首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   42840篇
  免费   745篇
  国内免费   6篇
  43591篇
  2020年   452篇
  2019年   582篇
  2018年   756篇
  2017年   751篇
  2016年   872篇
  2015年   607篇
  2014年   728篇
  2013年   3565篇
  2012年   1335篇
  2011年   1365篇
  2010年   866篇
  2009年   915篇
  2008年   1192篇
  2007年   1236篇
  2006年   1143篇
  2005年   995篇
  2004年   958篇
  2003年   929篇
  2002年   957篇
  2001年   1203篇
  2000年   1221篇
  1999年   932篇
  1998年   501篇
  1997年   460篇
  1996年   442篇
  1995年   457篇
  1994年   430篇
  1993年   415篇
  1992年   771篇
  1991年   717篇
  1990年   672篇
  1989年   661篇
  1988年   645篇
  1987年   607篇
  1986年   603篇
  1985年   662篇
  1984年   581篇
  1983年   545篇
  1982年   470篇
  1981年   420篇
  1980年   415篇
  1979年   597篇
  1978年   487篇
  1977年   457篇
  1976年   460篇
  1975年   506篇
  1974年   578篇
  1973年   598篇
  1972年   504篇
  1968年   484篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
41.
42.
The authors discuss the application of Gestalt theory as a means of dealing with the surviving classmates of a student who committed suicide.  相似文献   
43.
A technical issue in auditory spatial attention research is how best to provide low-cost, accurate control of the frequency, duration, and location of acoustic signals. Three solutions to the problem are compared: use of the internal oscillator of the Apple lIe, use of a Mountain A/D+D/A card, and use of an external oscillator chip. The unique advantages and drawbacks of each system are discussed. All share some common problems of external speaker interface, timing control, and interface with the software. Hardware and software solutions implemented on the Apple-Psych system are discussed, along with data that demonstrate the precision control achieved with the system.  相似文献   
44.
45.
Using the metaphor of ecumenism, the current status of psychoanalysis and the American Psychoanalytic Association is examined. The dialectical tendencies to oppose and to unify are noted in psychoanalytic theory, technique, and practice, as well as in the administrative and political life of our organization. Fostering tolerance for new hypotheses without sacrificing empirical discrimination, and promoting broad participation without lowering standards confront us as major tasks demanding continuing vigilance and effort.  相似文献   
46.
Seventh-grade students and teachers from twenty-three middle and junior high schools were surveyed to determine the association between teacher attitudes, behavioral intentions, and smoking behavior and the prevalence of student smoking. Teacher attitudes toward smoking policies were found to be strongly related to the current smoking behavior of the teacher but not consistently related to student smoking. In addition, teacher likelihood of intervening showed a modest association with teacher smoking status, with current smokers generally indicating being the least likely to intervene for student possession or use of cigarettes. Teacher intentions to intervene were strongly associated with the prevalence of smoking among boys but not girls.  相似文献   
47.
The present study attempted to delineate factors that are associated with and may contribute to juvenile delinquency. Delinquents were compared to a matched control group of nonoffenders on a measure of mental health problems. Twenty-four male and female incarcerated juvenile offenders and 24 nonoffending adolescents were evaluated on the Revised Behavior Problem Checklist (RBPC). As expected, the offenders scored higher (an indication of more psychopathology) on the subscales of the RBPC which represent externalizing types of problems. The offenders also scored significantly higher on the subscales reflecting internalizing problems and psychotic behavior. The results of this study point to the importance of assessing and treating offenders, especially those who are incarcerated, for difficulties other than externalizing problems.  相似文献   
48.
We investigated in a sample of 75 medical students the hypothesis that higher levels of self-criticism, a major vulnerability factor for depression, are related to retrospective reports of less satisfactory parenting, even when the potentially confounding factors of mood state and social desirability response set are controlled. At each of 2 measurement times, there were significant cross-sectional correlations between parental ratings and both depression and self-criticism, but the associations with self-criticism were no longer significant when depression was controlled. However, even after controlling for the effects of mood state and social desirability, persons with high levels of self-criticism at both measurement points (high trait self-criticism subjects) reported significantly worse relationships with their mothers than did the remaining subjects. They were also more likely to report below average relationships with both parents jointly.  相似文献   
49.
Effortful and automatic memory task performances were examined in 36 schizophrenic patients and 18 normal control Ss. Tasks included free recall, recognition, and frequency estimation. Patients demonstrated impairment in recall, in recognition, in semantic encoding, and in frequency estimation. Deficits were observed across tasks despite differences in attentional demands. The results suggest a basic compromise of memory function, which is consistent with recent neuroimaging evidence of structural or physiological abnormalities in frontal and temporal lobe structures in schizophrenia.  相似文献   
50.
This article examines and clarifies controversies about the concept of illness in the field of family therapy. We contend that illness, as traditionally understood in all cultures, is a relational, transactional concept that is highly congruent with core principles of present-day family theories. Family therapists need not buy into a biotechnical, reductionistic reframing of illness as disease. Rather, it is more appropriate to conceptualize and work with illness as a narrative placed in a biopsychosocial context. Such a narrative includes how shared responsibility for coping and for finding solutions can take place, without becoming involved in disputes about causal models.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号