全文获取类型
收费全文 | 68707篇 |
免费 | 2588篇 |
国内免费 | 26篇 |
专业分类
71321篇 |
出版年
2020年 | 704篇 |
2019年 | 850篇 |
2018年 | 1204篇 |
2017年 | 1225篇 |
2016年 | 1304篇 |
2015年 | 929篇 |
2014年 | 1131篇 |
2013年 | 6038篇 |
2012年 | 1980篇 |
2011年 | 2015篇 |
2010年 | 1310篇 |
2009年 | 1246篇 |
2008年 | 1849篇 |
2007年 | 1781篇 |
2006年 | 1644篇 |
2005年 | 1423篇 |
2004年 | 1353篇 |
2003年 | 1323篇 |
2002年 | 1315篇 |
2001年 | 2101篇 |
2000年 | 2015篇 |
1999年 | 1545篇 |
1998年 | 716篇 |
1996年 | 781篇 |
1995年 | 768篇 |
1994年 | 754篇 |
1993年 | 719篇 |
1992年 | 1464篇 |
1991年 | 1310篇 |
1990年 | 1335篇 |
1989年 | 1194篇 |
1988年 | 1215篇 |
1987年 | 1180篇 |
1986年 | 1190篇 |
1985年 | 1126篇 |
1984年 | 1026篇 |
1983年 | 897篇 |
1982年 | 693篇 |
1979年 | 1060篇 |
1978年 | 770篇 |
1975年 | 908篇 |
1974年 | 931篇 |
1973年 | 1034篇 |
1972年 | 878篇 |
1971年 | 823篇 |
1970年 | 731篇 |
1969年 | 766篇 |
1968年 | 925篇 |
1967年 | 826篇 |
1966年 | 748篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
901.
L G Streetman 《Adolescence》1987,22(86):459-464
The self-esteem of 93 unmarried females between the ages of fourteen and nineteen was measured upon entry into several state-sponsored training programs. Some significant differences were discovered concerning the impact of early motherhood on these individuals. The symbolic importance of motherhood, as a passage into adult status, and the intervening effects of normative group anchorage may mediate between individuals' cognitive ability and their level of self-esteem. 相似文献
902.
Histories of sexual abuse in adolescent male runaways 总被引:3,自引:0,他引:3
In this study, data on sexual victimization in the histories of 89 Canadian male runaways as well as information on physical victimization, family structure, family financial stability, delinquent and criminal activities, and reasons for running away from home were evaluated. The population of male runaways evidenced dramatically higher rates of sexual and physical abuse than did randomly sampled populations. Sexually abused and nonsexually abused male runaways shared characteristics noted in the literature as common to runaways: problem families, high rates of delinquency, depression, tension, low self-image, and history of physical abuse. Sexually abused male runaways differed from nonsexually abused runaways in their reactions to their runaway event, with sexually abused male runaways responding in highly avoidant patterns coupled with extreme withdrawal from all types of interpersonal relationships. These differences are explained as consistent with known sequelae of sexual abuse, and the implications for treatment by runaway shelters and for further research are suggested. 相似文献
903.
904.
Handedness of hypothetically psychosis-prone subjects 总被引:1,自引:0,他引:1
905.
906.
Functional parallelism in spoken word-recognition 总被引:24,自引:0,他引:24
W D Marslen-Wilson 《Cognition》1987,25(1-2):71-102
907.
Productivity and constraints in the acquisition of the passive 总被引:3,自引:0,他引:3
908.
909.
D L Peck 《Adolescence》1987,22(88):863-878
Recently it has been suggested that social-psychological profiles of suicide attempters are useful to identify high-risk persons. There also is evidence that the complexity of interpersonal and intrapersonal factors constrict the extent to which such identification can be made. Using data from a nonprobability sample of 455 adolescent and youthful committers to test the hypothesis that attempters and committers do not differ with respect to environmental and stress-producing factors, the results reveal some differences between committers and attempters. Social-psychological characteristics of committers and factors relating to their social support systems are also discussed in the context of these differences. 相似文献
910.
Work values and key influencers of a sample of black male and female adolescents were examined. Results indicated that boys and girls valued both the intrinsic and extrinsic rewards of work; however, girls reported slighter stronger extrinsic values than did boys. In addition, the sexes reported differences in the importance of specific work values such as "making lots of money," and "doing important things." When naming a key influencer, respondents tended to cite a same-sex and race individual. Sex of one's key influencer was related to certain work values, with subjects reporting a male key influencer valuing "trying out one's own ideas" and "having a secure future" more than those reporting a female key influencer. The interaction of sex of subject and sex of key influencer was significant on one of the work value outcomes. Implications of these findings are considered. 相似文献