全文获取类型
收费全文 | 4564篇 |
免费 | 589篇 |
国内免费 | 513篇 |
出版年
2024年 | 14篇 |
2023年 | 111篇 |
2022年 | 111篇 |
2021年 | 151篇 |
2020年 | 269篇 |
2019年 | 256篇 |
2018年 | 207篇 |
2017年 | 291篇 |
2016年 | 288篇 |
2015年 | 181篇 |
2014年 | 241篇 |
2013年 | 725篇 |
2012年 | 159篇 |
2011年 | 191篇 |
2010年 | 157篇 |
2009年 | 222篇 |
2008年 | 267篇 |
2007年 | 232篇 |
2006年 | 217篇 |
2005年 | 186篇 |
2004年 | 173篇 |
2003年 | 147篇 |
2002年 | 135篇 |
2001年 | 101篇 |
2000年 | 95篇 |
1999年 | 86篇 |
1998年 | 57篇 |
1997年 | 51篇 |
1996年 | 35篇 |
1995年 | 41篇 |
1994年 | 47篇 |
1993年 | 29篇 |
1992年 | 17篇 |
1991年 | 30篇 |
1990年 | 18篇 |
1989年 | 17篇 |
1988年 | 18篇 |
1987年 | 11篇 |
1986年 | 9篇 |
1985年 | 10篇 |
1984年 | 15篇 |
1983年 | 5篇 |
1982年 | 7篇 |
1981年 | 6篇 |
1980年 | 10篇 |
1979年 | 6篇 |
1978年 | 5篇 |
1977年 | 6篇 |
1976年 | 2篇 |
1975年 | 1篇 |
排序方式: 共有5666条查询结果,搜索用时 15 毫秒
991.
Andrew M. Colman Briony D. Pulford Fergus Bolger 《Organizational behavior and human decision processes》2007,104(2):193-206
In individual choices between alternatives x and y, the availability of a third alternative z, judged inferior to x but not to y, tends to increase preferences for x. Two experiments investigated corresponding strategic asymmetric dominance effects in games. In Experiment 1, 72 players chose strategies in six symmetric 3 × 3 games, each having one strategy dominating just one other, or in reduced 2 × 2 games constructed by deleting the dominated strategies. Asymmetrically dominated strategies, even when unavailable (phantom decoy), increased choices of the strategies that dominated them and bolstered decision confidence. In Experiment 2, 81 participants played 12 similar but asymmetric games with or without dominated strategies, and similar asymmetric dominance, phantom decoy, and confidence effects were found. 相似文献
992.
The children's gambling task (CGT [Kerr, A., & Zelazo, P. D. (2004). Development of “Hot” executive function: The children's gambling task. Brain and Cognition, 55, 148–157]) involves integrating information about losses and gains to maximize winnings when selecting cards from two decks. Both cognitive complexity and control (CCC) theory and relational complexity (RC) theory attribute younger children's difficulty to task complexity. In CCC theory, identification of the advantageous deck requires formulation of a higher-order rule so that gains and losses can be considered in contradistinction. According to RC theory, it entails processing the ternary relation linking three variables (deck, magnitude of gain, magnitude of loss). We designed two less complex binary-relational versions in which either loss or gain varied across decks, with the other held constant. The three closely matched versions were administered to 3–5-year-olds. Consistent with complexity explanations, children in all age groups selected cards from the advantageous deck in the binary-relational versions, but only 5-year-olds did so on the ternary-relational CGT. 相似文献
993.
Reiner Hedrich 《Journal for General Philosophy of Science》2007,38(2):261-278
String theory is at the moment the only advanced approach to a unification of all interactions, including gravity. But, in
spite of the more than 30 years of its existence, it does not make any empirically testable predictions, and it is completely
unknown which physically interpretable principles could form the basis of string theory. At the moment, “string theory” is
no theory at all, but rather a labyrinthic structure of mathematical procedures and intuitions. The only motivations for string
theory consist in the mutual incompatibility of the standard model of quantum field theory and of general relativity as well
as in the metaphysics of the unification program of physics, aimed at a final unified theory of all interactions, including
gravity. The article gives a perspective on the problems leading to and resulting from this situation.
相似文献
Reiner HedrichEmail: Email: |
994.
This study investigates the latent structure of individual differences in vocational, leisure, and family interests. The participants consisted of 302 French adults who rated their like or dislike for activities based on Holland’s RIASEC typology and presented in three life domains: work, family and leisure. The multitrait-multimethod model proposed by Eid [Eid, M. (2000). A multitrait-multimethod model with minimal assumptions. Psychometrika 65, 241-261.] was used with the vocational interests as standard comparison, and was applied separately on each of the 6 RIASEC types. Results indicated that interests strongly intercorrelated whatever their vocational vs. leisure or family contextualization. However, since these correlations were controlled for measurement error, the results also suggested that the effects of these contextualizations of the activities could not be ignored because they accounted for a non negligible part of the variance for several activities. Theoretical and practical implications are discussed and directions for future research are presented. 相似文献
995.
Benjamin van Gelderen Marc van Veldhoven Marcel Croon 《Journal of Vocational Behavior》2007,71(3):446-459
The authors examined the relationship between psychological strain, emotional dissonance and emotional job demands during a working day of 65 Dutch (military) police officers, using a 5-day diary design. We hypothesized that emotional dissonance partly mediated the relationship between psychological strain at the start and at the end of a work shift. We also tested the mediating role of emotional dissonance between emotional job demands and psychological strain at the end of a work shift. Results of structural equation modeling analyses showed that psychological strain at the start of a work shift had a positive effect on the experience of emotional dissonance and psychological strain at the end of a work shift. Emotional dissonance partly mediated the relationship between psychological strain at the start and psychological strain at the end of a work shift. Results are discussed in light of conservation of resources theory (Hobfoll, S. E. (1988). The ecology of stress. New York: Hemisphere Publishing Corporation). 相似文献
996.
Narrow Window theory, suggested by Y. Kareev ten years ago, has so far focused on one central implication of the limited capacity of working memory on intuitive correlation estimation, namely, overestimation of the distal population correlation. This paper points to additional and perhaps more dramatic implications due to the large dispersion of intuitive estimates: (a) large estimation errors, possibly causing overestimation of negligible rhos, misses of strong rhos, and distorted hierarchies of the rhos between different pairs of variables; and (b) large interpersonal differences in the estimation of any given rho and highly incongruent hierarchies of estimated correlations between different pairs of variables. These implications impede both individuals' adaptation to the empirical world and communication among themselves. 相似文献
997.
Despite the role afforded interoceptive fear conditioning in etiologic accounts of panic disorder, there are no good experimental demonstrations of such learning in humans. The aim of the present study was to evaluate the interoceptive conditioning account using 20% carbon dioxide (CO(2))-enriched air as an interoceptive conditioned stimulus (CS) (i.e., physiologically inert 5-s exposures) and unconditioned stimulus (US) (i.e., physiologically prepotent 15-s exposures). Healthy participants (N=42) were randomly assigned to one of three conditions: a CS-only, contingent CS-US pairings, or unpaired/non-contingent CS and US presentations. Electrodermal and self-report (e.g., distress, fear) served as indices of conditioned emotional responding. Results showed greater magnitude electrodermal and evaluative fear conditioning in the paired relative to the CS-only condition. The explicitly unpaired condition showed even greater electrodermal and evaluative responding during acquisition, and marked resistance to extinction. The latter results are consistent with the possibility that the unpaired procedure constituted a partial reinforcement procedure in which CO(2) onset was paired with more extended CO(2) exposure on 50% of the trials. Overall, the findings are consistent with contemporary learning theory accounts of panic. 相似文献
998.
器官的功能和储备与中医阴阳关系探讨 总被引:1,自引:0,他引:1
中医是中华民族的瑰宝,但理论体系中的概念和命题很模糊。比较中西医在哲学抽象上的差异,采用哲学中物质无限性和有限性命题,以独特视角结合临床研究结果,阐述了阴阳在医学中的含义,将功能和储备这一对概念定义为阴阳,并指出功能和储备是生命中不可缺少的支点。 相似文献
999.
证候存在的逻辑回答 总被引:1,自引:0,他引:1
黄开泰 《医学与哲学(人文社会医学版)》2007,28(3):74-75
认为存在的就是客观的,包含了自然客观、思维客观和理性客观;把疾病现象和疾病本质划等号,在症状层面规范证候标准,抛弃中医辨证思维,就等于否定中医。物质不能等于客观,不能取代存在。证候属于理性客观,发生于中医学,是中医“阴阳神气”观念临床实在化(还原)的必然。 相似文献
1000.