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   293篇
  免费   22篇
  国内免费   2篇
  317篇
  2024年   1篇
  2023年   1篇
  2022年   5篇
  2021年   5篇
  2020年   13篇
  2019年   17篇
  2018年   8篇
  2017年   9篇
  2016年   17篇
  2015年   13篇
  2014年   9篇
  2013年   37篇
  2012年   23篇
  2011年   24篇
  2010年   9篇
  2009年   15篇
  2008年   9篇
  2007年   15篇
  2006年   9篇
  2005年   7篇
  2004年   3篇
  2003年   3篇
  2002年   5篇
  2001年   8篇
  2000年   3篇
  1998年   7篇
  1996年   1篇
  1995年   3篇
  1994年   2篇
  1993年   2篇
  1991年   1篇
  1990年   5篇
  1989年   2篇
  1988年   2篇
  1987年   2篇
  1986年   1篇
  1985年   1篇
  1984年   1篇
  1982年   1篇
  1978年   1篇
  1976年   3篇
  1975年   1篇
  1974年   1篇
  1968年   1篇
  1967年   6篇
  1966年   1篇
  1965年   1篇
  1959年   1篇
  1956年   2篇
排序方式: 共有317条查询结果,搜索用时 15 毫秒
41.
This longitudinal study explores heterogeneity of middle school students by identifying subgroups of youth characterized by distinct truancy trajectories and by determining disability profiles that distinguish these subgroups. Participants comprised an entire 7th through 9th grade student population, with approximately 58,000 students, in a large urban school district. Latent class growth analysis was used to identify subgroups of truant youth. This analysis yielded five distinct truant subgroups: Very-Low (37 %), Low (43.4 %), Declining (3.3 %), Rising (12.8 %), and Chronic (3.6 %). Further, differential disability profiles were found in each subgroup with the control of demographic characteristics (i.e., gender, race/ethnicity, free/reduced lunch, Limited English Proficiency, grade, and prior school absences), students with serious emotional disturbance and learning disabilities demonstrated amplified risks of being classified in the Chronic or Rising subgroups, which show chronic or incremental upward truant trajectories over time. These findings are discussed in terms of their implications for future research.  相似文献   
42.
43.
This study examines the association between sense of divine involvement and sense of meaning in life. Then it proceeds to assess how this association varies by religious tradition. Using a random and national sample from the 2007 Baylor Religion Survey, this study finds that sense of divine involvement is associated with greater odds of having a sense of meaning in life. In addition, religious affiliation modifies this association. Specifically, the positive association between sense of divine involvement and the odds of having a sense of meaning in life is observed only among evangelical Protestants, mainline Protestants, and Catholics, but not among other religionists and religious nones. I discuss how the results make contributions to knowledge about the link between religious beliefs, religious tradition, and mental health.  相似文献   
44.
45.
Cross validation is a useful way of comparing predictive generalizability of theoretically plausible a priori models in structural equation modeling (SEM). A number of overall or local cross validation indices have been proposed for existing factor-based and component-based approaches to SEM, including covariance structure analysis and partial least squares path modeling. However, there is no such cross validation index available for generalized structured component analysis (GSCA) which is another component-based approach. We thus propose a cross validation index for GSCA, called Out-of-bag Prediction Error (OPE), which estimates the expected prediction error of a model over replications of so-called in-bag and out-of-bag samples constructed through the implementation of the bootstrap method. The calculation of this index is well-suited to the estimation procedure of GSCA, which uses the bootstrap method to obtain the standard errors or confidence intervals of parameter estimates. We empirically evaluate the performance of the proposed index through the analyses of both simulated and real data.  相似文献   
46.
Philosophical Studies - In the original publication of the article, the Acknowledgement section was inadvertently not included. The Acknowledgement is given in this Correction.  相似文献   
47.
Exposure to peer aggression is a major risk factor for the development of aggressive behavior in childhood and adolescence. Furthermore, peer aggression has the propensity to spread and affect individuals who were not exposed to the original source of aggression. The aim of this paper is to demonstrate that peer aggression is in many regards similar to a contagious disease. By presenting a program of research based on longitudinal and multilevel studies, we provide evidence for the contagious quality of aggressive behavior, show that individuals vary in their susceptibility to peer aggression, and describe group‐level characteristics that moderate the influence of peer aggression. We discuss mechanisms that may explain how individuals catch aggressive behavior from their peers and how the effects on the development of individuals' aggressive behavior unfold over time. Further, we examine processes that may increase the risk of being exposed to peers' aggressive behavior. We conclude with discussing implications for future studies on the contagious nature of peer aggression.  相似文献   
48.
The following paper establishes a measurement of social identity uncertainty. Based on uncertainty-identity theory, we propose social identity uncertainty is a unique type of self-uncertainty related to group identification. We further believe social identity uncertainty is comprised of two components: identity-uncertainty (i.e., uncertainty about one’s group identity) and membership-uncertainty (i.e., uncertainty about being a group member). Study 1 (N = 314) and Study 2 (N = 299) explored and confirmed that two subcomponents exist within social identity uncertainty. Study 3 (N = 295) developed convergent validity using various social identity-related constructs, and discriminant validity using dispositional constructs. Overall, we found (a) identity-uncertainty and membership-uncertainty are distinct constructs, and (b) our measurements have both convergent and discriminant validity.  相似文献   
49.
50.
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