Tracking of physical activity in pubertal boys with different BMI over two-year period

We examined the tracking of physical activity (PA) measured by accelerometers and subjective self- and parental reports in normal weight and overweight and obese pubertal boys over two-year period. In total, 156 boys with mean (±SD) age of 11.53 ± 0.76 at baseline and with mean age of 13.94 ± 0.74 at 2 year follow-up were studied. At baseline and approximately two years later, the boys completed self-report questionnaire and wore an accelerometer for seven consecutive days. On the basis of first year assessment’s body mass index (BMI), the children were grouped as normal weight and overweight and obese groups according to BMI cut-offs. Tracking correlations of objectively measured PA and subjectively measured PA were fairly similar across the 12–14 year-old-boys weight groups over two year period. Tracking correlations of objectively measured PA and subjectively measured PA were not significantly different over two-year period between both BMI groups. The results of the study show that pubertal boys objectively measured PA decreased over two-year period and so the boys started to be less active in their pubertal period.     

The importance of specifying and studying causal mechanisms in school-based randomised controlled trials: lessons from two studies of cross-age peer tutoring

Based on the experience of evaluating 2 cross-age peer-tutoring interventions, we argue that researchers need to pay greater attention to causal mechanisms within the context of school-based randomised controlled trials. Without studying mechanisms, researchers are less able to explain the underlying causal processes that give rise to results from randomised controlled trials. Studying implementation fidelity is necessary but not sufficient for causal explanation; the study of causal mechanisms through the application of mixed methods is also required. Due to the increasingly complicated nature of many classroom-based innovations that are subject to evaluation, and the potentially distal nature of hypothesised effects, particularly on attainment, programme theory and articulation of mechanisms are essential in enhancing causal explanation and promoting the accumulation of knowledge of what works and why in classroom settings.     

Institutional barriers for adults’ participation in higher education in thirteen European countries

As the demand for international education increases, middle-income non-English speaking countries, such as South Korea, play an increasing role in hosting the world’s students. This mixed-methods study compares the different motivations and experiences of international students within and outside the East Asian region. Based on findings, this paper suggests the possibility of Korea developing its position as a regional hub for education in East Asia. It also discusses related issues such as English-Medium Instruction in Korean higher education as well as strategies for international student recruitment.     

Children's knowledge of astronomy and its change in the course of learning

This study examined the nature of 5-, 6-, and 7-year-old children's (n = 113) knowledge of astronomy and the process of knowledge change during learning. Children's pre-existing knowledge was assessed by questions and drawing tasks. About half of the children were taught elementary concepts of astronomy in small groups and afterwards all participants’ knowledge was assessed again. Most children could be categorized as having fragmented astronomy knowledge and the proportion of non-scientific models first proposed by Vosniadou & Brewer [Vosniadou, S., & Brewer, W. F. (1992). Mental models of the Earth: A study of conceptual change in childhood. Cognitive Psychology, 24, 535–585] was no greater than could be expected by chance. Children seemed to acquire factual information rather easily and therefore early instruction should introduce the core facts related to the topics. Some children over-generalized new knowledge very easily, indicating that the materials used in teaching may promote the development of non-scientific notions and that those notions must be addressed promptly to avoid the development of coherent non-scientific models.     

Does School Admission by Zoning Affect Educational Inequality? A Study of Family Background Effect in Estonia,Finland, and Sweden

We indicate the size of family background effects in Sweden, Finland, and Estonia – countries that differ in both the rhetoric and extensiveness of the system-level school choice policies. Family background effect is defined as the dependence of student achievement on family background characteristics, such as parental education, income, and social status. The number of books at home is used as a proxy when operationalising family background, and its effect is measured as a percentage of individual-level PISA scores. Fixed-effect regression results reveal that family background remains a powerful determinant in the educational results of 15-year-old students in all three cases, being largest in Sweden. Furthermore, we show how the family background effect is moderated by school-level choice policy, that is, how students and schools are matched. The analysis reveals that zoning policies have statistically significant negative effects on the impact of the family background effect, independent of country-level policies.     

The Relationships among Verbal Skills of Primary School Students with Specific Learning Disabilities and a Typically Developing Comparison Group

The relationships among verbal skills of primary school students with learning disabilities and a typically developing comparison group were studied and compared with written tasks carried out in Estonian classrooms. Word defining, categorising/justifying, guessing, and memorising tasks were used. The participants were 251 students in Grades 2–4; of these, 163 were described as achieving normally and were in regular education classrooms, and 88 were diagnosed as having specific learning disabilities and attended special schools or classes for students with specific learning disabilities. Except for performance on the memorising tasks by grade, all the scores were better in upper grades. Children with learning disabilities performed less well than the children in the typically developing comparison group on all the tests. Associations between the results of various tests were stronger in the typically developing comparison group than in the group of children with learning disabilities.