全文获取类型
收费全文 | 1532篇 |
免费 | 579篇 |
国内免费 | 156篇 |
出版年
2024年 | 5篇 |
2023年 | 27篇 |
2022年 | 27篇 |
2021年 | 68篇 |
2020年 | 88篇 |
2019年 | 78篇 |
2018年 | 83篇 |
2017年 | 82篇 |
2016年 | 96篇 |
2015年 | 72篇 |
2014年 | 75篇 |
2013年 | 226篇 |
2012年 | 67篇 |
2011年 | 80篇 |
2010年 | 52篇 |
2009年 | 75篇 |
2008年 | 77篇 |
2007年 | 67篇 |
2006年 | 66篇 |
2005年 | 54篇 |
2004年 | 50篇 |
2003年 | 69篇 |
2002年 | 43篇 |
2001年 | 45篇 |
2000年 | 42篇 |
1999年 | 35篇 |
1998年 | 28篇 |
1997年 | 17篇 |
1996年 | 30篇 |
1995年 | 28篇 |
1994年 | 35篇 |
1993年 | 32篇 |
1992年 | 39篇 |
1991年 | 25篇 |
1990年 | 13篇 |
1989年 | 19篇 |
1988年 | 17篇 |
1987年 | 8篇 |
1986年 | 17篇 |
1985年 | 24篇 |
1984年 | 18篇 |
1983年 | 21篇 |
1982年 | 23篇 |
1981年 | 19篇 |
1980年 | 16篇 |
1979年 | 20篇 |
1978年 | 26篇 |
1977年 | 20篇 |
1976年 | 18篇 |
1975年 | 5篇 |
排序方式: 共有2267条查询结果,搜索用时 15 毫秒
861.
汉字认知的“复脑效应”的实验研究 总被引:21,自引:0,他引:21
该研究探讨了汉字的字形、字音、字义认知上的大脑两半球的功能差异。实验一使用同一的“汉字对”刺激材料,三组被试分别进行了字形、字音、字义异/同判断,结果发现反应时和正确反应率均表明,字形、字音、字义认知均与两个大脑半球有关,显示出了汉字认知的“复脑效应”。实验二使用“汉字-图形”意义整合判断课题进一步检验了字义认知的“复脑效应”,结果与实验一相同。作者认为,汉字认知的“复脑效应”与汉字本身的特点是分不开的。 相似文献
862.
863.
864.
时间知觉与估计的认知理论综述 总被引:13,自引:0,他引:13
本文回顾时间知觉与估计的实验研究 ,总结该领域的国内外研究结果 ,对该领域的各主要认知模型作了较全面的考察和评述 ,并进一步探讨了时间认知领域研究的今后发展 ,尤其是时间知觉与估计研究的脑电研究思路。 相似文献
865.
青少年时间管理倾向量表的编制 总被引:183,自引:0,他引:183
时间管理倾向是个体在运用时间方式上所表现出来的心理和行为特征,具有多维度多层次的心理结构。参照有关文献并结合国内的广泛调查研究,编制出我国青少年时间管理倾向量表。通过对1027名大中学生的探索性因素分析和507名大中学生的验证性因素分析,结果表明时间管理倾向问卷由时间价值感(社会取向和个人取向的时间价值感)、时间监控观(设置目标、计划、优先级、时间分配和反馈性)和时间效能感(时间管理效能和时间管理行为效能)三个维度构成。该量表的因素结构清晰,信度和效度较好,可以作为评鉴青少年时间管理倾向的有效工具。 相似文献
866.
867.
Grace RC 《Journal of the experimental analysis of behavior》1994,61(1):113-129
An extension of the generalized matching law incorporating context effects on terminal-link sensitivity is proposed as a quantitative model of behavior under concurrent chains. The contextual choice model makes many of the same qualitative predictions as the delay-reduction hypothesis, and assumes that the crucial contextual variable in concurrent chains is the ratio of average times spent, per reinforcement, in the terminal and initial links; this ratio controls differential effectiveness of terminal-link stimuli as conditioned reinforcers. Ninety-two concurrent-chains data sets from 19 published studies were fitted to the model. Averaged across all studies, the model accounted for 90% of the variance in pigeons' relative initial-link responding. The model therefore demonstrates that a matching law analysis of concurrent chains—the assumption that relative initial-link responding equals relative terminal-link value—remains quantitatively viable. Because the model reduces to the generalized matching law when terminal-link duration is zero, it provides a quantitative integration of concurrent schedules and concurrent chains. 相似文献
868.
Duration comparison: relative stimulus differences stimulus age, and stimulus predictiveness. 总被引:1,自引:1,他引:0
下载免费PDF全文
![点击此处可从《Journal of the experimental analysis of behavior》网站下载免费的PDF全文](/ch/ext_images/free.gif)
D A Stubbs L R Dreyfus J G Fetterman D M Boynton N Locklin L D Smith 《Journal of the experimental analysis of behavior》1994,62(1):15-32
Under a psychophysical trials procedure, pigeons were presented with a red light of one duration followed by a green light of a second duration. Eight geometrically spaced base durations were paired with one of four shorter and four longer durations as the alternate member of a duration pair, with different pairs randomly intermixed. One choice was reinforced if red had lasted longer than green, and a second choice was reinforced if green had lasted longer. Performance was compared when all the base durations and their pair members were included (entire-range condition) or when only the four longest base durations and their comparison durations (restricted-range condition) were used. Discrimination sensitivity decreased for longer duration pairs under both conditions, supporting a memory-based account. Sensitivity was lower under the restricted-range condition. Under both conditions, a bias to report "green as longer" increased as the second green duration increased. Bias changed as a matching function of the green-duration predictiveness of the correct choice. The results are related to a quantitative model of timing and remembering proposed by Staddon. 相似文献
869.
Chelonis JJ King G Logue AW Tobin H 《Journal of the experimental analysis of behavior》1994,62(1):33-43
Five pigeons served as subjects in an experiment that examined the effects of variable as opposed to fixed delays on preference in a self-control paradigm (choice between larger, more delayed and smaller, less delayed reinforcers). Nonindependent concurrent variable-interval schedules were used to measure choice. When delays to the larger, more delayed reinforcers were variable as opposed to fixed, the subjects showed an increased preference for that alternative (the self-control alternative). A series of regressions revealed that the hyperbolic decay model and incentive theory provided poor fits to the data, but a modified version of the generalized matching law provided an adequate fit. Together, consistent with a general prediction made by discounting models, the data supported the conclusion that variable delays can increase self-control. However, specific discounting models were not able to explain the present data well. 相似文献
870.
Five pigeons were trained in an analogue foraging procedure in which, by completing a travel requirement, they entered a “patch” in which a reinforcer might be available after an unpredictable time. They also had the opportunity, by emitting a defined response, to exit the patch and travel to another patch. Prey availability in a patch was not signaled. Data were collected on the length of time that subjects stayed in patches before exiting (residence times) as a function of various travel requirements: travel for a fixed time in blackout, fixed-interval schedule traveling, fixed-time traveling with an added response required to terminate traveling, and fixed-ratio traveling. For each of these conditions, the required amount of travel (time or responses) was varied over a wide range. As previously reported, residence times increased with increases in fixed-time traveling, as they did with increasing fixed-interval or fixed-ratio traveling. There was no evidence that adding response or work requirements systematically affected residence time except via increased travel time, although 3 of the 5 birds stayed longer in a patch under higher fixed-ratio values. A “threshold-maximization” model described the data well with a single parameter that was consistent across subjects, procedures, and experiments. 相似文献