全文获取类型
收费全文 | 2975篇 |
免费 | 116篇 |
国内免费 | 1篇 |
出版年
2020年 | 51篇 |
2019年 | 71篇 |
2018年 | 71篇 |
2017年 | 81篇 |
2016年 | 79篇 |
2015年 | 52篇 |
2014年 | 66篇 |
2013年 | 353篇 |
2012年 | 127篇 |
2011年 | 137篇 |
2010年 | 91篇 |
2009年 | 74篇 |
2008年 | 114篇 |
2007年 | 111篇 |
2006年 | 110篇 |
2005年 | 88篇 |
2004年 | 83篇 |
2003年 | 84篇 |
2002年 | 95篇 |
2001年 | 63篇 |
2000年 | 54篇 |
1999年 | 52篇 |
1998年 | 49篇 |
1997年 | 28篇 |
1996年 | 46篇 |
1995年 | 29篇 |
1994年 | 28篇 |
1993年 | 31篇 |
1992年 | 46篇 |
1991年 | 36篇 |
1990年 | 29篇 |
1989年 | 29篇 |
1988年 | 27篇 |
1987年 | 25篇 |
1986年 | 29篇 |
1985年 | 27篇 |
1984年 | 33篇 |
1983年 | 25篇 |
1982年 | 24篇 |
1981年 | 29篇 |
1980年 | 35篇 |
1978年 | 29篇 |
1977年 | 20篇 |
1976年 | 22篇 |
1975年 | 22篇 |
1974年 | 22篇 |
1973年 | 22篇 |
1972年 | 20篇 |
1968年 | 24篇 |
1966年 | 20篇 |
排序方式: 共有3092条查询结果,搜索用时 15 毫秒
11.
The intent of this study is to apply a cross-level design to examine the influence of contextual factors upon individuals' performance. The results support the hypothesis that peer group characteristics predict individual performance beyond individual characteristics. The implications for using a cross-level approach to study the effects of contextual variables on individual-level phenomena are discussed. 相似文献
12.
This study investigated the relationship between intergenerational family relationships and Frankl's concept of meaning in life. Intergenerational family relationships were measured by the Personal Authority in the Family System Questionnaire (PAFS-QE) by Bray, Williamson, and Malone. The meaning in life variables were measured by the Life Attitude Profile-Revised (LAP-R) by Reker. This quantitative study, using the BMDP Statistical Package (Dixon, 1990), correlated the scores on various subscales from both instruments, resulting in seven statistically significant relationships. The findings, although modest, suggest the existence of a relationship between these two theoretical areas.This article is based in part on the first author's doctoral dissertation at Texas Woman's University.A copy of the PAFS-Q may be obtained from: James H. Bray, PhD, 5510 Greenbriar, Houston, TX 77005. A copy of the LAP-R may be obtained from: Gary Reker, PhD, Trent University, Psychology Department, Peterborough, Ontario Canada K9J 7B8. 相似文献
13.
A MOTIVATIONAL ANALYSIS OF EMOTION: Reflex-Cortex Connections 总被引:1,自引:0,他引:1
14.
Kevin Anderson 《Studies in East European Thought》1992,44(2):79-129
I would like to thank the following people for helpful comments and criticisms: Janet Afary, Paul Buhle, Bud Burkhard, Olga Domanski, Nigel Gibson, Peter Hudis, Martin Jay, Douglas Kellner, Andrew Kliman, Pierre Lantz, Heinz Osterle, Jim Thomas, Lou Turner, and Alan Wald. 相似文献
15.
H D Kimmel W D Kearns D E Anderson 《Integrative Physiological and Behavioral Science》1992,27(4):356-370
Two dogs received a single paired classical conditioning trial, with tone CS and 12 mA shock US. Both dogs then showed a conditioned blood pressure increase in response to the nonreinforced CS, which extinguished with additional nonreinforced presentations. The CR showed spontaneous recovery four days later, but reextinguished with additional nonreinforced presentations. The results were interpreted as not supporting Eysenck's theory of "incubation" following one-trial aversive conditioning. 相似文献
16.
Jamie Israel Margaret Cunningham Helen Thumann Kathleen Shaver Arnos 《Journal of genetic counseling》1992,1(2):135-153
It has been estimated that at least 50% of congenital or early onset deafness loss has a genetic etiology. Genetic services have traditionally been utilized by hearing parents of deaf children. Deaf adults could also greatly benefit from genetic counseling services. However, many deaf adults do not seek genetic services due in part to the communication/language and cultural differences of this group. Deaf people communicate in various ways including the use of sign language, oral communication, writing, or a combination of these modes. Also, while some deaf individuals are part of the hearing culture, others are part of the Deaf culture which has its own language, values, and traditions. Culturally Deaf individuals do not see themselves as handicapped or disabled. The genetic professional's awareness of the communication/language and cultural needs of this group, as well as their agency's responsibilities under section 504 of the Rehabilitation Act of 1973, may increase the accessibility of genetic services and contribute to the provision of successful genetic counseling for deaf adults.Throughout this paper, the term deaf will be used to denote a person who audiologically has a hearing loss which may range from mild to profound and may be sensorineural, conductive, or mixed. However, the term Deaf is used to denote cultural deafness. 相似文献
17.
A tether system has been developed for continuous monitoring of blood pressure in the micropig. The micropig is a suitable model for blood-pressure research because of the similarity of its cardiovascular system to that of humans and because of its sensitivity to high sodium intake. The system consists of a metal boom, attached via a universal joint to a wall 6 ft above floor level, that extends horizontally to the center of the enclosure. A fluid and electronic swivel affixed to the boom is connected to a flexible, hollow, metal tether that descends to a vest worn by the micropig. The vest contains a pressure transducer to which an indwelling arterial catheter is connected via a stopcock. The transducer cable and an infusion line ascend through the interior of the tether to the swivel. The system remains in equilibrium through a system of pulleys and counterweights. Continuous, 24-h recording shows a diurnal variation characterized by higher heart rate but lower blood pressure during the day than at night. The system has been found to be effective for continuous studies over intervals of a month or more. 相似文献
18.
Variation of amplitude envelope at stimulus onset has been considered to be of primary importance for distinguishing voiceless affricates from fricatives (e.g., |t∫| and |∫|). In earlier perceptual experiments, however, variation in amplitude rise time was confounded with variation in frication duration. In two experiments, these variables were independently manipulated, and their individual and combined effects for perception of |t∫| and |∫| were examined. Variation in amplitude rise time alone was not sufficient to signal the voiceless affricate/fricative contrast in these experiments, but variation in frication duration alone was sufficient. 相似文献
19.
20.
Dee Burton Steve Sussman William B. Hansen C. Anderson Johnson Brian R. Flay 《Journal of applied social psychology》1989,19(8):656-664
Previous research has indicated that adolescents who intend to smoke differ from those who do not intend to smoke in the imagery they associate with smoking. The present study examined relationships among self-image, ideal self-image, image of smokers in general and image of models in cigarette ads for seventh-grade students. The strongest finding was a positive correspondence of smokers image to self-image in predicting intention to smoke cigarettes. This correspondence between smokers image and self-image derived from a relative depression of self-image in combination with a relative elevation of smokers image for youth who were more likely to report intentions to smoke. There was also a trend for the ideal self-image of youth with greater intentions to smoke to be similarly depressed. It is suggested that when both self-concept and aspirations for self-improvement are diminished, smoking may seem particularly desirable as a means of enhancing identity. 相似文献