全文获取类型
收费全文 | 4207篇 |
免费 | 211篇 |
国内免费 | 2篇 |
专业分类
4420篇 |
出版年
2021年 | 37篇 |
2020年 | 68篇 |
2019年 | 108篇 |
2018年 | 131篇 |
2017年 | 117篇 |
2016年 | 131篇 |
2015年 | 100篇 |
2014年 | 120篇 |
2013年 | 468篇 |
2012年 | 160篇 |
2011年 | 191篇 |
2010年 | 115篇 |
2009年 | 110篇 |
2008年 | 152篇 |
2007年 | 150篇 |
2006年 | 141篇 |
2005年 | 118篇 |
2004年 | 102篇 |
2003年 | 120篇 |
2002年 | 119篇 |
2001年 | 102篇 |
2000年 | 89篇 |
1999年 | 73篇 |
1998年 | 46篇 |
1997年 | 43篇 |
1996年 | 49篇 |
1995年 | 52篇 |
1994年 | 47篇 |
1993年 | 35篇 |
1992年 | 53篇 |
1991年 | 54篇 |
1990年 | 51篇 |
1989年 | 51篇 |
1988年 | 41篇 |
1987年 | 37篇 |
1986年 | 47篇 |
1985年 | 43篇 |
1984年 | 47篇 |
1983年 | 37篇 |
1982年 | 43篇 |
1981年 | 37篇 |
1979年 | 43篇 |
1978年 | 33篇 |
1975年 | 35篇 |
1974年 | 34篇 |
1972年 | 31篇 |
1970年 | 40篇 |
1968年 | 35篇 |
1967年 | 42篇 |
1966年 | 33篇 |
排序方式: 共有4420条查询结果,搜索用时 15 毫秒
51.
Lars Smith 《Journal of the experimental analysis of behavior》1967,10(6):529-533
Three pigeons were each trained to perform a discrimination problem and a matching problem. Following acquisition, delays of 1 to 7 sec were interposed after stimulus presentation on both problems. Accuracy of responding on these two types of delay procedures was observed to be a function of length of delay interval. Performance was consistently poorer on the delayed matching problem than on the delayed discrimination problem. 相似文献
52.
Kenneth D. Hopkins Robert A. Smith Warren G. Findley John N. McCall 《Psychometrika》1967,32(3):355-360
53.
Marilyn C. Smith 《Quarterly journal of experimental psychology (2006)》1967,19(4):350-352
Proponents of a “single channel” theory of the psychological refractory period have not specified whether the single channel occupies only the decision component of the response selection, only the motor or response component, or both. In this experiment, the delay in the RT to the second of two successively presented stimuli was examined as a function of whether or not an overt motor response was made to the first stimulus, keeping the decision component constant. It was found that in both conditions RT2 was delayed, suggesting that the decision component was a part of the single channel. However, RT2 was delayed by a significantly greater amount if a motor response was required, indicating that the motor component is part of the single channel as well. Implications of the results for an expectancy theory of the psychological refractory period are discussed. 相似文献
54.
In this paper we concern ourselves with the problem of whether or not conditioning stimuli of other modalities or stimuli applied to a distant locus of the body interact with a sensitive test of somesthetic temporal acuity we have called the gap test. The results of the experiment indicate that visual stimuli do not exert an observable influence on this temporal judgment, but that auditory stimuli and contralateral stimulation in the same modality do show a significant but relatively small effect. This is compared and contrasted with the very large and persistent effect reported when the conditioning stimulus is applied to the same electrodes as the gap test. By comparing our results with experiments of similar design carried out on lower animals by other investigators, some insights into the neural localization of the reported effects is obtained. 相似文献
55.
56.
57.
58.
59.
60.
This article reviews the results of survey methodological research that illustrate phenomena of potential interest to investigators of memory, and also reviews psychological research designed to explore some of these phenomena under controlled laboratory conditions. We classify the phenomena reviewed into broad categories of remembering what events occurred, remembering when events occurred, and estimation and reconstruction processes used in reporting recurring events. We delineate the contributions of this research for our understanding of memory phenomena and show where this research has revealed gaps in our existing theories and knowledge. These findings present challenges for future collaboration between cognitive psychologists and survey methodologists. 相似文献