.
Paul M.G. Emmelkamp Mieke van der Helm Berendien L. van Zanten Ivo Plochg 《Behaviour research and therapy》1980,18(1):61-66
Fifteen obsessive-compulsive patients were given treatment consisting of ten sessions of gradual exposure in vivo. For half of the patients gradual exposure in vivo was preceded by self-instructional training.Treatment resulted in significant improvement on anxiety and avoidance scales, Leyton Obsessional Inventory, Self-rating Depression Scale and on ratings for anxious mood and depression. Neither the post-test nor the follow-ups 1 month and 6 months later indicated a difference between the effects of the two conditions. Self-instructional training did not enhance the effectiveness of gradual exposure in vivo. 相似文献
110.
A theoretical framework is proposed for understanding perceptual skills in their functional context. Pictorial perception is construed as a functionally specialised skill whose pervasive importance in modern education derives from the proliferation of pictorial materials in Western culture. Drawing on cross-cultural research, the major components of the skill are identified as (1) detection of appropriate contexts for its application, (2) selection of a limiting frame of reference, (3) use of conventional criteria of fidelity to recognise depicted items, (4) sensitivity to impoverished depth cues, (5) an expectation of finding in the picture most of the information necessary for its disambiguation, and (6) various assumptions about the range of cognitive inferences that may legitimately be made ‘beyond the information given’. Training studies are interpreted as suggesting that the skill can be enhanced through guided experience. 相似文献