全文获取类型
收费全文 | 37446篇 |
免费 | 771篇 |
国内免费 | 2篇 |
出版年
2021年 | 118篇 |
2020年 | 244篇 |
2019年 | 276篇 |
2018年 | 3754篇 |
2017年 | 3123篇 |
2016年 | 2613篇 |
2015年 | 516篇 |
2014年 | 447篇 |
2013年 | 2083篇 |
2012年 | 1224篇 |
2011年 | 3051篇 |
2010年 | 2890篇 |
2009年 | 1906篇 |
2008年 | 2313篇 |
2007年 | 2771篇 |
2006年 | 660篇 |
2005年 | 835篇 |
2004年 | 798篇 |
2003年 | 737篇 |
2002年 | 687篇 |
2001年 | 350篇 |
2000年 | 320篇 |
1999年 | 308篇 |
1998年 | 332篇 |
1997年 | 297篇 |
1996年 | 246篇 |
1995年 | 248篇 |
1994年 | 239篇 |
1993年 | 231篇 |
1992年 | 230篇 |
1991年 | 177篇 |
1990年 | 195篇 |
1989年 | 157篇 |
1988年 | 141篇 |
1987年 | 167篇 |
1986年 | 152篇 |
1985年 | 183篇 |
1984年 | 219篇 |
1983年 | 239篇 |
1982年 | 230篇 |
1981年 | 203篇 |
1980年 | 168篇 |
1979年 | 169篇 |
1978年 | 218篇 |
1977年 | 182篇 |
1976年 | 186篇 |
1975年 | 152篇 |
1974年 | 168篇 |
1973年 | 117篇 |
1972年 | 88篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
151.
152.
Robert D. Felner Mark S. Aber Judith Primavera Ana M. Cauce 《American journal of community psychology》1985,13(4):365-379
The relationship of characteristics of the social environment to the adaptation of adolescents from high-risk predisposing environments was examined. Specifically, the degree to which adolescents' perceptions of various dimensions of their family and school environment as well as sources of social support related to differential levels of personal well-being and academic adjustment was explored. Multiple regression analyses revealed differences in the salience of the dimensions of the social environment as a function of the particular sphere of functioning under consideration. Implications of the findings for developing a model for understanding the relative vulnerability of individuals at risk as well as of the design of preventive interventions are discussed. 相似文献
153.
John B. Jemmott III 《Journal of personality》1987,55(2):267-298
This article reviews studies on the relation between social motives and susceptibility to physical illness. The motives examined in the studies include power motivation and affiliation motivation and their related syndromes such as inhibited power and relaxed affiliation. The subject populations include college students as well as adults. Blood pressure, self-reports of illnesses, catecholamines, and parameters of immunologic functioning are among the indices of health outcomes investigated. Taken together, these studies suggest that social motives may be importantly related to susceptibility to illness, that the power motive may be related to heightened susceptibility to illness, particularly when the person is under stress, whereas the affiliation motive may be related to diminished susceptibility to illness. 相似文献
154.
Fourth-, fifth-, and sixth-grade students responded to a questionnaire concerning their experiences with electronic videogames and computers. Teacher ratings of academic achievement, personality characteristics, and behavior patterns were also obtained for each student. These data were used to examine a number of hypotheses concerning potential harmful or beneficial effects of electronic videogames on school-age children, and to provide preliminary evidence concerning the correlates of computer usage by school-age children. Videogame usage showed significant positive correlations with teacher ratings of impulsivity, significant negative correlations with ratings of academic achievement, and little relationship to rated sociability. Videogame use also proved positively related to other social activities and to microcomputer use. 相似文献
155.
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
156.
We tested the hypothesis that the “self-stimulatory” behaviors exhibited by some individuals may be socially mediated. Four developmentally disabled children who exhibited hand flapping and body rocking participated in a series of three experiments conducted to assess the influence of social variables on stereotyped behavior and to develop a treatment based on the assessment. Experiment 1 used an assessment procedure to determine the relative influences of social attention and task demands on stereotyped behavior. For all four children, hand flapping and body rocking increased when difficult academic tasks were introduced. Experiment 2 involved the use of a procedural time-out and demonstrated that removing task demands contingent on stereotyped behavior resulted in increased rates of hand flapping and body rocking. In Experiment 3, these results were used to develop a communication treatment that consisted of teaching the children to request assistance on the difficult tasks. This treatment resulted in significant reductions in self-stimulatory behavior. These results are consistent with the hypothesis that some forms of repetitive stereotyped behavior may come to serve social functions (e.g., escape from aversive situations). Teaching a functionally equivalent communicative alternative to escape-motivated stereotyped behavior can be an effective form of intervention for this problem. 相似文献
157.
Mark H. Lewis Alfred A. Baumeister Richard B. Mailman 《Journal of applied behavior analysis》1987,20(3):253-258
A perceptual reinforcement theory of stereotyped movements is advanced by Lovaas, Newsom, and Hickman (1987) in an effort to integrate a number of diverse observations about the origins and maintenance of this behavior. We, in turn, argue that the theory, as presented, is logically flawed and fails to take into account important biological findings and theory concerning pathological stereotyped acts. An alternative theory, derived primarily from neurological concepts, is briefly described. 相似文献
158.
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
159.
The Psychological Record - 相似文献
160.
Strengthening local alcohol programs so as to emphasize primary prevention is an active concern among mental health professionals; yet interventions intended to achieve this aim have produced only modest shifts in program orientation in most communities. An analysis of data obtained from those active in local affairs in a small community, using Q-sort techniques, suggested that contrasting perspectives toward alcohol abuse as a social problem may stand as an unseen barrier to relevant change. 相似文献