全文获取类型
收费全文 | 24950篇 |
免费 | 991篇 |
国内免费 | 13篇 |
出版年
2020年 | 235篇 |
2019年 | 324篇 |
2018年 | 456篇 |
2017年 | 475篇 |
2016年 | 500篇 |
2015年 | 384篇 |
2014年 | 429篇 |
2013年 | 2100篇 |
2012年 | 731篇 |
2011年 | 761篇 |
2010年 | 459篇 |
2009年 | 446篇 |
2008年 | 606篇 |
2007年 | 647篇 |
2006年 | 566篇 |
2005年 | 530篇 |
2004年 | 495篇 |
2003年 | 493篇 |
2002年 | 536篇 |
2001年 | 821篇 |
2000年 | 778篇 |
1999年 | 594篇 |
1998年 | 251篇 |
1996年 | 259篇 |
1995年 | 235篇 |
1992年 | 491篇 |
1991年 | 486篇 |
1990年 | 468篇 |
1989年 | 442篇 |
1988年 | 453篇 |
1987年 | 409篇 |
1986年 | 427篇 |
1985年 | 426篇 |
1984年 | 344篇 |
1983年 | 304篇 |
1982年 | 239篇 |
1981年 | 233篇 |
1979年 | 385篇 |
1978年 | 282篇 |
1977年 | 232篇 |
1975年 | 309篇 |
1974年 | 382篇 |
1973年 | 392篇 |
1972年 | 315篇 |
1971年 | 304篇 |
1970年 | 319篇 |
1969年 | 272篇 |
1968年 | 378篇 |
1967年 | 343篇 |
1966年 | 311篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
962.
963.
In an evaluative study of brief family therapy, 279 families were administered a Family Satisfaction Questionnaire in their own homes, six months after treatment terminated. This questionnaire was designed to assess several aspects of the families' satisfaction with services received. The identified patient in all families was a child with academic and/or behavioral problems at school. A variety of outcome measures were also obtained both at treatment termination and at the six-month follow-up. Families were generally satisfied with the overall services received but expressed widely varying degrees of satisfaction with various aspects of treatment. Very little dissatisfaction was expressed regarding the availability of services (less than 7 per cent), but a sizeable proportion of families (45 per cent) did not feel that the services provided were comprehensive and adequate. Despite concerns regarding comprehensiveness and adequacy of the service, the majority of families were functioning well at the time of follow-up as assessed by a number of independent measures. Global satisfaction should not be regarded as the only index of treatment effectiveness, as many families who were dissatisfied experienced successful treatment outcomes. 相似文献
964.
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
965.
966.
Delayed reinforcement of fixed-ratio performance without mediating exteroceptive conditioned reinforcement
下载免费PDF全文
![点击此处可从《Journal of the experimental analysis of behavior》网站下载免费的PDF全文](/ch/ext_images/free.gif)
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
967.
Pranayama is a Yogic breathing practice which is known experientially to produce a profound calming effect on the mind. In an experiment designed to determine whether the mental effects of this practice were accompanied by changes in the arterial blood gases, arterial blood was drawn from 10 trained individuals prior to and immediately after Pranayama practice. No significance changes in arterial blood gases were noted after Pranayama. A neural mechanism for the mental effects of this practice is proposed. 相似文献
968.
969.
970.
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