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   60717篇
  免费   2288篇
  国内免费   23篇
  2020年   561篇
  2019年   626篇
  2018年   833篇
  2017年   882篇
  2016年   978篇
  2015年   758篇
  2014年   847篇
  2013年   4224篇
  2012年   1633篇
  2011年   1628篇
  2010年   1042篇
  2009年   1013篇
  2008年   1490篇
  2007年   1421篇
  2006年   1240篇
  2005年   1206篇
  2004年   1134篇
  2003年   1069篇
  2002年   1104篇
  2001年   1810篇
  2000年   1757篇
  1999年   1274篇
  1998年   612篇
  1992年   1241篇
  1991年   1165篇
  1990年   1183篇
  1989年   1082篇
  1988年   1037篇
  1987年   1019篇
  1986年   1071篇
  1985年   1173篇
  1984年   936篇
  1983年   857篇
  1982年   608篇
  1981年   629篇
  1980年   552篇
  1979年   1049篇
  1978年   705篇
  1977年   661篇
  1976年   652篇
  1975年   921篇
  1974年   1055篇
  1973年   1101篇
  1972年   957篇
  1971年   908篇
  1970年   886篇
  1969年   875篇
  1968年   1136篇
  1967年   1050篇
  1966年   952篇
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
991.
992.
993.
The effects of lactate infusion on subjective mood change were studied in two differently instructed groups, in a double-blind, placebo-controlled, cross-over study. Ss who were told that infusions would produce anxiety reported a significant change in the expected direction after lactate but not after glucose. Ss who were told that infusions would produce a state of pleasant excitement showed no change after either infusion. The possible role of cognitive parameters in experimentally-induced anxiety is discussed.  相似文献   
994.
995.
W E Thompson  R A Dodder 《Adolescence》1986,21(82):365-376
All seven variables of containment theory were operationalized for questionnaires. Data were collected from 677 adolescents in a variety of high schools and correctional institutions, and divided into categories by race and sex. Factor analysis indicated that the structure of the relationships among the seven containment variables and delinquency was substantially different among black females.  相似文献   
996.
The prevalence of DSM-III conduct and adjustment disorders in two adolescent psychiatric facilities, both located near large U.S. cities, was investigated. Overall, 31.6% of the adolescent inpatients were conduct disordered while 12.5% were adjustment disordered. The conduct disorders were primarily "aggressive" subtypes suggesting that this characteristic may influence hospitalization and diagnostic decisions. Such data on prevalence assists future treatment planning, allowing anticipation of case loads.  相似文献   
997.
This study measured students' attitudes toward a university's student health services (SHS) and identified factors that were related to their attitudes. A questionnaire surveying students' attitudes was administered to a sample of 150 students at the Oxford Campus of the University of Mississippi. Analysis of the data revealed that students' attitudes had a statistically significant correlation with the following variables: perceived medical care cost, amount of health information/education received during medical encounters, time spent in the waiting room of the SHS, sex of the student, and income of the student. There was no significant relationship between attitude and age.  相似文献   
998.
R L Calabrese  H Schumer 《Adolescence》1986,21(83):675-687
This research evaluated the effects of involvement of adolescents in community service activities on levels of alienation. It was proposed that alienation could be reduced through the implementation of a model which utilized community service activities to facilitate adolescent access to adult society, development of responsibility, collaborative and cooperative work, and control over planning and outcomes. It is suggested that adolescent involvement in service activities can produce positive benefits, among which are reduced levels of alienation, improved school behavior, improved grade point average, and acceptance by the adult community. These findings also suggest that females respond more positively to school when allowed to problem-solve collectively and collaboratively.  相似文献   
999.
Factors associated with juvenile detention truancy   总被引:1,自引:0,他引:1  
Factors influencing truancy from a juvenile court treatment facility were investigated. Youth born in 1962 (N = 124) who were placed in the facility were compared for number of truancies, background, and personality variables. Results showed that males with prior adjudication for home or school truancy had a 65% probability of eloping from the court facility as compared to a 34% probability for youth adjudicated for other offenses. Most females were adjudicated for truancy offenses and showed a 62% probability of truancy while in the court facility. Further, for females who eloped and were returned, the probability of a subsequent truancy was above 80%. Personality characteristics of truants varied with sex: male truants were more likely to be conduct disordered youth for which impulsivity and disregard for social norms is prevalent; female truants appear more likely to be in conflict over autonomy issues.  相似文献   
1000.
Modifications and adjuncts to traditional therapy techniques appear to be necessary for successfully treating hospitalized adolescents with impaired social and verbal skills, and a history of acting-out behavior. Modified therapy groups were combined with a structured biofeedback and cognitive training program to help these adolescents control anger and modify their behavior. Used in conjunction with training and practice in relaxation techniques, this multimodal treatment approach appeared to be helpful in both reducing incidents of acting out on residential units, and in reaching individualized therapeutic goals. The present paper describes use of this multimodal approach within selected residential settings, and outlines the structured materials developed by the authors.  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