全文获取类型
收费全文 | 105951篇 |
免费 | 2026篇 |
国内免费 | 5篇 |
专业分类
107982篇 |
出版年
2020年 | 1125篇 |
2019年 | 1397篇 |
2018年 | 1892篇 |
2017年 | 1962篇 |
2016年 | 2079篇 |
2015年 | 1506篇 |
2014年 | 1777篇 |
2013年 | 8379篇 |
2012年 | 3305篇 |
2011年 | 3433篇 |
2010年 | 2141篇 |
2009年 | 2134篇 |
2008年 | 2986篇 |
2007年 | 2995篇 |
2006年 | 2737篇 |
2005年 | 2379篇 |
2004年 | 2294篇 |
2003年 | 2189篇 |
2002年 | 2221篇 |
2001年 | 3309篇 |
2000年 | 3166篇 |
1999年 | 2392篇 |
1998年 | 1194篇 |
1997年 | 1059篇 |
1996年 | 1090篇 |
1995年 | 994篇 |
1993年 | 975篇 |
1992年 | 2003篇 |
1991年 | 1882篇 |
1990年 | 1884篇 |
1989年 | 1742篇 |
1988年 | 1694篇 |
1987年 | 1612篇 |
1986年 | 1652篇 |
1985年 | 1710篇 |
1984年 | 1451篇 |
1983年 | 1297篇 |
1982年 | 951篇 |
1979年 | 1526篇 |
1978年 | 1118篇 |
1975年 | 1230篇 |
1974年 | 1360篇 |
1973年 | 1470篇 |
1972年 | 1222篇 |
1971年 | 1151篇 |
1970年 | 1024篇 |
1969年 | 1039篇 |
1968年 | 1307篇 |
1967年 | 1176篇 |
1966年 | 1063篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
261.
D H Foster M Ferraro 《Journal of experimental psychology. Human perception and performance》1989,15(4):771-784
Visual processing was investigated in judgments of relative line position. Stimulus continua were generated by bisecting a straight line and displacing the segments. Experiment 1 measured discrimination of pairs of longitudinally displaced segments at equal steps along the continuum. At long (2 s) durations discrimination fell smoothly, but at short (100 ms) durations it was sharp-peaked. In Experiment 2 the short-duration stimuli were labeled with subsets of the labels no gap, just a gap, and more than just a gap. Theoretical discrimination performances were computed and the one based on no gap and just a gap closely fitted observed performance. Experiments 3 and 4 were similar to 1 and 2, with lateral replacing longitudinal displacement. Similar "categorical" performance was obtained. It was concluded that there are discrete mechanisms for early detection of relative line position and that 2 labels can be used to characterize performance in each direction. 相似文献
262.
VIRGINIA M. SPIEGEL 《Counseling and values》1989,34(1):51-56
In this article the author reports results from a national survey of recovering alcoholic Catholic Sisters, describing their addiction history, treatment, and the role of the community. 相似文献
263.
264.
This field study used the Job Feedback Survey (Herold & Parsons, 1985) and performance data gathered from multiple sources to examine the relationship between the perceived organizational feedback environment and performance. Regression analyses indicated that, while holding the other feedback variables constant, feedback from supervisory and organizational sources was related to reported job performance while feedback from peers and self was not. Most of the unique variance in performance explained by feedback was also accounted for by feedback from organizational and supervisory sources. Negative expressions from organizational/supervisory sources (e.g., the supervisor expressing anger, the company communicating dissatisfaction with poor performance) were related to lower performance, and positive job changes initiated by these sources (e.g., increasing responsibility, assignment to special jobs) were related to higher performance. Higher performers did not receive more feedback than lower performers but did receive more total positive feedback. Supplemental issues, possible explanations, and implications of the findings are discussed. 相似文献
265.
The responses toward denatonium saccharide and quinine by three rodent species differ from those exhibited by humans. This study measured the relative aversiveness of these two compounds in grasshopper mice (Onychomys leucogaster) to determine if this species responded similarly to or differently from these other rodents. In a choice test, the mice clearly preferred quinine over denatonium saccharide at concentrations of 1/10,000 and 1/50,000, but only marginally preferred quinine at a concentration of 1/1000. When denatonium or quinine was paired with toxicosis, both suppressed drinking at concentrations from 1/10,000 to 1/50,000, but only denatonium suppressed drinking at 1/100,000. Neither compound suppressed drinking at 1 part in million. Grasshopper mice perceived denatonium saccharide as more aversive than quinine in both experiments. Such a response resembled the behavior of humans more than that of the other three rodents previously tested. 相似文献
266.
This study compared normal developing children, aged 34 to 51 mo., on comprehension and production of relative dimensional adjectives using object manipulations in a close elicitation procedure and on Piagetian operational tests of conservation of continuous quantity, length, reversibility and seriation. Analysis indicated a significant difference on the expressive language performance of the transitional and the concrete operational children over the preoperational children, but no significant differences occurred between the first two groups. Children who performed better on seriation were significantly better on expressive language performance. Children classified as operational for length performed better on all language measures than those classified as nonoperational. Reversibility and conservation of a continuous quantity did not differentiate children. 相似文献
267.
268.
This study examined job bias associated with business students' role-playing as sales managers who assigned trainees to sales territories. Personal characteristics of being extremely overweight and being a heavy smoker were studied. Research participants were given a personnel record (training record) of a sales trainee and asked to make a sales territory assignment decision; three vacant territories were also described. The participants were told to assign the trainee to one of the territories or to indicate a preference to not have the recruit assigned to any territory within the role-playing manager's region. Analysis indicates that a sales recruit described as extremely overweight was less likely to be assigned to an important or desirable sales territory and more likely to be assigned to an undesirable territory or not selected at all for an assignment within a sales region. Those described as heavy smokers were similarly treated but to a lesser degree. Overweight saleswomen were discriminated against more than overweight salesmen. 相似文献
269.
The technique of Free Visual Imagery Sequences was used with 32 outpatients, M age of 33.9, to determine the differences between Visual Imagery Reactors and Nonreactors as defined in previous studies. Reactors showed significantly more responses associated with Affect/Conflict material, frequently including bizarre and distorted images. The Affect/Conflict responses occurred earlier and had longer duration spans in Reactors. Neutral content was more prevalent in Nonreactors. An interpretive approach involving a regulatory processing system is proposed. Free Visual Imagery Sequences appears to be a simple and efficient clinical technique which can contribute data useful in determining the extent to which imagery techniques could be employed in certain forms of psychotherapy. 相似文献
270.
J B Murray 《Psychological reports》1989,64(2):627-644
Alcoholism among women often has been treated using a model based on research with alcoholic men. Women react differently to alcohol than men both physiologically and psychologically and their drinking patterns are different from men's. Treatment facilities for alcoholism have not been as available for women as for men and treatment must be individualized for the differences between men and women problem drinkers and for the differences among alcoholic women. 相似文献