‘White men can’t jump in a black basketball game?’ An exploratory investigation of implicit strategies of outgroup discrimination

Examining the ‘natural’ athlete myth and utilizing the recent literature on cultural/social factors in athleticism and basketball, this study through survey research examines the influence of stereotypes on the impression formation of basketball players. The primary research question is to determine from a group of students the attitudes of basketball players in terms of how they evaluate white and black players in basketball. The purpose is to identify participants’ perceptions and their appreciation as to whether or not black are superior to white basketball players. The theoretical framework employed is articulated around the theory of social categorization and racial stereotypes already observed in sports. In an initial qualitative phase, the results show that stereotypical representations exert an influence on the skills associated with basketball players depending on the colour of their skin, which is reflected in the use of adjectives specific to each of the categories of black and white. In a second quantitative phase, whereas a more favourable view of black basketball players might have been attributable to positive discrimination as per the anti-racist norm, the results show the activation of a bias towards favouring one’s own group. Once all of the initial adjectives have been expressed, the targets behave in the expected way in terms of the laws of social categorization i.e. they have a more positive view of the members of their own group (the Whites) than of the other group (the Blacks) as adjectives are cited for describing skills.     

Anthropogenic emission is the main contributor to the rise of atmospheric methane during 1993–2017

Atmospheric methane (CH₄) concentrations have shown a puzzling resumption in growth since 2007 following a period of stabilization from 2000 to 2006. Multiple hypotheses have been proposed to explain the temporal variations in CH₄ growth, and attribute the rise of atmospheric CH₄ either to increases in emissions from fossil fuel activities, agriculture and natural wetlands, or to a decrease in the atmospheric chemical sink. Here, we use a comprehensive ensemble of CH₄ source estimates and isotopic δ¹³C-CH₄ source signature data to show that the resumption of CH₄ growth is most likely due to increased anthropogenic emissions. Our emission scenarios that have the fewest biases with respect to isotopic composition suggest that the agriculture, landfill and waste sectors were responsible for 53 ± 13% of the renewed growth over the period 2007–2017 compared to 2000–2006; industrial fossil fuel sources explained an additional 34 ± 24%, and wetland sources contributed the least at 13 ± 9%. The hypothesis that a large increase in emissions from natural wetlands drove the decrease in atmospheric δ¹³C-CH₄ values cannot be reconciled with current process-based wetland CH₄ models. This finding suggests the need for increased wetland measurements to better understand the contemporary and future role of wetlands in the rise of atmospheric methane and climate feedback. Our findings highlight the predominant role of anthropogenic activities in driving the growth of atmospheric CH₄ concentrations.     

Ice hockey skating sprints: run to glide mechanics of high calibre male and female athletes

ABSTRACT

The skating acceleration to maximal speed transition (sprint) is an essential skill that involves substantial lower body strength and effective propulsion technique. Coaches and athletes strive to understand this optimal combination to improve performance and reduce injury risk. Hence, the purpose of this study was to compare body centre of mass and lower body kinematic profiles from static start to maximal speed of high calibre male and female ice hockey players on the ice surface. Overall, male and female skaters showed similar centre of mass trajectories, though magnitudes differed. The key performance difference was the male’s greater peak forward skating speed (8.96 ± 0.44 m/s vs the females’ 8.02 ± 0.36 m/s, p < 0.001), which was strongly correlated to peak leg strength (R ² = 0.81). Males generated greater forward acceleration during the initial accelerative steps, but thereafter, both sexes had similar stride-by-stride accelerations up to maximal speed. In terms of technique, males demonstrated greater hip abduction (p = 0.006) and knee flexion (p = 0.026) from ice contact to push off throughout the trials. For coaches and athletes, these findings underscore the importance of leg strength and widely planted running steps during the initial skating technique to achieve maximal skating speed over a 30 m distance.     

Effectiveness of a heritage educational program for the acquisition of oral and written French and Tahitian in French Polynesia

The research examines the effects of a bilingual pedagogical program (French/Tahitian) on the acquisition of oral and written French as well as the Tahitian language itself in primary schools in French Polynesia. 125 children divided into an experimental group (partially schooled in Tahitian for 300 min per week) and a control group (schooled in French) were followed from the second year of kindergarten to Grade 1 and tested on Tahitian and French language competence. The results show that the program appears to have a positive impact on Tahitian proficiency, without any negative effect on learning of French (oral and reading).     

Personal and Situational Factors Influencing Intrinsic Interest of Adolescent Girls in School Physical Education: a structural equation modelling analysis

This study assessed the influence of individual and contextual factors on adolescent girls’ interest in school physical education (PE). Specifically, girls (N = 700) were assessed on: (a), perceptions of their PE class climate, using the Perceived Motivational Climate Scale (PMCS, Cury et al., 1994; (b) dispositional achievement goal orientations, using the French version of the Perception of Success Questionnaire (POSQ, Durand et alM in press; and (c) the interest and competence subscales from the French version of the Intrinsic Motivation Inventory (IMI, Cury et al., 1994a). Structural equation modelling analysis, using LISREL VII, showed an excellent fit with the hypothesised model. Specifically, situational class climate was found to be more important than individual goals in influencing pupil interest in PE. However, perceived competence also influenced interest, as did a mastery goal orientation. Results are discussed in the context of theoretical propositions of goal perspectives theory and practical issues of enhancing adolescent girls’ interest in physical education.     

Teacher–student interaction,empathy and their influence on learning in swimming lessons

The bulk of interest in the role that interaction plays in learning in sport and physical education (PE) has focused on peer interaction at the expense of teacher–student interaction. This article redresses this imbalance in the literature by reporting on a study that inquired into the nature of teacher–student interaction and its effect on learning in PE swimming lessons in a French secondary school. Informed by an enactivist conceptualisation of learning, it emphasises the subjective dynamics of interaction to suggest that patterns of coordination should not be seen as being predetermined and determining student learning but, instead, as forms of engagement that influence, and are influenced by, the dynamics of interaction. In doing so it suggests the pivotal importance of teacher empathy for student learning through interaction in PE.