Daily steps in midlife and older adults: relationship with demographic, self-rated health, and self-reported physical activity

The relationship between average daily step counts and age, body mass index (BMI), self-reported physical activity (PA) level, and perceived health was determined in 85 middle-aged and older adults who wore a pedometer for 7 consecutive days. Average daily steps were significantly (p < .05) correlated with BMI (r = -.26), age (r = -.44) and perceived health (r = .53) but not with self-reported PA level (r = .19). The adjusted percentage of participants classified as meeting the PA recommendation in < or = 5,000, 5,001-9,999, and > or = 10,000 steps/day categories ranged from 53 to 61%. These findings support previous evidence in younger populations suggesting that the recommended minimal level of health-related PA may be achieved despite not accumulating 10,000 steps/day.     

Physical Activity Classification in Youth Using Raw Accelerometer Data from the Hip

ABSTRACT

This study developed and evaluated machine learning algorithms to predict children’s physical activity category from raw accelerometer data collected at the hip. Fifty participants (mean age = 13.9 ± 3.0 y) completed 12 activity trials that were categorized into 5 categories: sedentary (SED), light household activities and games (LHHAG), moderate-vigorous games and sports (MVGS), walking (WALK), and running (RUN). Random Forest (RF) and Logistic Regression (LR) classifiers were trained with features extracted from the vector magnitude using 10?s non-overlapping windows. Classification accuracy was evaluated using leave-one-subject-out cross validation. Overall accuracy for the RF and LR classifiers was 95.7% and 94.3%, respectively. Classification accuracy was excellent for SED (96.3% – 98.1%), LHHAG (92.3% – 95.2%), WALK (94.5% – 97.1%), RUN (99.5% – 99.6%); and MVGS (87.5% – 92.7%). The results indicate that classifiers trained on features in the raw acceleration from the hip can be used for activity recognition in young people.

Abbreviations: VM: Vector Magnitude; RF: Random Forest; LR: Logistic Regression; LOSO: Leave-One-Subject-Out     

The Repetitive Name Game

Because of the Common Core State Standards there is a renewed emphasis on the importance of visual literacies in today's classrooms. Students need prior knowledge before approaching these types of texts. This article describes the results of one 6th-grade language arts class's engagement in pre-reading prior to viewing a theatrical performance. The study examined whether obtaining background knowledge through print can be used effectively to increase the knowledge of drama, visual literacy, and nonprint text. The study utilized an experimental control-group design; t-test results revealed that using pre-reading as a comprehension strategy is more effective than just viewing drama. In addition, factorial ANOVA results showed that the treatment did not signficantly interact with reading ability or gender. Overall, this 6th-grade class's comprehension skills were enhanced with the help of pre-reading. This study indicates that pre-reading is a powerful strategy that can build background knowledge and ultimately increase comprehension of visual literacy for all students, and it and offers insight for a larger study.     

On the Performance of Likelihood-Based Difference Tests in Nonlinear Structural Equation Models

This article investigates likelihood-based difference statistics for testing nonlinear effects in structural equation modeling using the latent moderated structural equations (LMS) approach. In addition to the standard difference statistic T_D, 2 robust statistics have been developed in the literature to ensure valid results under the conditions of nonnormality or small sample sizes: the robust T_DR and the “strictly positive” T_DRP. These robust statistics have not been examined in combination with LMS yet. In 2 Monte Carlo studies we investigate the performance of these methods for testing quadratic or interaction effects subject to different sources of nonnormality, nonnormality due to the nonlinear terms, and nonnormality due to the distribution of the predictor variables. The results indicate that T_D is preferable to both T_DR and T_DRP. Under the condition of strong nonlinear effects and nonnormal predictors, T_DR often produced negative differences and T_DRP showed no desirable power.     

Double Dissociation Between Reading and Spelling Deficits

In two studies dissociations between reading and spelling skills were examined. Study 1 reports equally high prevalence rates for isolated deficits in reading (7%) or spelling (6%) in a representative sample (N = 2,029) of German-speaking elementary school children. In Study 2, children with isolated deficits were presented with the same words to read and spell. The double dissociation was replicated. Good readers/poor spellers named pseudohomophones as quickly as their corresponding words, and their phonological awareness skills were adequate, suggesting that their reading might be based on highly efficient decoding procedures. Poor readers/good spellers showed slow word naming and a clear slowing when reading pseudohomophones suggesting a reliance on intact orthographic representations in word reading. A deficit in rapid automatized naming in this group suggests problems in fast visual–verbal access. The profile of poor readers/poor spellers fits the double-deficit group in Wolf and Bowers's (1999) Wolf, M. and Bowers, P. G. 1999. The double-deficit hypothesis for the developmental dyslexias. Journal of Educational Psychology, 91: 415–438. [Crossref], [Web of Science ®] , [Google Scholar] dyslexia theory.     

Indikatoren kultureller Bildung

The arts form an integral part of human education. Arts education contributes to the development of the individual’s expressive needs and interests. It serves to pass on cultural and aesthetic practices and enables active participation in the cultural life of society. Over the last years, the demand for data has been growing, and in 2012, the German Federal Ministry of Education and Research (BMBF), together with the Standing Conference of the Länder Ministers of Education (KMK), commissioned the German national report on education with a specific focus on “cultural and aesthetic education over the life-span”. The present contribution defines the scope of this thematic focus and presents an overview of available data sources for its operationalization. It describes the process of structuring the domain, the construction of statistics and indicators, and outlines ways for further improving the monitoring of arts education in Germany.     

Moral relations in encounters with nature

The overall aim of this article is to develop in-depth knowledge about the connection between outdoor experiences and moral attitudes towards nature. The study focuses on processes in which moral relations are at stake in encounters between students and nature. The purpose is to identify such events, describe their specific circumstances and clarify how moral relations are established in these events. The empirical material consists of video-recordings of activities in three different outdoor education practices. In order to identify and categorise moral situations, an analytical tool called the ethical tendency is used. This tool is based on Wittgenstein’s language game method. The findings show that in the investigated outdoor education practices, moral relations towards nature are established in several different ways. The article concludes with four educational implications: responsibility when dealing with moral reactions; bringing ethical questions to the fore; different educational conditions create different encounters with nature; and the consequences of different language games.     

“Betwixt and Between”: Leisure-time Teachers and the Construction of Professional Identities

In 2014, a newly formed group of teachers graduated from Swedish universities. In addition to their qualification as leisure-time pedagogues, their degree includes teaching practical/aesthetical subjects in compulsory school. This group of teachers thus has to relate to dual professional identities and to maintain a balance between the socially oriented leisure-time centres and a goal- and results-driven school. In this article we describe their first two years after graduation, trying to get hold of their negotiation of professional identities and orientation in the professional landscape. Results shows that the graduates try to balance own ideals and hybrid professional intentions against traditional professional identities and labour market conditions and that position in a liminal phase might be crucial for the outcome.     

Bildung and educational action research: resources for hope in neoliberal times

This paper draws upon empirical research to provide insights into current teacher learning practices under broader neoliberal conditions, and how the latter might be resisted. The paper contrasts neoliberal approaches to teachers’ learning with the Nordic tradition of educational action research and ‘Bildung’ as alternative resources to guide teachers’ and principals’ collective learning practices in schools, and draws upon empirical research to provide evidence of the benefits and challenges of doing so. The paper draws upon research into the learning practices of primary teachers in Australia, early childhood teachers in Sweden, and principals in Finland. The research reveals the influence of more Bildung-informed conceptions of educational action research, even as these are challenged by existing administrative cultures, and neoliberal pressures. The research presents ‘resources for hope’ to promote collective learning based on democratic values, not in an idealized or abstract manner, but in a way which is simultaneously cognizant of empirical realities.