全文获取类型
收费全文 | 29527篇 |
免费 | 1155篇 |
国内免费 | 15篇 |
专业分类
30697篇 |
出版年
2020年 | 310篇 |
2019年 | 396篇 |
2018年 | 530篇 |
2017年 | 600篇 |
2016年 | 612篇 |
2015年 | 480篇 |
2014年 | 544篇 |
2013年 | 2699篇 |
2012年 | 916篇 |
2011年 | 950篇 |
2010年 | 578篇 |
2009年 | 586篇 |
2008年 | 801篇 |
2007年 | 839篇 |
2006年 | 730篇 |
2005年 | 716篇 |
2004年 | 683篇 |
2003年 | 634篇 |
2002年 | 673篇 |
2001年 | 865篇 |
2000年 | 836篇 |
1999年 | 668篇 |
1998年 | 343篇 |
1997年 | 281篇 |
1996年 | 306篇 |
1995年 | 301篇 |
1992年 | 527篇 |
1991年 | 519篇 |
1990年 | 489篇 |
1989年 | 469篇 |
1988年 | 489篇 |
1987年 | 439篇 |
1986年 | 458篇 |
1985年 | 473篇 |
1984年 | 391篇 |
1983年 | 346篇 |
1981年 | 275篇 |
1979年 | 408篇 |
1978年 | 328篇 |
1977年 | 278篇 |
1975年 | 350篇 |
1974年 | 423篇 |
1973年 | 422篇 |
1972年 | 331篇 |
1971年 | 318篇 |
1970年 | 309篇 |
1969年 | 280篇 |
1968年 | 379篇 |
1967年 | 342篇 |
1966年 | 322篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
951.
C H Vanderwolf B Kolb R K Cooley 《Journal of comparative psychology (Washington, D.C. : 1983)》1978,92(1):156-175
After surgical removal of the neocortex and hippocampal formation, rats retained most of the movement patterns of locomotion, climbing, grooming, feeding, and fighting. However, forepaw immobility during swimming was abolished. Feeding behavior was suppressed temporarily but recovered partially. The distinctive postures of sleep and walking and a circadian rhythm of motor activity were retained. However, behaviors were often not performed at the appropriate time and place. The normal sequence of grooming behavior was disrupted; food hoarding and social behavior were essentially abolished. Removal of the neocortex alone had much the same effect as removal of neocortex and hippocampus together. Removal of hippocampus alone produced only a mild disruption of behavior. It is suggested that ascending nonspecific projections to the cerebral cortex play an important role in the moment-to-moment control of behavior but are not essential for the sleep-waking cycle. 相似文献
952.
Bernardo J Carducci Paul C Cozby Charles D Ward 《Journal of experimental social psychology》1978,14(5):449-457
In an attempt to reconcile conflicting results concerning the effects of sexual arousal on interpersonal evaluations, hypotheses based on adaptation level, arousal-need gratification, and labeling of arousal explanations were tested. The variables of sexual arousal, technique of stimulus material presentation, physical attractiveness of the original stimulus female, and physical attractiveness of the final target person being judged were manipulated in a 2 × 2 × 2 × 2 design. A significant three-way interaction (Arousal × Stimulus Attractiveness × Target Attractiveness) obtained on all measures of interpersonal evaluation was interpreted as supporting a labeling of arousal explanation. It is suggested that subjects first interpret their arousal as being caused by their attraction toward the stimulus person. The characteristics of the stimulus person then become a factor used by subjects when they subsequently make judgments of target females. The adaptation-level and arousal-need gratification hypotheses were not supported. 相似文献
953.
954.
Delayed reinforcement of fixed-ratio performance without mediating exteroceptive conditioned reinforcement 下载免费PDF全文
The performance of pigeons was studied under conditions in which the completion of a fixed-ratio requirement was not contiguous with the presentation of a reinforcer. Timein and timeout periods alternated throughout the experimental sessions. Responses made by an experimental bird during the timein period were accumulated, and when a fixed-ratio requirement had been met, grain was presented to the experimental bird and a yoked control following their first response in the next timein period. Across most manipulations of the fixed-ratio requirement and of the duration of the timeout period, the response rates of the experimental birds were considerably higher than those of their controls, suggesting that the response-reinforcer dependency controlled the behavior of the experimental bird in the absence of a close temporal association between responding on the ratio schedule and reinforcer presentations. 相似文献
955.
956.
957.
MICHAEL BEER ROBERT RUH JACK A. DAWSON B. B. McCAA MICHAEL J. KAVANAGH 《Personnel Psychology》1978,31(3):505-535
The purpose of this paper is to describe and analyze a unique and innovative appraisal and development system. The Performance Management System (PMS) is the formal vehicle used by Corning Glass Works managers to measure and improve the performance and potential for advancement of approximately 3,000 managerial and professional employees. The current design of PMS is the result of several years of research and development work by staff psychologists and personnel specialists at Corning along with applied psychological research conducted in other organizations. PMS is distinguished from most appraisal systems by the following characteristics: (1) Its emphasis on both psychometric accuracy and practical utility; (2) Its emphasis on development as opposed to evaluation; (3) Its use of ipsative measurement; (4) Its integration of results with behavior centered appraisal. This paper is comprised of an introduction, reports on the initial research, the design and introduction, the evaluation and revision of PMS, and an overall summary. The strategies, results, and problems encountered at each phase of PMS development will be described and analyzed. 相似文献
958.
Recall and recognition memory performance of 12 young (M = 19 yr.) and 12 older (M = 72 yr.) females was studied in relation to response delay (5, 25, and 125 sec.) and stimulus complexity (6.1 and 13.7 bits of information). The subjects were matched on verbal IQ, visual acuity, and educational levels. Stimuli were abstract, black and white, 4 X 4 square matrices. Age-related decrements in memory performance were associated with stimulus complexity but not with response delay. Older subjects also reported experiencing encoding difficulties during the registration phase. The results were discussed with reference to the locus of age-related decrements in visual short-term memory. 相似文献
959.
To assess the potential effect of specific and varied practice on the development of motor schema, 64 children in two age groups (8 yr. and 12 yr.) were tested on a simple throwing task at the beginning and end of a 12-wk. physical education program. For the throwing test the children were assigned to either a specificity or a schema group (varied practice). The task was performed without visual feedback, but knowledge of results was given after each trial. Prior to both tests at the criterion target, the specific group was given practice throws using the criterion target distance, whereas the schema group practiced on two other targets. No differences were found between the two groups at the beginning of the program but on the posttest those children receiving a variety of practice on the throwing task performed significantly better than the specific-practice group. Thus it was suggested that a varied practice schedule may facilitate the initial formation of motor schema, and this process may be enhanced by participation in a physical education program. 相似文献
960.