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   1134篇
  免费   46篇
  1180篇
  2023年   8篇
  2021年   12篇
  2020年   18篇
  2019年   11篇
  2018年   30篇
  2017年   29篇
  2016年   32篇
  2015年   25篇
  2014年   29篇
  2013年   153篇
  2012年   55篇
  2011年   57篇
  2010年   34篇
  2009年   30篇
  2008年   39篇
  2007年   46篇
  2006年   39篇
  2005年   40篇
  2004年   36篇
  2003年   32篇
  2002年   31篇
  2001年   23篇
  2000年   25篇
  1999年   26篇
  1998年   19篇
  1997年   12篇
  1996年   11篇
  1995年   10篇
  1994年   19篇
  1993年   13篇
  1992年   16篇
  1991年   13篇
  1990年   15篇
  1989年   10篇
  1988年   14篇
  1987年   16篇
  1986年   8篇
  1985年   10篇
  1984年   10篇
  1983年   6篇
  1982年   6篇
  1980年   7篇
  1979年   11篇
  1978年   7篇
  1975年   12篇
  1974年   7篇
  1973年   12篇
  1969年   6篇
  1968年   6篇
  1966年   5篇
排序方式: 共有1180条查询结果,搜索用时 0 毫秒
81.
We examined the associations between parental educational/occupational levels and cognitive performance in Spanish adolescents. Cognitive performance was measured by a validated Scholar Aptitudes test in 2,162 participants. Parental educational and occupational levels were positively associated with all specific cognitive abilities and the overall score (p<001 to .04). The odds ratios of having a high cognitive performance (top quartile) in adolescents with high parental educational level were 1.6 to 1.7 times higher than for those with a low parental educational level. Similarly, the odds ratios were 1.9 to 2.4 times higher for adolescents with high parental occupational level. These findings suggest an association between parental educational/occupational levels and cognitive performance in Spanish adolescents and support the parents' role in the creation of a stimulating intellectual environment.  相似文献   
82.
This paper describes the development of a self-report scale for adolescents to assess positive youth development values. It presents a substantial number of psychometric results performed on a sample of 2,400 adolescents (1,068 boys and 1,332 girls) from 12 to 17 years ( M = 14.73, SD = 1.25), who were studying secondary education in Western Andalusia. The results provide evidence of the psychometric quality of items, cross-validity of a structure of eight first-order factors and three second-order factors, obtained through exploratory and confirmatory factor analysis, and adequate reliability. This study concludes that the scale presents adequate evidence of validity and reliability that allows assessment, especially in school contexts, of a broad set of values of particular relevance to positive youth development.  相似文献   
83.
Researchers acknowledge mothers’ contributing role in influencing children’s behavioral displays of emotion, but there is a dearth in the literature on mothers’ emotion-related behaviors, beliefs, and needs. Urban, Head Start Mothers (n = 114) participated in a quantitative, exploratory investigation to examine child, maternal and community factors that may be associated with level of expressiveness, perceived role in emotional development, and receptivity to behavior support. Findings suggested that, compared to mothers raising two or more children, those raising only one child were significantly less positive in self-reported expressiveness, less supportive of the suggested role of mothers in the literature, and less receptive to parent-focused behavior support. Implications for acknowledging possibly distinct needs of Head Start mothers of singletons as well as seeking input from more experienced Head Start mothers in devising parenting interventions will be discussed.  相似文献   
84.
The dual-use issue is often framed as a series of paralyzing ‘dilemmas’ facing the scientific community as well as institutions which support innovation. While this conceptualization of the dual-use issue can be useful in certain contexts (such as in awareness-raising and as part of educational activities directed at the scientific community) its usefulness is more limited when reflecting on the governance and politics of the dual-use issue. Within this paper, key shortcomings of the dilemma framing are outlined. It is argued that many of the issues raised in the most recent debates about ‘dual-use’ bird flu research remain unresolved. This includes questions about the trajectories of certain lines of research, as well as broader trends in the practice and governance of science. This leads to difficult questions about current approaches to the dual-use issue within the US, as well as internationally.  相似文献   
85.
86.
Journal of Happiness Studies - Researchers have emphasized the detrimental effects of COVID-19 on mental health, but less attention has been given to personal strengths promoting resilience during...  相似文献   
87.
88.
T. B. Ward (1994) investigated creativity by asking participants to draw alien creatures that they imagined to be from a planet very different from Earth. He found that participant drawings reliably contained features typical of common Earth animals. As a consequence, Ward concluded that creativity is structured. The present investigation predicts that this limitation on creativity is not restricted to drawings: the use of different technology will not change creative output. To investigate this question, participants performed Ward's task twice: once using pencil and paper and once using software made to design creatures (the Spore Creature Creator). Only minor significant differences were found. This preliminarily suggests that changing tools does not affect the overall rigidity of the creative process. This lends further support to Ward's thesis on the structural rigidity of creativity. We conclude by suggesting an elaboration to Ward's thesis that will be explored in future work. We suggest that aesthetics might be one of the factors that contribute to creative constraint, in that creatures that are too unusual would be less interesting.  相似文献   
89.
This paper explores the psychological analogues of a cluster of arguments that have played an important role in motivating a now widespread, reference‐based approach in philosophy of language. What I will call the psychological analogues of Kripke‐style arguments provide a substantial motivation for a reference‐based approach to concepts. Insofar as such an approach is rarely given serious consideration, the availability of these arguments suggests the need for a rethinking of some foundational assumptions in philosophy of mind and other branches of the cognitive sciences.  相似文献   
90.
Most models of community collaboration emphasize the ability of diverse partners to come together to enact systematic changes that improve the health of individuals and communities. The ability of these groups to leverage resources is thought to be an important marker of successful collaboration and eventual improvements in community health. However, there is a paucity of research addressing linkages between systems change activities and leveraged resources. This study used a sample of collaboratives (N = 157) that received technical assistance and funding through the Georgia Family Connection Partnership (GaFCP) between 2006 and 2007. Data were collected from collaborative report of activities and funding, member ratings of collaborative functioning, and characteristics of the communities served by the collaboratives drawn from US Census data. Cross-lagged regression models tested longitudinal associations between systems change activities and leveraged dollars. The results indicated that systems change activities predict increased leveraging of resources from state/federal and private partners. However, there was no evidence that systems changes were linked with leveraging resources from local groups and agencies. These findings have important implications for providing technical assistance and training to health partnerships. Furthermore, future research should consider the relative strength of different systems change activities in relation to the ability of coalitions to leverage resources.  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