全文获取类型
收费全文 | 49249篇 |
免费 | 1865篇 |
国内免费 | 19篇 |
专业分类
51133篇 |
出版年
2020年 | 572篇 |
2019年 | 633篇 |
2018年 | 939篇 |
2017年 | 876篇 |
2016年 | 1005篇 |
2015年 | 698篇 |
2014年 | 879篇 |
2013年 | 4835篇 |
2012年 | 1512篇 |
2011年 | 1496篇 |
2010年 | 1027篇 |
2009年 | 1020篇 |
2008年 | 1480篇 |
2007年 | 1377篇 |
2006年 | 1233篇 |
2005年 | 1057篇 |
2004年 | 1058篇 |
2003年 | 1045篇 |
2002年 | 998篇 |
2001年 | 1383篇 |
2000年 | 1360篇 |
1999年 | 1060篇 |
1998年 | 563篇 |
1997年 | 496篇 |
1996年 | 598篇 |
1995年 | 603篇 |
1994年 | 583篇 |
1993年 | 553篇 |
1992年 | 1010篇 |
1991年 | 906篇 |
1990年 | 922篇 |
1989年 | 814篇 |
1988年 | 817篇 |
1987年 | 801篇 |
1986年 | 780篇 |
1985年 | 777篇 |
1984年 | 723篇 |
1983年 | 596篇 |
1982年 | 486篇 |
1981年 | 518篇 |
1980年 | 474篇 |
1979年 | 683篇 |
1978年 | 528篇 |
1976年 | 482篇 |
1975年 | 595篇 |
1974年 | 609篇 |
1973年 | 649篇 |
1972年 | 602篇 |
1971年 | 542篇 |
1968年 | 557篇 |
排序方式: 共有10000条查询结果,搜索用时 7 毫秒
151.
The Family System Functioning (FSF) scale is a new instrument for measuring dimensions of the intrafamilial environment thought to be important in recovery from major psychiatric illness. Modest statistical correlations were obtained when FSF ratings of laboratory-based family interactions were compared with researcher-guided therapist ratings of FSF based upon the family's behavior in family therapy sessions during the subsequent month. The data from these two settings provide support for the validity of some of the scales. Because of the modest size of the correlations, however, behavior in the laboratory setting may not always be an accurate indicator of how the family will behave in the early weeks of family therapy. 相似文献
152.
T D Crespi 《Adolescence》1988,23(92):805-811
The effectiveness of a time-out intervention for adolescent psychiatric patients, adjudicated (delinquent) youth, and behaviorally disordered youngsters was explored in this study. The research was conducted in three psychiatric hospitals for children and adolescents, a facility for adjudicated youth, and in a day-treatment program. Utilizing a comparative outcome model, 813 occurrences of time-out with 274 youth were investigated in order to assess levels of effectiveness. The results indicated that time-out had a significant impact, and the use of a child-care specialist as time-out monitor improves overall effectiveness. Important implications for practicing professionals and clinical researchers are noted. 相似文献
153.
154.
155.
156.
Context and structure in conceptual combination 总被引:8,自引:0,他引:8
157.
Two modes of learning for interactive tasks 总被引:5,自引:0,他引:5
158.
Perlin E 《Journal of religion and health》1988,27(4):279-284
The care of the patient with cancer requires the development not only of a medical plan, but an ethical plan as well. This plan should integrate the physician's and the patient's perceptions of medical and ethical propriety. Jewish biomedical ethical principles are based on the teaching of the Old Testament and its various interpretations. In this paper, I discuss how these principles can be used to help guide the physician caring for the patient with cancer. Other ethical systems could be applied in a similar fashion. 相似文献
159.
Wolfgang Hell Gerd Gigerenzer Siegfried Gauggel Maria Mall Michael Müller 《Memory & cognition》1988,16(6):533-538
If subjects are asked to recollect a former response after having been informed about the correct response, their recollection tends to approach the correct response. This effect has been termedhindsight bias. We studied hindsight bias in an experiment requiring numerical responses to almanac-type questions for physical quantities. We varied (1) the time at which the correct information was provided, (2) the encoding of the original responses by asking/not asking subjects to give a reason for the respective response, and (3) the motivation to recall correctly. We found that hindsight is less biased if reasons are given and if the correct information is provided at an earlier time. Motivation had only interactive effects: (1) With high motivation to recall correctly, the time the correct information was provided had no influence. (2) With reasons given, the variation of motivation showed no effect. These results rule out purely motivational and purely automatic explanations. 相似文献
160.