全文获取类型
收费全文 | 6564篇 |
免费 | 344篇 |
国内免费 | 1篇 |
专业分类
6909篇 |
出版年
2024年 | 16篇 |
2023年 | 72篇 |
2022年 | 64篇 |
2021年 | 119篇 |
2020年 | 140篇 |
2019年 | 206篇 |
2018年 | 250篇 |
2017年 | 261篇 |
2016年 | 292篇 |
2015年 | 211篇 |
2014年 | 222篇 |
2013年 | 772篇 |
2012年 | 368篇 |
2011年 | 389篇 |
2010年 | 216篇 |
2009年 | 216篇 |
2008年 | 312篇 |
2007年 | 269篇 |
2006年 | 220篇 |
2005年 | 225篇 |
2004年 | 229篇 |
2003年 | 225篇 |
2002年 | 164篇 |
2001年 | 119篇 |
2000年 | 131篇 |
1999年 | 92篇 |
1998年 | 66篇 |
1997年 | 55篇 |
1996年 | 45篇 |
1995年 | 41篇 |
1994年 | 28篇 |
1993年 | 34篇 |
1992年 | 60篇 |
1991年 | 53篇 |
1990年 | 76篇 |
1989年 | 64篇 |
1988年 | 61篇 |
1987年 | 39篇 |
1986年 | 52篇 |
1985年 | 51篇 |
1984年 | 44篇 |
1983年 | 37篇 |
1982年 | 26篇 |
1981年 | 15篇 |
1980年 | 14篇 |
1979年 | 28篇 |
1978年 | 26篇 |
1977年 | 18篇 |
1974年 | 14篇 |
1972年 | 16篇 |
排序方式: 共有6909条查询结果,搜索用时 0 毫秒
91.
Marjolijn M. Vermande John H. van den Bercken Eric E. De Bruyn 《Journal of psychopathology and behavioral assessment》1996,18(1):49-70
In this study it was determined whether (a) classification as opposed to absence of classification has an effect on the quality of clinical hypotheses (b) the DSM-III-R and the CBCL have a different effect on the quality of clinical hypotheses, and (c) the potential difference between the DSM-III-R and the CBCL is moderated by the different number of syndromes identified by these systems. To investigate these questions, an experiment was conducted in which 86 clinicians generated hypotheses for six cases. The clinicians were divided into a DSM-III-R, a CBCL, and a control group. Of the six cases, two were classified by both classification systems as one syndrome, two were classified as one syndrome by the DSM-III-R but as two syndromes by the CBCL, and two were classified as two syndromes by the DSM-III-R but as one syndrome by the CBCL. The quality of the hypotheses was determined by means of four dependent variables selected from an overview of qualitative criteria: explanatory value, redundancy, possibility of operationalization, and specificity. No differences between the CBCL and the control groups were found. The DSM group performed better than the control group regarding explanatory value and redundancy. The DSM-III-R group also scored better than the CBCL group regarding explanatory value, particularly when the number of identified syndromes was two for the CBCL and one for the DSM-III-R. 相似文献
92.
93.
94.
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
95.
Two experiments were carried out in order to try to resolve the controversy about whether the semantic processing of a word necessarily involves all the elements of its meaning. In the first experiment, subjects categorized a list of auditorially presented words according to whether or not they were natural consumable solids (e.g., “apple“). They were then given an unexpected test of their ability to recall the whole list, which contained equal numbers of words with none, one, two, or all three of the target components. The results confirmed the prediction that the greater the number of components a word has in common with a target category, the better it will be recalled. The second experiment used a visual presentation of a list of words, which subjects scanned for members of a particular target category. There were four different target categories assigned to independent groups of subjects. The results again confirmed the prediction. On the assumption that memorability in such tasks is determined by amount of processing, we conclude that some elements of the meaning of a word can be processed without having to process all of them. 相似文献
96.
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
97.
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
98.
99.
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
100.
Richard A. van den Pol Brian A. Iwata Martin T. Ivancic Terry J. Page Nancy A. Neef F. Paul Whitley 《Journal of applied behavior analysis》1981,14(1):61-69
This study examined classroom-based instruction in restauranting skills for handicapped persons. Three male students were taught each of four skill components in sequential order: locating, ordering, paying, and eating and exiting. Training was implemented in a multiple baseline design across subjects and consisted of modeling and role playing in conjunction with photo slide sequences and a simulated ordering counter. The use of a menu containing general item classes and a finger matching procedure for identifying errors in the delivery of change greatly reduced the reading and math skills necessary to enter and complete the program. Periodic probes were conducted in a McDonald's restaurant prior to, during, and up to one-year following the termination of training. In addition, two probes (overt and covert observation) were conducted in a Burger King restaurant to assess further generalization to a location different from the one depicted throughout training. Results showed that students' performance on restaurant probes improved as a result of training, generalized to novel settings, maintained over an extended period of time, and was comparable to that of a normative sample of nonretarded persons. 相似文献