Classification of playing position in elite junior Australian football using technical skill indicators

?In team sport, classifying playing position based on a players’ expressed skill sets can provide a guide to talent identification by enabling the recognition of performance attributes relative to playing position. Here, elite junior Australian football players were a priori classified into 1 of 4 common playing positions; forward, midfield, defence, and ruck. Three analysis approaches were used to assess the extent to which 12 in-game skill performance indicators could classify playing position. These were a linear discriminant analysis (LDA), random forest, and a PART decision list. The LDA produced classification accuracy of 56.8%, with class errors ranging from 19.6% (midfielders) to 75.0% (ruck). The random forest model performed at a slightly worse level (51.62%), with class errors ranging from 27.8% (midfielders) to 100% (ruck). The decision list revealed 6 rules capable of classifying playing position at accuracy of 70.1%, with class errors ranging from 14.4% (midfielders) to 100% (ruck). Although the PART decision list produced the greatest relative classification accuracy, the technical skill indicators reported were generally unable to accurately classify players according to their position using the 3 analysis approaches. This player homogeneity may complicate recruitment by constraining talent recruiter’s ability to objectively recognise distinctive positional attributes.     

Early event‐related potentials differences in orthographic processing of native and non‐native Chinese readers

Efficient Chinese character reading requires rapid access to orthographic representations of radical form and position. This study identified the temporal sequence of radical form, radical position and lexicality processing in adult first language (L1) and intermediate second language (L2) Chinese readers. Event‐related potential responses in a one‐back repetition detection task were submitted to linear mixed‐effects models. Violation of radical position produced P100 effects that were left‐lateralized for L1 readers and right‐lateralized for L2 readers. When controlling for P100 activation, radical position produced a left‐lateralized effect at the N170 for L2 readers but no additional activities for L1 readers. Radical form effects were found at the N270 for L1 readers, where radical form violation produced larger N270. Results suggested that radical representations are position‐specific in initial orthographic processing for both groups. However, different temporal dynamics and topographic distributions suggested divergent radical processing for native versus non‐native readers from the beginning.     

Drawing and extrusion of superplastic metals through cone-shaped dies

Closed-form solutions are obtained for the stress and die pressure distributions, time and flow rates for drawing and extruding superplastic cylinders through a cone-shaped die with Coulomb friction. Numerical examples are presented graphically and the possible existence of a maximum limit for area reduction in the drawing process is pointed out and discussed.     

Arts education and creativity enhancement in young children in Hong Kong

The present study aimed at assessing Hong Kong young children’s gains in creativity and their teachers’ application of arts education after a one-year artists-teachers collaborative arts education project that involves various art forms (i.e. drama, visual arts and integrated). Participants included 790 young children, 217 parents and 65 teachers in seven kindergartens and nurseries. Measures included the Test for Creative Thinking–Drawing Production, Story-Telling Test (STT), the subscales of parent-rated creativity, communication and motivational characteristics, and the adapted Scale of Application of Arts in the Classroom. Among the three art forms, children in the visual arts group demonstrated highest gains in verbal creativity as evaluated by the STT. Based on parents’ report, there were significant differences in children’s communication characteristics across the three art forms. Significant differences across art forms were also found in teachers’ confidence in teaching arts to 3–4?years old and their perception of arts for arts sake. Both teachers and students take advantage of the professional and artistic input and guidance of practising artists in arts appreciation and production. Implications and limitations were discussed.     

Development and validation of the groupwork skills questionnaire (GSQ) for higher education

The aim of the present study was to develop and provide psychometric evidence in support of the groupwork skills questionnaire (GSQ) for measuring task and interpersonal groupwork skills. A 46-item version of the GSQ was initially completed by 672 university students. The number of items was reduced to 15 following exploratory factor analyses, and a two-factor model consisting of task and interpersonal groupwork skills was revealed. Confirmatory factor analyses with model re-specification on new data (n = 275 students) established that the best fitting model consisted of 10 items and the same two factors (task and interpersonal). Concurrent validity of the GSQ was then determined with 145 participants by demonstrating significant relationships (p < 0.05) with attitudes towards groupwork and groupwork self-efficacy. Test–retest reliability was examined over a one-week interval. Overall, the GSQ demonstrates good validity and reliability, and has potential for both research and pedagogical application.     

Reading aloud in Lewisham: an exploration of adult reading‐aloud practices

This paper analyses initial findings of a qualitative pilot study of the reading‐aloud practices of 17 adults in the London Borough of Lewisham. Although the dominant contemporary image of reading is that of a silent activity and within literacy provision it is frequently assumed that reading aloud is not a ‘natural’ ‘real life’ adult practice, anecdote suggests that adults do indeed read aloud, but these practices are overwhelmingly undocumented. This study is the first stage in developing a better understanding of contemporary adult reading‐aloud practices. Semi‐structured interviews were used to ask adults whether, what, where, how and why they read aloud. Initial findings reveal the ubiquitous nature of reading aloud in adult life, across a range of life domains (spiritual life, family life, work and learning) and for different self‐selected purposes (to memorise, to understand, to write and for fellowship). Initial findings reinforce the importance of expanding our definitions and conceptualisations of reading to recognise the diversity and changing nature of real life practices, and suggest implications for our understanding of the role of reading in adult life, for literacy education and for future research.