Applying decision tree induction for identification of important attributes in one-versus-one player interactions: A hockey exemplar

Abstract

Decision tree induction is a novel approach to exploring attacker-defender interactions in many sports. In this study hockey was chosen as an example to illustrate the potential use of decision tree inductions for the purpose of identifying and communicating characteristics that drive the outcome. Elite female players performed one-versus-one contests (n = 75) over two sessions. Each contest outcome was classified as either a win or loss. Position data were acquired using radio-tracking devices, and movement-based derivatives were calculated for two time epochs (5 to 2.5 seconds, and 2.5 to zero seconds before the outcome occurred). A decision tree model was trained using these attributes from the first session data, which predicted that when the attacker was moving at ≥ 0.5 m · s^?1 faster than the defender during the early epoch, the probability of an attacker's win was 1.00. Conversely, when the speed difference at that time was below this threshold the probability of a loss was 0.78. Secondary attributes included defender speed in the lateral direction during the early epoch, and angle of attack (i.e., angle between the respective velocity vectors of the attacker and defender) during the late epoch. The model was then used to predict outcomes of one-versus-one contests from the second session (accuracy = 0.643; area under the Receiver Operating Characteristic (ROC) curve = 0.712). Moreover, decision trees provide an intuitive framework for relating spatial-temporal concepts to coaches, and the suitability of decision trees for analysing the features of one-versus-one exchanges are discussed.     

The humanities in English primary schools: struggling to survive

ABSTRACT

This article surveys the state of the humanities in English primary schools drawing on evidence from serving head teachers, current literature and policy documents. The findings suggest that whilst the humanities are highly valued in schools, there are serious challenges which threaten the ‘broad and balanced’ curriculum. It is suggested that a greater focus on spiritual, moral, social and cultural (SMSC) education and engagement with subject associations and alternative learning environments can help to rectify this imbalance. Such an approach recognises looming social, cultural and environmental threats, which have the potential to support children’s psychological health and well-being.     

Cognitive Difficulties in Struggling Comprehenders and Their Relation to Reading Comprehension: A Comparison of Group Selection and Regression-Based Models

ABSTRACT

Difficulties suppressing previously encountered but currently irrelevant information from working memory characterize less skilled comprehenders in studies in which they are matched to skilled comprehenders on word decoding and nonverbal IQ. These “extreme” group designs are associated with several methodological issues. When sample size permits, regression approaches permit a more accurate estimation of effects. Using data for students in Grades 6 through 12 (n = 766), regression techniques assessed the significance and size of the relation of suppression to reading comprehension across the distribution of comprehension skill. After accounting for decoding efficiency and nonverbal IQ, suppression, measured by performance on a verbal proactive interference task, accounted for a small amount of significant unique variance in comprehension (less than 1%). A comparison of suppression in less skilled comprehenders matched to more skilled comprehenders (48 per group) on age, word reading efficiency, and nonverbal IQ did not show significant group differences in suppression. The implications of the findings for theories of reading comprehension and for informing comprehension assessment and intervention are discussed.     

Examining the relationship between perceptions of teaching self-efficacy,school support and teacher and paraeducator burnout in a residential school setting

Despite teacher self-efficacy and burnout’s influence on student outcomes, little research has been conducted on teacher self-efficacy and burnout in residential treatment schools. This study attempts to fill this need by examining the self-efficacy and burnout of teachers and paraeducators in a residential treatment school in the United States. We explore the relationships between educators’ perceptions of school supports and educators’ sense of self-efficacy and burnout Our results revealed that while educators’ perceptions of school supports were not related to educators’ sense of efficacy, there was a significant relationship between educators’ perceptions of school supports and reported levels of burnout. Educators who reported lower levels of school supports had high levels of burnout. We discuss implications for larger studies on this topic and for supporting educator well-being in residential treatment schools.     

When does an opportunity become an opportunity? Unpacking classroom practice through the lens of ecological psychology

Drawing on ecological psychology, this paper considers how student engagement is an accomplishment of the classroom system. Specifically, this paper presents an analysis of two teachers and their students who were using a project-based unit in their mathematics classes. The two teachers used identical curricular materials, but had dramatically different personal histories of teaching and different instructional practices. Our goal is to investigate the role of the teacher in supporting student engagement by considering the kinds of opportunities to learn that were presented by the teacher, and the relationship between those opportunities to learn and the ways their students engaged. Pragmatically, this paper contributes to our understanding of how teachers’ framing of activity significantly impacts the ways that students are likely to engage tasks. Theoretically, this paper highlights the interactional nature of learning, with the goal of clarifying why learning is not simply an individual accomplishment.     

Autism in a Family in China: An investigation and ethical consideration of sibling issues

Having a child with autism in China raises challenges for families. Some are similar to those of families in western countries, but others are unique. This study sought to understand one aspect—the dilemmas of having a second child in a country where having only one child is the norm, and where social welfare services are not developed. This study examined the experiences of one family from the time when the family were considering having a second child through to the time when the younger child was a teenager. The most salient issues were the changing perspectives on the sibling’s role, and the responsibility and future burden of the sibling due to this responsibility. We use three ethical theories as a framework for analysis. The data suggested several benefits of having a second child and the possibilities for promoting opportunities and well-being, and not just responsibility and worry, in the second child. Areas of future research to expand this study are considered.     

Outcomes for Women and Infants Following Assisted Conception: Implications for Perinatal Education,Care, and Support

Assisted conception is becoming an increasingly more common treatment option for women and couples who experience fertility problems. Links have been made in the literature between assisted conception and a greater incidence of pregnancy or birth complications, low birth weight or premature babies, and babies with congenital abnormalities. In addition, evidence suggests that the experience of assisted conception may influence the development of early mothering relationships and impact parenting adjustment. Although this commentary article does not strategically review all available literature, it provides an overview of the health issues that women and families undergoing assisted conception have experienced or may experience. Through raising awareness and promoting discussion of these issues, practitioners will be better equipped to provide informed education and support.