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51.
Research on the relation between students’ achievement (ACH) and their academic self-concept (ASC) has consistently shown a Big-Fish-Little-Pond-Effect (BFLPE); ASC is positively affected by individual ACH, but negatively affected by school-average ACH. Surprisingly, however, there are few good UK studies of the BFLPE and few anywhere in the world based on science self-concept (S-ASC). Addressing this substantive limitation in existing research with data from PISA 2006, we extend new multigroup doubly-latent multilevel structural equation models – a substantive-methodological synergy. BFLPE predictions for S-ASC are supported for: the total international sample; the total UK sample; each of the four UK countries considered separately. The BFLPE was marginally larger in the UK than the international sample. However, consistent with the selective nature of school systems in the UK, the BFLPE was larger in Northern Ireland and, to a lesser extent, England than in Scotland or Wales.  相似文献   
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Recently, European school systems have seen various attempts to ‘modernise’ their governance. Market and competition oriented reforms have not been central to governance innovation strategies in German speaking countries, however, their number and relevance is rising in recent years. A free school choice policy which abolishes “school districts” which legally define fixed school catchment areas was introduced in the school year of 2007/2008 in the Austrian city of Linz.The effects of the implementation of this policy on the primary school sector were studied by a standardised questionnaire administered to a representative sample of 3425 parents of five age groups of primary school children. The return rate was about 55%. By special measures during data collection a satisfactory representation of parents with migrant background was achieved.Three questions are discussed in the paper: (1) Is there a rise in segregation in schools as a result of free choice policy? (2) Is there a change in the composition of the student population in different schools as a result of free choice policy? (3) Is there a change in parent school choice behaviour of as a result of free choice policy?Our data indicates that segregation in primary schools with respect to ethnic and social family characteristics increases after the policy implementation, but the sample size is too small to find significant results. In addition, no significant change is observed in the social composition of schools. In accordance with the previous findings no significant modifications of choice behaviour occur for different ethnic or social groups after free choice. However changes in choice motives can be observed.  相似文献   
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The purpose of this research project was to gain a greater understanding of daily routines of 4–7 year olds regarding physical activity and nutrition practices in typical early learning environments. The settings selected for this observational study included Head Start, primary, and after-school learning environments in a city in the southeast. Specifically, this exploratory study focused on the research question: What are typical daily physical activity and nutrition patterns in community-based early learning settings for young children 4–7 years of age in the United States? Two overarching themes were identified through data analysis: restriction of activity and restriction of physical movement. Results indicated that children in elementary school settings had fewer opportunities for indoor and outdoor physical activity than children in other settings and that children seek to be physically active and will do so when given the opportunity. Increasing time for both structured and unstructured physical activity and play for children ages 4–7 in early learning settings was recommended by the researchers.  相似文献   
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随着工业化进程脚步的加快,现代化痕迹遍布生活的每个角落,同时人类也不得不面临现代化生产给自然气候带来的不容忽视的严重影响。我们在渐渐失去冬天……  相似文献   
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