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   15098篇
  免费   467篇
  国内免费   4篇
  2020年   141篇
  2019年   190篇
  2018年   227篇
  2017年   246篇
  2016年   310篇
  2015年   226篇
  2014年   273篇
  2013年   1617篇
  2012年   463篇
  2011年   528篇
  2010年   364篇
  2009年   362篇
  2008年   513篇
  2007年   542篇
  2006年   553篇
  2005年   492篇
  2004年   428篇
  2003年   481篇
  2002年   480篇
  2001年   225篇
  2000年   238篇
  1999年   235篇
  1998年   237篇
  1997年   219篇
  1996年   216篇
  1995年   204篇
  1994年   209篇
  1993年   194篇
  1992年   184篇
  1991年   211篇
  1990年   167篇
  1989年   160篇
  1988年   160篇
  1987年   172篇
  1986年   171篇
  1985年   187篇
  1984年   217篇
  1983年   206篇
  1982年   238篇
  1981年   228篇
  1980年   193篇
  1979年   179篇
  1978年   209篇
  1977年   217篇
  1976年   201篇
  1975年   196篇
  1974年   200篇
  1973年   187篇
  1972年   136篇
  1968年   104篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
161.
The course of bargaining is determined in part by interdependent individuals exchanging messages so as to influence other's behaviour, and thereby to increase the likelihood of achieving outcomes consistent with their own goals. The communication of threats and promises are two major message strategies that are employed to influence the behaviour of others in a bargaining relationship. The present study examines the effects of players' level of commitment to these forms of message strategies upon behaviour in a duopoly bargaining task. Past research has oprationalized commitment in terms of the consistency with which an individual has followed through on threats or promises in the past. In the present research, Becker's (1960) concept of a side-bet is employed to provide an alternative means for defining and manipulating commitment. A side-bet obtains when either a threatener or a promiser posts a valued resource, say a bond, which they forfeit if they do not follow through on their stated threat or promise. The main expectations of the present study were that increased commitment to threat meassages would lead to more competitive behaviour and outcomes within a duopoly bargaining task, whereas increased commitment to promise messages would produce more cooperative behaviour and outcomes. Partial support for these major expectations, as well as confirmation of a number of secondary expectations, was obtained.  相似文献   
162.
In [2] a semantics for implication is offered that makes use of stories — sets of sentences assembled under various constraints. Sentences are evaluated at an actual world and in each member of a set of stories. A sentence B is true in a story s just when B s. A implies B iff for all stories and the actual world, whenever A is true, B is true. In this article the first-order language of [2] is extended by the addition of the operator the story ... says that ..., as in The story Flashman among the Redskins says that Flashman met Sitting Bull. The resulting language is shown to be sound and complete.  相似文献   
163.
The relationship between risk factors and the severity and type of childhood disorder, as measured by parent-completed Child Behavior Checklists, was examined for 768 children, ages 4–16, seen at a child mental health center. Regression analyses revealed no significant relationships between any combination of risk factors and the total number of behavior problems, internalizing, or externalizing scores for the entire group, males and females separately, or for the age and sex groupings of 6- to 11- and 12-to 16-yearolds. Chi-square tests revealed no relationship of profile type with any risk factor or with total number of risk factors. Implications for broad-based child assessment and risk factor research within a clinical population are discussed.We wish to thank Orin Bolstad, Linda Magnuson, and Julian Taplin for their assistance in this project.  相似文献   
164.
The self-perceived and independently observed cognitive and social competence of young adolescents as a function of parental conflict and recent divorce was investigated. Subjects were 40 young adolescents between the ages of 11 years 1 month and 15 years 1 month. A 2×2 factorial design was used, with the independent variables being parental marital status (married vs. recently divorced) and parental conflict (high vs. low). Dependent variables included the following measures of adolescent competence: adolescent-completed measures of self-perceived competence, teacher-completed measures, behavioral observations, and school grades. The results indicated that the level of parental conflict, rather than parental marital status, appears to be the critical variable associated with adolescents' independently observed levels of cognitive and social competence. In regard to adolescents' self-perceived levels of cognitive and social competence, parental marital status was found to be the critical variable. The implications of these findings are discussed.This research was supported by the William T. Grant Foundation and the University of Georgia's Institute for Behavioral Research.  相似文献   
165.
166.
167.
This article presents Albert Ellis' personal responses to the Survey of Rational-Emotive Therapists and his answers to a number of questions that the first and second authors asked Ellis regarding some of his responses. Ellis also commented on how adequately he thought the results of the survey appeared to represent the current philosophies and practices of RET.  相似文献   
168.
169.
All 51 jurisdictions in the United States require physicians to report suspected child abuse. In most jurisdictions, reporting requirements override both confidentiality and privilege associated with the physician-patient relationship. The authors review the literature relevant to the conflict between privacy and reporting abuse and report the results of a national survey of therapists at sex offender treatment units. They discuss ethical problems experienced under these statutes by therapists who attempt to provide treatment for sex offenders, and by therapists who are required to report past instances of child abuse even when there is no evidence of ongoing abuse.  相似文献   
170.
Most of the empirical literature on juvenile homicide has emerged from the clinical experience of mental health professionals who have diagnosed and/or treated youngsters who killed. After a critical review of this literature, data on 787 juvenile homicide offenders are presented and discussed. These data indicate that intrafamilial killings represent but a small fraction of all homicides perpetrated by juveniles and that there are clear differences between intrafamilial and extrafamilial juvenile homicides.  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