全文获取类型
收费全文 | 49298篇 |
免费 | 1903篇 |
国内免费 | 18篇 |
出版年
2019年 | 517篇 |
2018年 | 777篇 |
2017年 | 706篇 |
2016年 | 821篇 |
2015年 | 596篇 |
2014年 | 736篇 |
2013年 | 4394篇 |
2012年 | 1284篇 |
2011年 | 1268篇 |
2010年 | 849篇 |
2009年 | 793篇 |
2008年 | 1190篇 |
2007年 | 1132篇 |
2006年 | 1040篇 |
2005年 | 925篇 |
2004年 | 860篇 |
2003年 | 851篇 |
2002年 | 851篇 |
2001年 | 1702篇 |
2000年 | 1637篇 |
1999年 | 1236篇 |
1998年 | 522篇 |
1996年 | 615篇 |
1995年 | 581篇 |
1994年 | 576篇 |
1993年 | 533篇 |
1992年 | 1178篇 |
1991年 | 1084篇 |
1990年 | 1088篇 |
1989年 | 944篇 |
1988年 | 934篇 |
1987年 | 919篇 |
1986年 | 906篇 |
1985年 | 887篇 |
1984年 | 802篇 |
1983年 | 660篇 |
1982年 | 522篇 |
1981年 | 525篇 |
1979年 | 744篇 |
1978年 | 573篇 |
1975年 | 690篇 |
1974年 | 709篇 |
1973年 | 778篇 |
1972年 | 716篇 |
1971年 | 654篇 |
1970年 | 569篇 |
1969年 | 576篇 |
1968年 | 711篇 |
1967年 | 617篇 |
1966年 | 576篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
931.
Dissociation of semantic priming, word and non-word repetition effects by event-related potentials 总被引:2,自引:0,他引:2
Michael D. Rugg 《The Quarterly Journal of Experimental Psychology Section A: Human Experimental Psychology》1987,39(1):123-148
Two experiments investigated the modulation of event-related potentials (ERPs) by semantic priming and item repetition. In Experiment 1, subjects silently counted occasional non-words against a background of words, a proportion of which were either semantic associates or repetitions of a preceding word. Compared to control items, ERPs to repeated words were distinguished by an early (ca. 200 msec) transient negative-going deflection and a later, topographically widespread and temporally sustained positive-going shift. In contrast, semantically primed words showed a relatively small, topographically and temporally limited positive-going modulation peaking around 500 msec. These data were interpreted as evidence against models of priming and repetition which postulate similar loci for these effects. In Experiment 2, subjects counted occasional words against a background of non-words, some of which were repeated. ERPs to repetitions showed a similar early ERP modulation to that in Experiment 1, and also displayed a later slow positive shift. This latter effect was smaller in magnitude and had a delayed onset in comparison to Experiment 1. It was concluded that the effects of repetition differ as a consequence of whether, prior to their first presentation, items possess a representation in lexical memory. 相似文献
932.
Anne M. Zieleniewski D. W. Fulker J. C. DeFries Michele C. LaBuda 《Personality and individual differences》1987,8(6)
DeFries and Fulker (1985) employed a multiple regression analysis of twin data in which a cotwin's score is predicted from the proband's score, the coefficient of relationship (R = 1.0 for monozygotic twins and 0.5 for dizygotic twins), and their interaction to yield direct estimates of heritability (h2) and the proportion of variance due to common or shared environmental influences (c2). The purpose of the report is to extend this model to allow for the analysis of data from more than two familial relationships simultaneously. Data from identical twins, fraternal twins, and siblings pairs, in which one member of each pair was selected based on low reading performance, were analyzed. To analyze the data simultaneously, additional coefficients were added to the regression equation in order to differentiate shared environmental influences of twins and siblings. When the model was applied to the combined cognitive data, significant estimates for heritability were obtained in three of the six tests analyzed. The results also indicated a lack of justification for the separate twin and sibling environmental parameters, and a discussion of more parsimonious models is included. 相似文献
933.
The impact of pre-employment integrity testing on employee turnover and inventory shrinkage losses 总被引:1,自引:0,他引:1
Thomas S. Brown Dr. John W. Jones William Terris Brian D. Steffy 《Journal of business and psychology》1987,2(2):136-149
A major home improvement chain located primarily in the western United States initiated the use of thePersonnel Selection Inventory, a written integrity test, as part of its pre-employment hiring process. For two years only, those job applicants who passed this test and other pre-employment criteria were hired by the chain. Following the introduction of the inventory, there was: (1) a 50% reduction in the number of employee terminations for theft, illegal drug use, and violence over a five year period and (2) a savings in shrinkage losses that amounted to over two million dollars over a two year period. 相似文献
934.
Clinical staff’s attributions about diabetes management were measured using newly developed scales. Eighty-five physicians
and nurses provided data to investigate the psychometric properties of the scales and to examine the patterns of attributions
made. Alpha coefficients for the 7 six-item scales were satisfactory, ranging from .51 to .73. A comparison between attributions
for positive and negative outcomes of diabetes management produced examples of self-serving bias. Comparisons were made with
data from 286 insulin-dependent diabetes patients. Staff tended to rate patients as having less personal control over positive
outcomes (t=2.94;df=338;p<.01) and tended to emphasize chance to a greater extent than did the patients (t=−4.32;df=338;p<.001). There was a tendency for staff to rate negative outcomes as being more foreseeable by the patients than the patients
did themselves (t=−3.11;df=346;p<.01). Both patients and staff demonstrated bias towards dispositional attributions. The implications of between and within
group differences in attribution patterns are discussed.
The research presented here was supported in part by grants from the National Institutes of Health, U.S.A. (No. AM28196) and
from the British Diabetic Association to Dr. C. Bradley. 相似文献
935.
936.
937.
938.
Orlando J. Andy M.D. 《Integrative psychological & behavioral science》1987,22(4):132-144
Chronic pain consisting of anesthesia dolorosa secondary to bilateral interruption of the trigeminal nerves is presented as a brain stem reticular denervation syndrome. Electrothalamograms revealed fast frequency discharges in the mesothalamic prerubral and centermedian reticular formation. Mesothalamic electrical stimulation attenuated the discharges. Pain and other symptoms presumably of brainstem origin also were attenuated or abolished by therapeutic electrical stimulation twice daily. It is postulated that brain stem-represented behavioral generators are implicated by the reticular discharges in order to produce the complex symptomatology. Consequently the symptom complex is collectively identified as a brainstem “mini-discharge” syndrome. A theoretical discussion is presented to defend the thesis that reticular denervation-induced low threshold discharge system accounts for the episodic states of pain, dyskinesia, mood, and memory disturbances. 相似文献
939.
940.
Michael Lyvers B.A. Gayle Boyd Ph.D. Irving Maltzman Ph.D. 《Integrative psychological & behavioral science》1987,22(1):7-15
Effects of smoking on spontaneous bilateral skin conductance were studied as a consequence of interactions with set and setting. Bilateral skin conductance was recorded in six men and six women who smoked and an equal number of nonsmokers on two different days. On the first day, spontaneous electrodermal activity was recorded before and after a 10-minute rest period during which half the smokers smoked a cigarette. On the second day, one week later, spontaneous activity was again recorded before and after a 10-minute rest period during which the remaining smokers smoked a cigarette. Nonsmokers did not smoke at any time. Following smoking there was a significant negative correlation between a preference for visual over nonvisual imagery and spontaneous skin conductance responsivity in the left as compared to the right hand. Correlations were significantly different in smokers and nonsmokers. Smokers showed significantly greater preferences for either visual or nonvisual imagery than nonsmokers. Nonresponding nonsmokers were higher on the psychoticism (P) scale of the Eysenck Personality Questionnaire (EPQ) than responding nonsmokers. Smokers scored higher on P than nonsmokers. Interactions between personality, cognitive style, and the experimental situation, set, and setting were discussed in relation to the arousing effects of nicotine. 相似文献