Validation of a wireless accelerometer network for energy expenditure measurement

The purpose of this study was to validate a wireless network of accelerometers and compare it to a hip-mounted accelerometer for predicting energy expenditure in a semi-structured environment. Adults (n = 25) aged 18–30 engaged in 14 sedentary, ambulatory, exercise, and lifestyle activities over a 60-min protocol while wearing a portable metabolic analyser, hip-mounted accelerometer, and wireless network of three accelerometers worn on the right wrist, thigh, and ankle. Participants chose the order and duration of activities. Artificial neural networks were created separately for the wireless network and hip accelerometer for energy expenditure prediction. The wireless network had higher correlations (r = 0.79 vs. r = 0.72, P < 0.01) but similar root mean square error (2.16 vs. 2.09 METs, P > 0.05) to the hip accelerometer. Measured (from metabolic analyser) and predicted energy expenditure from the hip accelerometer were significantly different for the 3 of the 14 activities (lying down, sweeping, and cycle fast); conversely, measured and predicted energy expenditure from the wireless network were not significantly different for any activity. In conclusion, the wireless network yielded a small improvement over the hip accelerometer, providing evidence that the wireless network can produce accurate estimates of energy expenditure in adults participating in a range of activities.     

Trends in ethnic inequality in the attainment of vocational degrees: a cohort study in Germany

The present article analyzes the development of the ethnic gap—with respect to the attainment of vocational degrees—over the immigration cohorts 1960–2001 by examining how social integration indicators and general secondary school education may help to explain the trend. It was found that the gap between natives and migrants increased. Above all, the large increase in the gap over cohorts between Germans and Turks is alarming. In contrast to that the gap and its increase between the group of immigrants from Central-/Eastern-/Southeastern European countries as well as from other former recruitment countries and German natives is comparably small and can to a large extent be explained by a growing gap regarding the level of general secondary education among the newer immigration cohorts and native Germans due to educational expansion and to a growing impact of the secondary school education for the achievement of vocational education. The effect of social integration plays a smaller role compared to general secondary school education and it even decreases over immigration cohorts.     

Recoding strategies of German learners of English as a foreign language

This study investigated whether German learners of English as a foreign language (EFL) acquire additional recoding strategies that they do not need for recoding in the consistent German orthography. Based on the psycholinguistic grain size theory (Ziegler & Goswami, 2005) we expected students with little experience in EFL to use the same small-grain recoding strategy as in German, while more advanced students were expected to switch flexibly between small and large grain size recoding strategies when reading English nonwords. German students in Grades 5, 7, and 9, as well as university students were presented with an experimental nonword reading paradigm introduced by Goswami, Ziegler, Dalton, and Schneider (2003) which assesses the effects of language (nonwords derived from German vs. English), orthographic neighborhood, item length and presentation format (blocked vs. mixed) on reading latencies and accuracies. The data were analyzed using hierarchical linear models. The youngest age group did not use larger units to read English nonwords, but mostly applied simple grapheme-phoneme translation, as they would in their first language. University students were able to switch flexibly between large- and small size recoding strategies.     

Factors behind low reading literacy achievement

The initial results of the Programme for International Student Assessment (PISA) indicated that Finnish and Swedish students' are among the best readers in all OECD countries. However, the literacy performance of 7% of Finnish and 12% of Swedish students' remains at a level which is not sufficient for further studies or active citizenship. This article reports a further comparative study which explores, compares and contrasts, by means of two‐level logistic regression models, students' personal, socio‐economic and cultural factors and their effects on low as opposed to average reading literacy achievement in Finland and Sweden. The results indicate that the risk of being a low achiever is strongly determined by gender and by several sociocultural factors as well as by students' personal characteristics, attitudes and activities both at and outside school. The constructed model was relatively similar and predicted with approximately equal degrees of probability membership in the risk group in both countries. This lays a solid foundation for joint pedagogic developmental efforts.     

ATP and phosphocreatine utilization in single human muscle fibres during the development of maximal power output at elevated muscle temperatures

Abstract

In this study, we examined the effect of muscle temperature (T _m) on adenosine triphosphate (ATP) and phosphocreatine utilization in single muscle fibres during the development of maximal power output in humans. Six male participants performed a 6-s maximal sprint on a friction-braked cycle ergometer under both normal (T _m = 34.3°C, s = 0.6) and elevated (T _m = 37.3°C, s = 0.2) muscle temperature conditions. During the elevated condition, muscle temperature of the legs was raised, passively, by hot water immersion followed by wrapping in electrically heated blankets. Muscle biopsies were taken from the vastus lateralis before and immediately after exercise. Freeze-dried single fibres were dissected, characterized according to myosin heavy chain composition, and analysed for ATP and phosphocreatine content. Single fibres were classified as: type I, IIA, IIAX25 (1 – 25% IIX isoform), IIAX50 (26 – 50% IIX), IIAX75 (51 – 75% IIX), or IIAX100 (76 – 100% IIX). Maximal power output and pedal rate were both greater (P < 0.05) during the elevated condition by 258 W (s = 110) and 22 rev · min^?1 (s = 6), respectively. In both conditions, phosphocreatine content decreased significantly in all fibre types, with a greater decrease during the elevated condition in type IIA fibres (P < 0.01). Adenosine triphosphate content was also reduced to a greater (P < 0.01) extent in type IIA fibres during the elevated condition. The results of the present study indicate that after passive elevation of muscle temperature, there was a greater decrease in ATP and phosphocreatine content in type IIA fibres than in the normal trial, which contributed to the higher maximal power output.     

Phonological Awareness and Rapid Automatized Naming as Longitudinal Predictors of Reading in Five Alphabetic Orthographies with Varying Degrees of Consistency

ABSTRACT

Although phonological awareness (PA) and rapid automatized naming (RAN) are confirmed as early predictors of reading in a large number of orthographies, it is as yet unclear whether the predictive patterns are universal or language specific. This was examined in a longitudinal study across Grades 1 and 2 with 1,120 children acquiring one of five alphabetic orthographies with different degrees of orthographic complexity (English, French, German, Dutch, and Greek). Path analyses revealed that a universal model could not be confirmed. When we specified the best-fitting model separately for each language, RAN was a consistent predictor of reading fluency in all orthographies, whereas the association between PA and reading was complex and mostly interactive. We conclude that RAN taps into a language-universal cognitive mechanism that is involved in reading alphabetic orthographies (independent of complexity), whereas the PA–reading relationship depends on many factors like task characteristics, developmental status, and orthographic complexity.     

Educational psychology as an evolving discipline: trends and synthesis in Asia Pacific Education Review

Educational psychology has seen rapid growth as an academic discipline in recent years. The current study reviewed research articles published in Asia Pacific Education Review (APER), a journal that has been gaining greater international recognition, to reveal recent trends in educational psychology research in Asia Pacific. Specifically, the study reviewed general (country, research methods and academic subject) and topical trends among 84 articles published in APER from 2005 to 2013. Findings of the study revealed that studies on diverse age groups were conducted in various countries. Although quantitative research greatly outnumbered qualitative research, qualitative research appeared to be increasingly accepted. Topics from special education and counseling were actively studied, with the greatest focus on learner characteristics highlighting individual differences. Outlined research trends and related discussions in this study may be useful for educational psychology researchers in East Asia.     

Development of Rapid Temporal Processing and Its Impact on Literacy Skills in Primary School Children

In a longitudinal study, auditory and visual temporal order thresholds (TOTs) were investigated in primary school children (N = 236; mean age at first data point = 6;7) at the beginning of Grade 1 and the end of Grade 2 to test whether rapid temporal processing abilities predict reading and spelling at the end of Grades 1 and 2. Auditory and visual TOTs differed but showed comparable developmental trajectories over 20 months. Visual TOTs were not predictive of literacy measures; auditory TOTs in Grade 1 were the best predictor. Interestingly, they were related to spelling in Grade 2 while auditory TOTs in Grade 2 were not, suggesting that rapid auditory processing abilities have a causal influence on literacy development.     

Learning how to see and feel: Alfred Lichtwark and his concept of artistic and aesthetic education

Abstract

Focusing on Lichtwark’s concept of museology, this article shows what role he envisaged for art in public life at a time when the rise of mass consumption and popular culture created new lifestyles. Lichtwark’s concept of artistic and aesthetic education did not only extend to museums and classrooms but also to dilettantism as a basis for educating taste and developing an appreciation of the arts that would have a positive economic impact. The article looks at the contemporary entanglements and different contexts of Lichtwark’s ideas and relates them to recent approaches to cultural learning. Generally speaking, it argues that concepts of cultural learning are a bundle of entangled threads that connect and concern not only the sphere of art but also contradictory values and norms, economic production, and the emergence of new important status groups such as consumers.