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   55470篇
  免费   2190篇
  国内免费   16篇
  57676篇
  2019年   652篇
  2018年   883篇
  2017年   931篇
  2016年   941篇
  2015年   662篇
  2014年   850篇
  2013年   4063篇
  2012年   1518篇
  2011年   1615篇
  2010年   1023篇
  2009年   972篇
  2008年   1492篇
  2007年   1407篇
  2006年   1331篇
  2005年   1176篇
  2004年   1194篇
  2003年   1097篇
  2002年   1150篇
  2001年   1577篇
  2000年   1486篇
  1999年   1163篇
  1998年   621篇
  1997年   585篇
  1996年   562篇
  1992年   995篇
  1991年   947篇
  1990年   921篇
  1989年   919篇
  1988年   925篇
  1987年   866篇
  1986年   918篇
  1985年   960篇
  1984年   794篇
  1983年   727篇
  1982年   587篇
  1981年   586篇
  1979年   898篇
  1978年   679篇
  1977年   575篇
  1976年   629篇
  1975年   737篇
  1974年   870篇
  1973年   929篇
  1972年   724篇
  1971年   711篇
  1970年   685篇
  1969年   721篇
  1968年   864篇
  1967年   775篇
  1966年   781篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
151.
A typology of five bases of social power developed by French and Raven (1959) has been used to study small-group behavior in field settings by various researchers but interpretation of these data is limited by several methodological shortcomings. This study describes the development and testing of questionnaire measures for the Legitimate, Expert, Referent, Reward, and Coercive bases of social power and attempts to correct some of the scale format confounds that have affected previous empirical efforts. Analyses of Likert-scaled responses from the 23-item questionnaire show for the first time that these five constructs are factorially identifiable and orthogonal. Scale responses are shown to accurately reflect hierarchical status differences in an organization and to correlate significantly with such common leader behaviors as Initiation of Structure and Consideration.  相似文献   
152.
This study was designed to assess the accuracy of perceived levels of body fatness as indicated by 11- and 12-year-old children. Using a rating scale ranging from 1 (extremely lean) through 9 (extremely overweight), 50 males and 50 females estimated personal levels of body fatness. Using a 2 × 2 between-and-within-groups ANOVA, these estimates were compared to individual skinfold sum percentile scores derived from comparisons with national skinfold norms. The results revealed that the females tended to overestimate personal levels of body fatness, whereas estimates given by the male subjects were interpreted as not significantly different from skinfold sum percentile scores.  相似文献   
153.
The effectiveness of a 5-s constant time-delay procedure to teach three chained food preparation behaviors to four moderately retarded adolescent students was evaluated within a multiple probe design across behaviors. Results indicate that the procedure was effective in teaching all four students to make a sandwich, boil a boil-in-bag item, and bake canned biscuits. The skills maintained with at least 85% accuracy over a 3-month period. Training generalized from the school to the home setting for the 2 subjects that completed generalization probe sessions. The percentage of errors across all skills and students was less than 9%.  相似文献   
154.
Although peers' and teachers' evaluations of children's prosocial behavior and peers' sociometric ratings frequently have been used in studies of social development, the validity of young children's ratings of others has been questioned, as has that for teachers' ratings of prosocial behavior. In this study, preschoolers' ratings of peers' sociometric status and prosocial behavior, as well as teachers' ratings of children's prosocial dispositions, were obtained. These were correlated with children's naturally occurring prosocial or social behavior; ratings of prosocial behavior also were correlated with children's prosocial moral reasoning and prosocial self-attributions. Peers' sociometric ratings were positively related to children's sociability whereas prosocial ratings were related to helping (but not sharing) behavior. Teachers' ratings of prosocial behavior were not related to frequency of prosocial behaviors, but were positively related to developmentally mature moral judgments and self-reported motives.  相似文献   
155.
This paper emphasizes the impact of the setting, space, and general physical properties of the clinic upon the difficult patient's profound neediness and absence of inner regulatory structure. Moreover, the clinic's administrative style and requirements often related to fiscal restraints, demands for accountability for both how funds are spent and treatment outcome, all impinge upon the patient. Humanizing clinics so they have the capacity for psychotherapeutic holding and provision of safety for difficult patients are discussed in detail in this contribution.  相似文献   
156.
Tobacco, alcohol, and drug use are problems for American-Indian people. We reviewed these problems and the explanations for them and described a bicultural competence skills approach for preventing substance abuse with American-Indian adolescents. Data from a study of that approach suggest its efficacy with American-Indian youth. At posttest and a 6-month follow-up, American-Indian subjects who received preventive intervention based on bicultural competence skills concepts improved more than did American-Indian subjects in a no-intervention control condition on measures of substance-use knowledge, attitudes, and interactive skills, and on self-reported rates of tobacco, alcohol, and drug use. Our findings have implications for future substance-abuse prevention research with American-Indian people.  相似文献   
157.
The present study demonstrates the safety and effectiveness of an outpatient program designed to respond to adolescent-precipitated crises by mobilizing and restructuring the family's kinship system. Families of 75 adolescents at risk for hospitalization were followed up to 24 months after treatment with Systemic Crisis Intervention. Measures of offspring and family functioning, suicidal behavior, institutional use, and treatment costs are presented. Results clearly demonstrate the safety, effectiveness, and economic viability of Systemic Crisis Intervention.  相似文献   
158.
159.
160.
Depressed affect and time perception   总被引:1,自引:0,他引:1  
  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