全文获取类型
收费全文 | 2197篇 |
免费 | 124篇 |
出版年
2021年 | 20篇 |
2020年 | 38篇 |
2019年 | 36篇 |
2018年 | 45篇 |
2017年 | 74篇 |
2016年 | 61篇 |
2015年 | 46篇 |
2014年 | 60篇 |
2013年 | 246篇 |
2012年 | 87篇 |
2011年 | 100篇 |
2010年 | 49篇 |
2009年 | 46篇 |
2008年 | 76篇 |
2007年 | 74篇 |
2006年 | 54篇 |
2005年 | 72篇 |
2004年 | 60篇 |
2003年 | 54篇 |
2002年 | 71篇 |
2001年 | 42篇 |
2000年 | 38篇 |
1999年 | 29篇 |
1998年 | 37篇 |
1997年 | 22篇 |
1996年 | 27篇 |
1994年 | 20篇 |
1993年 | 23篇 |
1992年 | 29篇 |
1991年 | 19篇 |
1990年 | 18篇 |
1989年 | 20篇 |
1988年 | 24篇 |
1987年 | 24篇 |
1985年 | 35篇 |
1984年 | 29篇 |
1983年 | 18篇 |
1982年 | 20篇 |
1981年 | 29篇 |
1980年 | 28篇 |
1979年 | 22篇 |
1978年 | 29篇 |
1977年 | 29篇 |
1976年 | 32篇 |
1975年 | 21篇 |
1974年 | 21篇 |
1973年 | 25篇 |
1971年 | 27篇 |
1968年 | 21篇 |
1967年 | 19篇 |
排序方式: 共有2321条查询结果,搜索用时 31 毫秒
31.
One aspect of the comprehension of speech is the assignment of a phonetic representation to the sounds being heard. However, if a person listens to a meaningless syllable that is continually repeated, over time he will hear the syllable undergo a variety of changes. These changes are very systematic in character and represent alterations in the phonetic coding assigned to an unchanging sound stimulus. When the restricted nature of the changes that occur is analyzed phonetically, these changes are found to invlove a reorganization of the phones constituting the syllables and changes in a small number of distinctive features. 相似文献
32.
Two auditory signals were presented in random sequences in which the more intense signal came on.2, .5, or.8a/the trials. Each trial began with an intermediate tone which was identified in the instructions as either the standard for comparison or simply as a warning tone. Half the Os were instructed to discriminate whether the signal was “louder” or “softer” than the standard, the other half to recognize which signal had been presented. For both discrimination and recognition tasks, the total proportion of ldlouder” judgments was independent of the presentation probabilities, accuracy for each signal varying inversely with its probability of presentation. These results suggest strict limitations on the response optimization posited by theories of signal detection. 相似文献
33.
The electromyogram (EMG) recorded with surface electrodes was examined using a triggered oscilloscope technique. When all but the high-amplitude waveforms in a given segment of activity were excluded from analysis, it was found that the duration of the remaining waveforms was specific to the muscle that produced them. That is, waveforms of a given duration were recorded whenever conventional indices-observable contraction, joint movement. needle recordings-showed activity in a specific muscle. This led to the suggestion that waveform duration might be used to validate the surface EMG. The suggestion. which is limited by the need to control posture and electrode placement, both of which may influence waveform duration, was illustrated in application to psychological research. 相似文献
34.
35.
William McDougall and the problem of purpose 总被引:1,自引:0,他引:1
36.
37.
George H. Allen 《Journal of counseling and development : JCD》1967,46(1):59-62
Physically disabled and non-disabled high school seniors' educational and vocational aspiration-expectation discrepancies were compared. No significant differences were found when the two groups were matched for cumulative GPA and level of father's occupation. GPA's and father's job levels of disabled students were significantly lower than those of the non-disabled. When not matched, disabled students' vocational aspiration-expectation discrepancies were significantly higher than those of the non-disabled. Higher aspiration than expectation for the highest vocational and educational levels, professional training, and employment were the major sources of differences expressed by seniors. 相似文献
38.
39.
Allen Parducci Louise M. Marshall Mary Degner 《Attention, perception & psychophysics》1966,1(2):83-86
An adaptation-level model for memory was tested by interpolating different weights between the standard and comparison weights. The results suggest that the model should be modified to account for the general tendency to use alternative categories of judgment with equal frequency. In terms of the modified model, memory for the standard shifts toward the value of the interfering stimulus, the magnitude of shift being proportional to the difference between the interfering stimulus and the value the memory would otherwise have had. 相似文献
40.