全文获取类型
收费全文 | 60646篇 |
免费 | 2378篇 |
国内免费 | 25篇 |
出版年
2019年 | 810篇 |
2018年 | 1063篇 |
2017年 | 1137篇 |
2016年 | 1113篇 |
2015年 | 797篇 |
2014年 | 960篇 |
2013年 | 4614篇 |
2012年 | 1737篇 |
2011年 | 1873篇 |
2010年 | 1181篇 |
2009年 | 1164篇 |
2008年 | 1672篇 |
2007年 | 1596篇 |
2006年 | 1509篇 |
2005年 | 1327篇 |
2004年 | 1254篇 |
2003年 | 1221篇 |
2002年 | 1219篇 |
2001年 | 2006篇 |
2000年 | 1886篇 |
1999年 | 1412篇 |
1998年 | 706篇 |
1997年 | 584篇 |
1996年 | 579篇 |
1992年 | 1176篇 |
1991年 | 1142篇 |
1990年 | 1096篇 |
1989年 | 1057篇 |
1988年 | 1036篇 |
1987年 | 991篇 |
1986年 | 998篇 |
1985年 | 1077篇 |
1984年 | 873篇 |
1983年 | 756篇 |
1982年 | 614篇 |
1981年 | 597篇 |
1979年 | 922篇 |
1978年 | 691篇 |
1977年 | 608篇 |
1976年 | 627篇 |
1975年 | 800篇 |
1974年 | 849篇 |
1973年 | 928篇 |
1972年 | 742篇 |
1971年 | 656篇 |
1970年 | 644篇 |
1969年 | 685篇 |
1968年 | 823篇 |
1967年 | 713篇 |
1966年 | 757篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
951.
R E Remez P E Rubin L C Nygaard W A Howell 《Journal of experimental psychology. Human perception and performance》1987,13(1):40-61
When listeners hear a sinusoidal replica of a sentence, they perceive linguistic properties despite the absence of short-time acoustic components typical of vocal signals. Is this accomplished by a postperceptual strategy that accommodates the anomalous acoustic pattern ad hoc, or is a sinusoidal sentence understood by the ordinary means of speech perception? If listeners treat sinusoidal signals as speech signals however unlike speech they may be, then perception should exhibit the commonplace sensitivity to the dimensions of the originating vocal tract. The present study, employing sinusoidal signals, raised this issue by testing the identification of target /bVt/, or b-vowel-t, syllables occurring in sentences that differed in the range of frequency variation of their component tones. Vowel quality of target syllables was influenced by this acoustic correlate of vocal-tract scale, implying that the perception of these nonvocal signals includes a process of vocal-tract scale, implying that the perception of these nonvocal signals includes a process of vocal-tract normalization. Converging evidence suggests that the perception of sinusoidal vowels depends on the relation among component tones and not on the phonetic likeness of each tone in isolation. The findings support the general claim that sinusoidal replicas of natural speech signals are perceptible phonetically because they preserve time-varying information present in natural signals. 相似文献
952.
Strategies for visual word recognition and orthographical depth: a multilingual comparison 总被引:6,自引:0,他引:6
R Frost L Katz S Bentin 《Journal of experimental psychology. Human perception and performance》1987,13(1):104-115
We investigated the psychological reality of the concept of orthographical depth and its influence on visual word recognition by examining naming performance in Hebrew, English, and Serbo-Croatian. We ran three sets of experiments in which we used native speakers and identical experimental methods in each language. Experiment 1 revealed that the lexical status of the stimulus (high-frequency words, low-frequency words, and nonwords) significantly affected naming in Hebrew (the deepest of the three orthographies). This effect was only moderate in English and nonsignificant in Serbo-Croatian (the shallowest of the three orthographies). Moreover, only in Hebrew did lexical status have similar effects on naming and lexical decision performance. Experiment 2 revealed that semantic priming effects in naming were larger in Hebrew than in English and completely absent in Serbo-Croatian. Experiment 3 revealed that a large proportion of nonlexical tokens (nonwords) in the stimulus list affects naming words in Hebrew and in English, but not in Serbo-Croatian. These results were interpreted as strong support for the orthographical depth hypothesis and suggest, in general, that in shallow orthographies phonology is generated directly from print, whereas in deep orthographies phonology is derived from the internal lexicon. 相似文献
953.
Homicide which occurs in intimate social relationships was studied using data from three Western Canadian cities. Variables which may be related to the relationship and homicide are also examined. Unstable relationships are clearly differentiated from other relationships and are more likely to result in homicide. Implications for future research are discussed. 相似文献
954.
955.
Jeffery S. Schippmann Garry L. Hughes Erich P. Prien 《Journal of business and psychology》1987,1(4):353-366
This article addresses the defensibility of the assessment center based on a content oriented validation strategy. One reason for the confusion in this area is the fact that there are no agreed upon methods for constructing the assessment procedures. Therefore, the purpose of this article is to describe how structured multi-domain job analysis information can be used to develop an assessment center which is well grounded with regard to content validity. 相似文献
956.
Victor S. Alpher Richard L. Blanton Jum C. Nunnally 《Journal of psychopathology and behavioral assessment》1987,9(4):403-421
A series of studies is described demonstrating a coherent exploratory and confirmatory factor-analytic approach to the scaling of self-reported bodily feelings. This approach attempts to optimize the orthogonality, parsimony, and meaningfulness of a multifactor inventory. Psychometric properties of the resulting 35-item Bodily Feeling Scale (BFS) are presented and its comparability with other inventories is discussed. A validity study using item-content-based scales of the Minnesota Multiphasic Personality Inventory showed both concurrent and discriminative validity of the BFS. Implications for clinical and research utility are discussed.Portions of this research were conducted while the first author was supported by a University Graduate Fellowship awarded by the Graduate School of Arts and Sciences at Vanderbilt University.Professor Nunnally passed away in August 1982. His major contributions to the several stages of this research program are recognized through coauthorship. 相似文献
957.
Perceptual organization of acoustic stimuli by budgerigars (Melopsittacus undulatus): II. Vocal signals 总被引:1,自引:0,他引:1
R J Dooling T J Park S D Brown K Okanoya S D Soli 《Journal of comparative psychology (Washington, D.C. : 1983)》1987,101(4):367-381
Operant conditioning and multidimensional scaling procedures were used to study auditory perception of complex sounds in the budgerigar. In a same-different discrimination task, budgerigars learned to discriminate among natural vocal signals. Multidimensional scaling procedures were used to arrange these complex acoustic stimuli in a two-dimensional space reflecting perceptual organization. Results show that budgerigars group vocal stimuli according to functional and acoustical categories. Studies with only contact calls show that birds also make within-category discriminations. The acoustic cues in contact calls most salient to budgerigars appear to be quite complex. There is a suggestion that the sex of the signaler may also be encoded in these calls. The results from budgerigars were compared with the results from humans tested on some of the same sets of complex sounds. 相似文献
958.
959.
Frances Cogle Lawrence Peggy S. Draughn Grace E. Tasker Patricia H. Wozniak 《Sex roles》1987,17(9-10):489-502
A sample of 440 full-time employed couples from 11 states was examined to determine the differences between time spent on housework by husbands and wives in rural and urban areas. More time is spent in housework in rural families than in urban families because time spent in housework is greater for rural women than for urban women, while rural and urban husbands' times do not differ. Education of spouses, job status differentials, and age of the younger child do not significantly interact with rural-urban residence and sex of the spouse. However, family income does significantly influence the relationship between time spent on housework for rural and urban husbands and wives. 相似文献
960.
Robert E. Koslow 《Sex roles》1987,17(9-10):521-527
The ability of males and females to use visual-spatial imagery as a facilitator of symbolic motor skill acquisition was investigated. Subjects, ordered by gender into control and mental imagery groups, performed 15 trials on a mirrored drawing task. The results indicated that, although both male and female mental imagery groups performed the task more skillfully than the control groups, the male mental imagery group scores over the early stages of performance were better as compared to the female mental imagery group scores. This difference was eradicated during the latter stages of performance. The findings, in addition to supporting the positive effects of mental imagery, lend support to the hypothesis that sex-related differences in selected visual-spatial tasks may be amendable through training followed by practice. 相似文献