全文获取类型
收费全文 | 84049篇 |
免费 | 3402篇 |
国内免费 | 42篇 |
专业分类
87493篇 |
出版年
2020年 | 880篇 |
2019年 | 1094篇 |
2018年 | 1529篇 |
2017年 | 1521篇 |
2016年 | 1647篇 |
2015年 | 1161篇 |
2014年 | 1385篇 |
2013年 | 6736篇 |
2012年 | 2567篇 |
2011年 | 2669篇 |
2010年 | 1637篇 |
2009年 | 1607篇 |
2008年 | 2434篇 |
2007年 | 2406篇 |
2006年 | 2089篇 |
2005年 | 1947篇 |
2004年 | 1876篇 |
2003年 | 1713篇 |
2002年 | 1761篇 |
2001年 | 2688篇 |
2000年 | 2531篇 |
1999年 | 1947篇 |
1998年 | 990篇 |
1997年 | 865篇 |
1996年 | 802篇 |
1993年 | 781篇 |
1992年 | 1690篇 |
1991年 | 1562篇 |
1990年 | 1584篇 |
1989年 | 1391篇 |
1988年 | 1357篇 |
1987年 | 1333篇 |
1986年 | 1375篇 |
1985年 | 1474篇 |
1984年 | 1153篇 |
1983年 | 1035篇 |
1982年 | 773篇 |
1979年 | 1199篇 |
1978年 | 851篇 |
1976年 | 805篇 |
1975年 | 1074篇 |
1974年 | 1161篇 |
1973年 | 1195篇 |
1972年 | 1066篇 |
1971年 | 965篇 |
1970年 | 922篇 |
1969年 | 902篇 |
1968年 | 1174篇 |
1967年 | 1094篇 |
1966年 | 979篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
981.
V J Dark W A Johnston M Myles-Worsley M J Farah 《Journal of experimental psychology. General》1985,114(4):472-497
Subjects performed a visual target-detection task in eight experiments. We examined the effects of word relevancy (word in relevant or irrelevant location) and display load (1-4 words) on physical, semantic, and controlled processing of nontargets. Interwoven with the detection task was a test-word identification task that was used to measure priming potency of nontargets. Physical and semantic levels of processing were measured in terms of identity and semantic priming, respectively. Nontarget primes were repeated as test words in identity priming. Nontarget primes were semantic associates of test words in semantic priming. Controlled processing of nontargets was measured in terms of recognition memory on a subsequent test. All measures increased with word relevancy and decreased with display load. The priming effects remained intact even when word presentation was speeded up and controlled processing was sharply curtailed. The data indicate that all levels of processing are selective and capacity limited. 相似文献
982.
R Kimchi S E Palmer 《Journal of experimental psychology. Human perception and performance》1985,11(6):673-688
We used a constrained classification task to examine the perceptual relations between global and local levels in hierarchical patterns composed of many, relatively small elements and those composed of few, relatively large elements. In Experiments 1 and 3 subjects were asked to make classifications based on "form" or "texture." In Experiments 2 and 4 they were asked to classify according to the "shape" of the configuration or the elements. The results indicate that configural and elemental levels are perceptually separable for many-element patterns when processed as form and texture: Subjects could attend to either level without being affected by variation along the irrelevant dimension. However, when the same many-element patterns were processed for global and local shape, subjects could not selectively attend to either level. For few-element patterns, global configuration and local elements appeared to be perceptually integral dimensions. These results are relevant to two issues: the global precedence hypothesis and the explanations of integral and separable dimensions. 相似文献
983.
J R Sawusch J W Mullennix 《Journal of experimental psychology. Human perception and performance》1985,11(2):242-256
Two alternative conceptualizations of selective adaptation with speech have recently received attention. The adaptation level theory (AL) outlined by Diehl (1981) and a two-stage model outlined by Sawusch and Jusczyk (1981) can both account for much of the adaptation and paired-comparison data. Recently, Diehl, Kluender, and Parker (1985) proposed that all adaptation and contrast data can be accounted for by AL theory. They reported the results of a study that showed evidence of streaming in selective adaptation and claimed that their results provide a counterdemonstration to recent studies that have argued against the AL approach. In the present article, an outline of how the Diehl et al. results can be accounted for by both the two-stage model and AL theory is presented. In addition, a new set of results comparing adaptation and paired-comparison procedures is presented. These results are precisely as predicted by the two-stage model, but they can not be handled by AL theory. 相似文献
984.
How much is an icon worth? 总被引:1,自引:0,他引:1
G R Loftus C A Johnson A P Shimamura 《Journal of experimental psychology. Human perception and performance》1985,11(1):1-13
We report a new technique for assessing the amount of information extracted from the icon that follows a briefly presented picture. The problem of how to measure such information was formulated in terms of how much physical exposure of a picture an icon is worth. Consider two types of stimulus presentations, each with a base duration of d ms. The first is a d-ms picture followed by an icon, and the second is a d + a-ms picture not followed by an icon. How large does a have to be so that equivalent amounts of information are extracted in the two cases? To answer this question, we showed people pictures and later tested their memory for the pictures. We found that the physical exposure duration needed to reach a particular level of performance was approximately 100 ms longer when an icon was not permitted versus when the icon was permitted. This value was independent of the base duration and the luminance of the picture. Moreover, the same value was obtained using three different kinds of memory test and four different sets of pictures. We conclude that an icon is worth approximately 100 ms of additional physical exposure duration. A reasonable explanation for this robust equivalence between icon and stimulus is that the same encoding processes are responsible for extracting information from the icon and from the physical stimulus. Therefore, any variable that affects these encoding processes must affect extraction of information from the icon and the physical stimulus in an identical manner. This prediction was confirmed for one such variable, picture luminance. 相似文献
985.
J D Proctor A F Healy 《Journal of experimental psychology. Human perception and performance》1985,11(3):286-303
In three experiments we examined aspects of the word inferiority effect and word frequency disadvantage for letter detection. In Experiment 1 we tested a prediction derived from a hypothesis based solely on attentional factors. Adult subjects performed one of two secondary detection tasks while reading for comprehension. The inferiority effects were obtained only when the secondary task was letter detection, not when nonletter targets were used in the secondary task. This finding is inconsistent with the attentional hypothesis, but is consistent with the unitization hypothesis of Healy and Drewnowski (1983). In Experiments 2 and 3 we found that manipulation of the need to read for comprehension had little influence on the letter-detection inferiority effects, but a strong influence on the effects involving the detection of nonletter targets. These results are discussed in terms of their implications concerning processing system flexibility. 相似文献
986.
Observers detected a briefly flashed target letter embedded in word, pronounceable nonword, and unpronounceable nonword contexts. The word context facilitated perception under both holistic and analytical processing strategies; the facilitative effect was enhanced when processing was analytical. 相似文献
987.
988.
989.
The purpose of this study was to determine the extent to which stutters manipulate vowel duration to achieve fluency after participating in Precision Fluency Shaping. Nine stutterers who read an all-voiced sentence fluently before and after therapy were selected for study. Wide-band spectrograms were made of the initial phrase of the sentences, and vowel durations were computed. Results indicated that extended vowel durations were characteristic of the fluency of stutterers posttherapy. The subject that had the highest rate of disfluency after therapy also had the shortest vowel durations. Clinical implications concerning the importance of speech rate during carryover practice are made. 相似文献
990.