Information-governing dynamics of attacker–defender interactions in youth rugby union

Abstract

Previous work on dynamics of interpersonal interactions in 1 vs. 1 sub-phases of basketball has identified changes in interpersonal distance between an attacker and defender as a potential control parameter for influencing organizational states of attacker–defender dyads. Other studies have reported the constraining effect of relative velocity between an attacker and defender in 1 vs. 1 dyads. To evaluate the relationship between these candidate control parameters, we compared the impact of both interpersonal distance and relative velocity on the pattern-forming dynamics of attacker–defender dyads in the sport of rugby union. Results revealed that when interpersonal distance achieved a critical value of less than 4 m, and relative velocity values increased or were maintained above 1 m · s^?1, a successful outcome (i.e. clean attempt) for an attacker was predicted. Alternatively, when values of relative velocity suddenly decreased below this threshold, at the same critical value of interpersonal distance, a successful outcome for the defender was predicted. Data demonstrated how the coupling of these two potential, nested control parameters moved the dyadic system to phase transitions, characterized as a try or a tackle. Observations suggested that relative velocity increased its influence on the organization of attacker–defender dyads in rugby union over time as spatial proximity to the try line increased.     

The development of source evaluation skills during adolescence: exploring different levels of source processing and their relationships (El desarrollo de las habilidades de evaluación de las fuentes durante la adolescencia: una exploración de los distintos niveles de procesamiento de las fuentes y sus relaciones)

Abstract

This study examines the development of source evaluation skills in four groups of students from 10 to 19 years of age. We designed a set of tasks based on a distinction between three components of source evaluation: the identification of source parameters; the evaluation of source features such as the source’s competence or benevolence under explicit instructions; and the use of source features in assessing a document’s relevance with respect to a given task. This inventory was administered to 245 teenagers in grades 5, 7 and 9 and to undergraduate students. All types of source evaluation skills developed throughout adolescence, with some of them remaining suboptimal for older readers. Furthermore, we found weak relationships between students’ identification of source parameters and their use of source features in the absence of any specific prompt. Finally, source evaluation tasks were weakly related to teenagers’ word reading skills. Taken together, these results document teenagers’ acquisition of source evaluation skills and warrant a distinction between readers’ ability to comprehend source features and to use these features when assessing information quality.     

Is accreditation ‘on the right track’? The views of Portuguese academics

In many countries, quality assurance systems rely on study programme accreditation. As with all quality assurance mechanisms, accreditation should also be continuously improved in order to maintain its relevance as a promoter of study programme quality. A way to move accreditation forward is by taking into account academics’ views, interests and needs about the process, since their support for it is paramount for its success and effectiveness. This paper analyses Portuguese academics’ knowledge and views on accreditation with the aim of understanding if the process is being supported and is on the right route for being effective. It is based on the analysis of 1484 academics’ answers to a questionnaire distributed in 16 higher education institutions. This analysis reveals a moderately positive attitude of academics towards accreditation, reflected in an only moderate knowledge of the process as well as in a mild agreement with its characteristics and implementation features. This suggests that there is room for improvement to bring this quality assurance mechanism closer to academics’ expectations and needs and therefore to improve accreditation’s effectiveness.

     

Analysis and evaluation of lecturers’ activity in Learning Management Systems: Subjective and objective perceptions

Learning Management Systems (LMS) have become the principal resource for the distribution of educational material and collaboration among lecturers and students in Higher Education. The potential of these platforms does not limit to a simple manager of contents, but they also offer a wide range of tools that support the development of different methodologies according to the learning modality, namely on-campus, blended or online. This work analyzes the use of LMS and the interactions with their different tools from the lecturers’ point of view, in order to detect possible incidents, check the tools’ utility and evaluate their complexity. All these metrics represent valuable information to the Degree Coordinators, if they are presented in a suitable manner, to detect and resolve deficiencies in the methodology. For the analysis of the teaching activity two methods are employed: (1) surveys, to measure the subjective perception of lecturers when using LMS tools; and (2) visual analysis of the real lecturer’s activity through OnlineData, a graphical analytic tool developed as part of our work to monitor LMS tools metrics. The results of both methods show differences among the perceived self-usage and actual usage, especially for the e-learning methodologies     

Early Childhood Services in Ireland

This paper gives background information on early childhood services in Ireland and presents the results of a survey of the preschool experiences of 1065 children. The results of the survey suggest that the majority of children experienced some form of early childhood service before starting school. The most common service was a playgroup although a significant proportion of the children had experienced home‐based care with a relative or family day care provider. The implications of the findings for the development of a policy on early childhood services are discussed.     

Impact of peer mediation programmes to prevent bullying behaviours in secondary schools / El impacto de los programas de mediación entre iguales para prevenir conductas de acoso escolar en los centros de secundaria

The aim of the study was to determine the impact of peer mediation programmes at a secondary school, as compared to another centre that did not have any such programme. The impact would be evaluated by means of three levels of variables: pro-victim attitudes, the roles adopted by the youngsters and the school climate (this last item was analysed from two perspectives: that of the pupils and that of the teachers). In order to attain this goal, students from 12 to 14 years old (N = 323) and 17 teacher-tutors were administered different questionnaires in Time 1 (baseline, prior to intervention) and Time 2 (after programme intervention). Results highlight the validity of peer mediation programmes when it comes to fostering pro-victim attitudes, preventing the increase of negative roles and improving the school climate.     

Pedro Gutiérrez Bueno’s Textbooks: Audiences, Teaching Practices and Chemical Revolution

Pedro Gutiérrez Bueno wrote two editions of a chemistry textbook between 1788 and 1802. The paper offers a comparative view of both editions taking into account Gutiérrez Bueno’s biography, his intended audience and the changes related to the so-called chemical revolution. Some conclusions are at odds with common images about scientific revolutions and the role of textbooks in science. The analysis aims to shed some light on the multiple historical forces shaping textbooks and the way in which scientific change is assimilated by their writers. This research was partially supported by the program BHA2002-04611-CO3-02     

First‐Generation Undergraduate Students' Social Support,Depression, and Life Satisfaction

First‐generation undergraduate students face challenging cross‐socioeconomic cultural transitions into college life. The authors compared first‐ and non‐first‐generation undergraduate students’ social support, posttraumatic stress, depression symptoms, and life satisfaction. First‐generation participants reported less social support from family and friends, more single‐event traumatic stress, less life satisfaction, and marginally more depression symptomatology than non‐first‐generation participants, but significant generation–gender interactions showed first‐generation women doing worse and first‐generation men doing better than others.