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471.
Patricia Patterson Denise L. Wiksten Lori Ray Cheryl Flanders Dawn Sanphy 《Research quarterly for exercise and sport》2013,84(4):448-451
The purpose of this article was to highlight important research needs related to physical activity in 3- to 5-year-old children. We identified research needs in 3 major categories: health effects, patterns of physical activity, and interventions and policies. The top research needs include identifying the health effects of physical activity, the effects of physical activity on the development of healthy weight, the effects of physical activity on learning and behavior, and the health implications of sedentary behavior. Research questions concerning patterns of physical activity include determining the prevalence of 3- to 5-year-olds meeting the current physical activity guidelines; the social and environmental factors that influence physical activity in home, preschool, and community settings; and how physical activity tracks into later childhood, adolescence, and adulthood. Research questions about interventions and policies include identifying the most effective strategies to promote physical activity in home, child care, and community settings and to reach diverse populations of young children, identifying effective intervention implementation and dissemination strategies, and determining the effectiveness of national, state, local, and institutional policies for increasing physical activity. In conclusion, research is needed to establish a full understanding of the health implications of physical activity in 3- to 5-year-old children, to better understand the nature of physical activity behavior in this group, and to learn how to promote physical activity in young children. 相似文献
472.
Chris Michael Kirk Rhonda K. Lewis Angela Scott Denise Wren Corinne Nilsen Deltha Q. Colvin 《Educational studies》2012,38(5):507-519
Over the past three decades, more and more students are expressing a desire to attend college, yet for many members of disenfranchised groups, this goal is often not attained. While many factors contribute to these disparities, research has shown that students begin adjusting their expectations (what they think they can achieve) for the future in relation to their idealised aspirations (what they would like to achieve). The current study explores this gap among 207 eighth grade students from two urban middle schools. Using the School Attitude Assessment Survey-Revised, three factors were found to predict expectations which matched student aspirations. These factors were academic motivation and self-regulating behaviours, academic self-perception and attitudes towards teachers. Implications for educational interventions and school reform are discussed. 相似文献
473.
474.
Lynda Dunlop Lucy Atkinson Denise Mc Keown Maria Turkenburg-van Diepen 《British Educational Research Journal》2021,47(6):1540-1559
A necessary condition for a functioning democracy is the participation of its citizens, including its youth. This is particularly true for political participation in environmental decisions, because these decisions can have intergenerational consequences. In this article we examine young people’s beliefs about one form of political participation—protest—in the context of communities affected by fracking and associated anti-fracking protest, and discuss the implications of these representations for education. Drawing on focus groups with 121 young people (aged 15–19) in five schools and colleges near sites which have experienced anti-fracking protest in England and Northern Ireland, we find young people well-informed about avenues for formal and non-formal political participation against a background of disillusionment with formal political processes and varying levels of support for protest. We find representations of protest as disruptive, divisive, extreme, less desirable than other forms of participation and ineffective in bringing about change but effective in awareness-raising. These representations are challenging, not least because the way protest is interpreted is critical to the way people think and act in the world. These representations of environmental protest must be challenged through formal education in order to safeguard the UN Convention on the Rights of the Child and ensure that the spirit of Article 11 of the UK Human Rights Act is protected. 相似文献
475.
476.
Not quite normal: Consequences of violating the assumption of normality in regression mixture models
Lee Van Horn M Smith J Fagan AA Jaki T Feaster DJ Masyn K Hawkins JD Howe G 《Structural equation modeling》2012,19(2):227-249
Regression mixture models are a new approach for finding differential effects which have only recently begun to be used in applied research. This approach comes at the cost of the assumption that error terms are normally distributed within classes. The current study uses Monte Carlo simulations to explore the effects of relatively minor violations of this assumption, the use of an ordered polytomous outcome is then examined as an alternative which makes somewhat weaker assumptions, and finally both approaches are demonstrated with an applied example looking at differences in the effects of family management on the highly skewed outcome of drug use. Results show that violating the assumption of normal errors results in systematic bias in both latent class enumeration and parameter estimates. Additional classes which reflect violations of distributional assumptions are found. Under some conditions it is possible to come to conclusions that are consistent with the effects in the population, but when errors are skewed in both classes the results typically no longer reflect even the pattern of effects in the population. The polytomous regression model performs better under all scenarios examined and comes to reasonable results with the highly skewed outcome in the applied example. We recommend that careful evaluation of model sensitivity to distributional assumptions be the norm when conducting regression mixture models. 相似文献
477.
The UK English subject benchmark statements express the discipline’s commitment to contribute to an ‘ideal of lifelong learning’. In this article, I consider what this commitment may mean for practice and explore why its attainment is complex and contentious. In doing so, I examine some of the ways in which lecturers’ professional identities are experienced and enacted in educational settings where students have their first introduction to higher education English Studies. I suggest that the pedagogic principles and practices which lecturers describe need to be seen as deeply embedded within networks of social and discipline-based discourses and social and institutional relations. 相似文献
478.
Disclosure and secrecy in adolescent-parent relationships 总被引:3,自引:0,他引:3
Beliefs about parents' legitimate authority and adolescents' obligations to disclose to parents and actual disclosure and secrecy in different domains were examined in 276 ethnically diverse, lower middle-class 9th and 12th graders (Ms=14.62 and 17.40 years) and their parents (n=249). Adolescents were seen as more obligated to disclose prudential issues and less obligated to disclose personal than moral, conventional, and multifaceted issues; parents viewed adolescents as more obligated to disclose to parents than adolescents perceived themselves to be. Adolescents disclosed more to mothers than to fathers, particularly regarding personal issues, but mothers overestimated girls' disclosure. Greater trust, perceived obligations to disclose, and, for personal issues, more parental acceptance and psychological control predicted more disclosure and less secrecy. 相似文献