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   64282篇
  免费   2459篇
  国内免费   30篇
  2020年   681篇
  2019年   889篇
  2018年   1202篇
  2017年   1318篇
  2016年   1278篇
  2015年   921篇
  2014年   1090篇
  2013年   5053篇
  2012年   1963篇
  2011年   2069篇
  2010年   1336篇
  2009年   1313篇
  2008年   1866篇
  2007年   1832篇
  2006年   1654篇
  2005年   1445篇
  2004年   1348篇
  2003年   1345篇
  2002年   1297篇
  2001年   2107篇
  2000年   2039篇
  1999年   1549篇
  1998年   696篇
  1997年   633篇
  1996年   605篇
  1994年   606篇
  1992年   1309篇
  1991年   1204篇
  1990年   1223篇
  1989年   1108篇
  1988年   1108篇
  1987年   1069篇
  1986年   1061篇
  1985年   1068篇
  1984年   906篇
  1983年   792篇
  1982年   603篇
  1979年   958篇
  1978年   702篇
  1977年   631篇
  1975年   797篇
  1974年   852篇
  1973年   939篇
  1972年   741篇
  1971年   669篇
  1970年   620篇
  1969年   690篇
  1968年   793篇
  1967年   717篇
  1966年   705篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
942.
B E Robinson  R L Barret 《Adolescence》1987,22(87):611-616
This study examines the relationship between the age of unmarried fathers and their self-concept and anxiety level. A total of 24 unmarried fathers (12 adolescents and 12 adults) comprised the sample. No significant differences were found between adolescent and adult fathers on self-concept or anxiety level. Findings are discussed with regard to the current status of research on adolescent fathers.  相似文献   
943.
944.
945.
946.
947.
Age differences in memory for item and source information   总被引:1,自引:0,他引:1  
  相似文献   
948.
The Hispanic Treatment Program was an inpatient psychotherapy Unit at the Colorado State Hospital that operated from October 1979 to February 1982. Staffed exclusively with personnel of Hispanic heritage, the Program emphasized the use of linguistic and cultural elements, as well as the customs and beliefs characteristic of Hispanic culture. A specialized inpatient treatment unit for Hispanic patients with psychotic (especially, schizophrenia) disturbances, the Program offered a unique opportunity to these patients by providing a variety of psychotherapies conducted in a culturally-sensitive manner. Spanish and English were used in a manner conducive to enhancing the treatment process, with flexibility in use of language.This project was supported by Grant No. ROlMH29016-01A2, awarded by the National Institute of Mental Health, Center for Minority Group Mental Health.The authors acknowledge Gregorio Kort, M.D. and Wayne Smyer, M.A. and other staff for their contributions to the development and success of the Hispanic Treatment Program.Original version of paper was selected for the First Senior Award given by the Psychological Services Center's (NYSCP) Minority Mental Health Award Competition.  相似文献   
949.
Two studies found that left-handed children had significantly poorer academic records than did right-handed children, though the effect was small. Study 1 provided evidence that, for some academic disciplines, the important difference appeared to be between those children whose family history of handedness was concordant with their own handedness and those children whose family history of handedness was discordant with their own handedness. The inclusion of gender in asymmetry research was bolstered by Study 2. When predicting idiosyncrasies in left-handers' cognitive performance, it should be borne in mind that left-handers form a minority group as well as a neurologically distinct one.  相似文献   
950.
To investigate the role of perception and stress on time concepts, the real-time and apparent durations of common events varying in length from 30 s to 4 years were rated by kindergarten through 12th-grade pupils, college students, professors, and stress-impaired adults (N = 1,788). The events were pleasant, neutral or unpleasant; either directly perceptible and of specific duration or perceptually vague; and happened either to oneself or to someone else. Second graders differentiated apparent from real-time durations and, therefore, already had an abstract concept of time. As predicted from differentiation theory (Gibson, E. J., 1969; Gibson, J. J., 1966, 1983), longer durations were acquired later than shorter ones; perceptually-vague durations were acquired later than clearly perceptible ones of similar length; and, as Neisser (1976) also suggested, stress did not lead to regression, nor did the personal-impersonal dimension make a difference during childhood.  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