全文获取类型
收费全文 | 66626篇 |
免费 | 2793篇 |
国内免费 | 23篇 |
出版年
2020年 | 791篇 |
2019年 | 940篇 |
2018年 | 1311篇 |
2017年 | 1369篇 |
2016年 | 1430篇 |
2015年 | 1035篇 |
2014年 | 1252篇 |
2013年 | 6091篇 |
2012年 | 2292篇 |
2011年 | 2335篇 |
2010年 | 1415篇 |
2009年 | 1448篇 |
2008年 | 2074篇 |
2007年 | 2018篇 |
2006年 | 1845篇 |
2005年 | 1602篇 |
2004年 | 1636篇 |
2003年 | 1574篇 |
2002年 | 1533篇 |
2001年 | 2108篇 |
2000年 | 1965篇 |
1999年 | 1521篇 |
1998年 | 802篇 |
1997年 | 701篇 |
1996年 | 740篇 |
1995年 | 694篇 |
1994年 | 676篇 |
1993年 | 676篇 |
1992年 | 1256篇 |
1991年 | 1132篇 |
1990年 | 1124篇 |
1989年 | 1071篇 |
1988年 | 1036篇 |
1987年 | 977篇 |
1986年 | 964篇 |
1985年 | 1035篇 |
1984年 | 892篇 |
1983年 | 789篇 |
1982年 | 642篇 |
1981年 | 609篇 |
1979年 | 871篇 |
1978年 | 719篇 |
1977年 | 608篇 |
1976年 | 608篇 |
1975年 | 721篇 |
1974年 | 816篇 |
1973年 | 796篇 |
1972年 | 670篇 |
1971年 | 624篇 |
1968年 | 670篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
901.
Certification is the process whereby older juveniles who have committed felony offenses are transferred from juvenile courts to adult courts. The present study examined the variables that influence decisions in these cases and used attribution theory to conceptualize the process. Data were obtained from files of 150 youths on whom certification petitions had been filed from January 1981 to October 1984. Of these, 125 had been certified and 25 had not. The sample comprised 148 males and 2 females. Data included seriousness of the offense, previous offenses, potential for aggressiveness, level of involvement in the offense, age, court in which the case was heard, year in which the case was heard, IQ, family income and sex. Level of involvement, seriousness of the offense and potential for aggressiveness had the strongest association with certification outcomes, with those high on these measures significantly more likely to be certified. The cluster that predicted outcomes best included level of involvement, seriousness of the offense, potential for aggressiveness, IQ, year in which the case was heard, court in which the case was heard, sex and previous offenses. The most explicitly behavioral variable—how actively the child participated in the offense—was the best single predictor of outcomes. 相似文献
902.
Karen M. Sowers-Hoag Bruce A. Thyer Jon S. Bailey 《Journal of applied behavior analysis》1987,20(2):133-138
A program using behavioral practice, assertiveness training, and social and contrived reinforcers was developed to establish and maintain automobile safety belt use by young children. Sixteen children (ages 4.8 to 7 years) who never used their safety belts during a 5-day preexperimental observation period were randomly assigned to two groups of eight each. A multiple baseline design across groups was used to evaluate the effectiveness of the training program. During the 8-day baseline period for Group 1, no children used their safety belts when unobtrusively observed while being driven from school. During the 26-day intervention period, the children were buckled up on 96% of the observations. Follow-up probes conducted 2–3 months after program discontinuance found safety belt use to range from 86% to 100%. For Group 2, the 14-day baseline safety belt use averaged 6% and increased to a mean of 81% during the 20-day training and maintenance program. Follow-up probes 2–3 months later found safety belt use to occur during 75% to 96% of the observations. Parent questionnaires indicated the generalizability and social validity of the program. 相似文献
903.
We examined the effects of a peer initiation intervention with high- and low-status nonhandicapped students on the behavior of untrained peers toward handicapped students. In the context of a counterbalanced withdrawal design, high- and low-status nonhandicapped students were taught to direct social initiations to eight severely handicapped students during recess activities. The interactions of the high-status students resulted in higher levels of initiations by untrained peers toward the handicapped students than did the interactions of the low-status students. Social response levels were also differentially affected by the status of the peer initiator. 相似文献
904.
Histories of sexual abuse in adolescent male runaways 总被引:3,自引:0,他引:3
In this study, data on sexual victimization in the histories of 89 Canadian male runaways as well as information on physical victimization, family structure, family financial stability, delinquent and criminal activities, and reasons for running away from home were evaluated. The population of male runaways evidenced dramatically higher rates of sexual and physical abuse than did randomly sampled populations. Sexually abused and nonsexually abused male runaways shared characteristics noted in the literature as common to runaways: problem families, high rates of delinquency, depression, tension, low self-image, and history of physical abuse. Sexually abused male runaways differed from nonsexually abused runaways in their reactions to their runaway event, with sexually abused male runaways responding in highly avoidant patterns coupled with extreme withdrawal from all types of interpersonal relationships. These differences are explained as consistent with known sequelae of sexual abuse, and the implications for treatment by runaway shelters and for further research are suggested. 相似文献
905.
M J Werebe 《Adolescence》1987,22(85):129-142
In order to determine how adolescents perceive their relationships, a set of eight drawings representing one, two or three characters, whose sex and relationships where not clearly defined, were shown to 403 Parisian adolescents (227 girls and 176 boys) aged 15 to 19. The majority of data converge for all subjects, regardless of the sex, curriculum or socioeconomic factors. The subjects consistently identify more mixed-sex dyads and triads than same-sex in all pictures. This predominance does not imply that the adolescents perceived all relationships as having a romantic connotation. Some data seem consistent with the traditional sex role stereotypes. The subjects' responses do not seem to reflect the reality of their own peer relationships. 相似文献
906.
907.
908.
909.
M Viederman 《Journal of the American Psychoanalytic Association》1987,35(4):967-998
René Magritte was profoundly influenced in his painterly style and in the content of many of his paintings by his mother's suicide when he was fourteen. This paper explores the influence of this traumatic event on his work. My thesis is that the nighttime suicide of Magritte's mother by drowning: (1) had a profound impact on the form and style of his paintings; (2) his paintings represented an effort, mostly successful, to contain and master through intellectual control with isolation of affect the trauma of this experience, which must at the time have evoked helplessness and despair; (3) the contents of a series of his paintings directly reconstruct the traumatic experience under control and in the service of mastery; and (4) there are paintings, mostly painted at the time he clearly developed his own style (1926-1930), that reveal a breakthrough of projected primitive aggressive impulses and unconscious representations of the aggressive mother. In these latter paintings, both form and content are dramatically different from the main corpus of Magritte's work. 相似文献
910.
The effects of anxiety management training were evaluated by allocating 66 generally anxious clients to either a wait list condition, non-directive counselling, or a combination of relaxation and brief cognitive therapy. Anxiety management was significantly more effective than the wait list condition on a number of relevant measures at post-treatment, but there were relatively few differencs between anxiety management and non-directive counselling, either at post-treatment or at 6 months follow-up. Those differences which were found could plausibly be explained in terms of the demand characteristics of training in relaxation or cognitive therapy. It was concluded that anxiety management is clearly better than a non-treatment control condition, but that its superiority to plausible alternatives which lack the specific components thought to be responsible for improvement has yet to be demonstrated. 相似文献