Extending validity evidence for multidimensional measures of coaching competency     

Myers ND  Wolfe EW  Maier KS  Feltz DL  Reckase MD 《Research quarterly for exercise and sport》2006,77(4):451-463

This study extended validity evidence for multidimensional measures of coaching competency derived from the Coaching Competency Scale (CCS; Myers, Feltz, Maier, Wolfe, & Reckase, 2006) by examining use of the original rating scale structure and testing how measures related to satisfaction with the head coach within teams and between teams. Motivation, game strategy, technique, and character building comprised the dimensions of coaching competency. Data were collected from athletes (N = 585) nested within intercollegiate men's (g = 8) and women's (g = 13) soccer and women's ice hockey (g = 11) teams (G = 32). Validity concerns were observed for the original rating scale structure and the predicted positive relationship between motivation competency and satisfaction with the coach between teams. Validity evidence was offered for a condensed post hoc rating scale and the predicted relationship between motivation competency and satisfaction with the coach within teams.  相似文献   

Applying LDA Topic Modeling in Communication Research: Toward a Valid and Reliable Methodology     

Daniel Maier  A. Waldherr  P. Miltner  G. Wiedemann  A. Niekler  A. Keinert 《Communication methods and measures》2018,12(2-3):93-118

ABSTRACT

Latent Dirichlet allocation (LDA) topic models are increasingly being used in communication research. Yet, questions regarding reliability and validity of the approach have received little attention thus far. In applying LDA to textual data, researchers need to tackle at least four major challenges that affect these criteria: (a) appropriate pre-processing of the text collection; (b) adequate selection of model parameters, including the number of topics to be generated; (c) evaluation of the model’s reliability; and (d) the process of validly interpreting the resulting topics. We review the research literature dealing with these questions and propose a methodology that approaches these challenges. Our overall goal is to make LDA topic modeling more accessible to communication researchers and to ensure compliance with disciplinary standards. Consequently, we develop a brief hands-on user guide for applying LDA topic modeling. We demonstrate the value of our approach with empirical data from an ongoing research project.  相似文献   

Identification of temporal factors related to shot performance for indoor recurve archery     

Andrew J. Callaway  Johanna Wiedlack  Mario Heller 《Journal of sports sciences》2017,35(12):1142-1147

The purpose of this study was to investigate the temporal phases of the archery shot cycle that distinguish the arrows distance from centre, in an attempt to understand critical factors that affect performance. Fifteen archers of varying ability each performed 30 shots at 18 m. Fourteen potential predictor variables were measured for statistical modelling by stepwise multiple linear regression. The results show that pre-shot time (pre-performance routine), follow-through time (post-performance routine), aiming time, speed of the arrow and the %variation in clicker-release time, account for 7.7% of the variation in predicting shot performance. The results have implications for practice demonstrating factors that coaches should focus on to develop their athletes. Further work on pre-, but more importantly, post-performance routines are needed generally within sport research as they are lacking and have been shown to be important contributing factors in a number of sports.  相似文献   

Performance differences when using 26- and 29-inch-wheel bikes in Swiss National Team cross-country mountain bikers     

Thomas Steiner  Beat Müller  Thomas Maier  Jon Peter Wehrlin 《Journal of sports sciences》2016,34(15):1438-1444

The purpose of this study was to analyse the effect of bike type – the 26-inch-wheel bike (26“ bike) and the 29-inch-wheel bike (29“ bike) – on performance in elite mountain bikers. Ten Swiss National Team athletes (seven males, three females) completed six trials with individual start on a simulated cross-country course with 35 min of active recovery between trials (three trials on a 26“ bike and three trials on a 29“ bike, alternate order, randomised start-bike). The course consisted of two separate sections expected to favour either the 29“ bike (section A) or the 26“ bike (section B). For each trial performance, power output, cadence and heart rate were recorded and athletes’ experiences were documented. Mean overall performance (time: 304 ± 27 s vs. 311 ± 29 s; P < 0.01) and performance in sections A (P < 0.001) and B (P < 0.05) were better when using the 29“ bike. No significant differences were observed for power output, cadence or heart rate. Athletes rated the 29“ bike as better for performance in general, passing obstacles and traction. The 29“ bike supports superior performance for elite mountain bikers, even on sections supposed to favour the 26“ bike.  相似文献   

Dopingberichterstattung in den Medien     

Johanna Schirm  Henk Erik Meier 《Sportwissenschaft》2016,46(3):143-161

This contribution reviews existing research on media coverage of doping in Germany. Based on a keyword search, 22 works were identified. The review aims to provide a survey of the state of the art in terms of questions addressed, methods and results as well as blind spots and methodological deficits. Moreover, directions for future research are outlined. Although research is characterized by substantial methodological heterogeneity, central results can be presented following the influential approach of Bette and Schimank. In accordance with their ideas media coverage of doping is characterized by scandalization, personalization and moralization. However, shortfalls of theoretical perspective and methodological shortcomings are noted. These deficits serve as an inspiration for future research.  相似文献   

Degrees of value: comparing the contextual complexities of UK transnational education in Malaysia and Hong Kong     

I Lin Sin  Maggi W. H. Leung  Johanna L. Waters 《Compare》2019,49(1):132-148

This paper reveals the complex diversity that underpins ostensibly similar transnational education programmes (TNE), through a comparison of UK TNE in Malaysia and Hong Kong. It draws on data from two different yet cognate studies on the role of UK universities in delivering higher education in Asia. Some fine-grained and informative differences between the ways in which ‘value’ in TNE is constructed in different host contexts is revealed. The paper brings to light the ‘voices’ of TNE students and graduates, which are very seldom heard. The arguments adapt and extend the concepts of education as a positional good, and as cultural capital. For various instrumental, intrinsic and personal reasons the authors discuss in detail, UK TNE is more highly valued in Malaysia than in Hong Kong. The paper makes a wider contribution to knowledge on the changing landscape of international higher education and the impact on social and personal (dis)advantage.  相似文献   

Enhancing quality with a research-based student feedback instrument: a comparison of veterinary students’ learning experiences in two culturally different European universities     

Mirja Ruohoniemi  Monica Forni  Johanna Mikkonen  Anna Parpala 《Quality in Higher Education》2017,23(3):249-263

This paper explores the value of a research-based student inventory from the quality assurance point of view in two culturally different European higher education institutions for veterinary education. Perceived heavy workload is a well-known problem in veterinary studies and is a challenge to the quality of learning. First- and third-year students in both institutions responded to an inventory consisting of items regarding their approaches to learning, self-efficacy, study workload and the teaching-learning environment. There were differences in students’ approaches to learning and perceived workload between the two institutions. In both contexts, the strongest predictor of the workload turned out to be the surface approach to learning. Self-efficacy showed a positive correlation with the deep approach to learning and organised studying. The strengths of the teaching-learning environment varied between the institutions. Moreover, the present study discusses how the gained information could be used in improving the teaching-learning environment and students’ learning.  相似文献   

Tracing unique trajectories of participation for a ‘girl with ADHD’: from ‘unwilling student’ to ‘agentive learner’     

Ann-Carita Evaldsson  Johanna Svahn 《Emotional and Behavioural Difficulties》2019,24(3):254-272

ABSTRACT

The overall aim of this study is to explore how individual children with long-term school difficulties follow unique ‘trajectories of participation’ in special educational needs settings, sometimes in unexpected ways, and how this contributes to alternative forms of identification and processes of learning. The data draws on long-term video-ethnographic work, tracing trajectories of participation during the course of a school year for an individual girl with an ADHD diagnosis who is a newcomer to a special support school in Sweden. We use a multi-layered theoretical and methodological framework to learning, identities and participation as situated practices to explore how the focal girl, through her everyday participation in classroom contexts structured to amplify the student’s capabilities, gradually moves from an ‘unwilling student’ to an ‘agentive learner’. Through a multimodal interactional analysis, we demonstrate how the focal girl’s actions and the teacher’s scaffolding responses are interactionally organised, and the emotional and relational dimensions in the creation of participation frameworks for learning. It is argued that the student’s agency and emerging emotional engagement in school-based learning are intimately linked to the pursuit of building long-term learning relationships based on mutual trust.  相似文献   

Reliability and Validity of Real-Time Response Measurement: a Comparison of Two Studies of a Televised Debate in Germany   总被引：1，自引：0，他引：1  

Maier  Jurgen; Maurer  Marcus; Reinemann  Carsten; Faas  Thorsten 《Int. Journal of Public Opinion Research》2007,19(1):53-73

This paper investigates the reliability and validity of real-timeresponse measurements (RTR). It is based on a comparison oftwo quasi-experimental studies independently conducted on thesecond televised debate of the two major candidates for chancellorin the 2002 German federal election campaign. Participants inBamberg and Mainz—two mid-sized German cities—followedthe debate on a large-scale screen. The viewers’ immediatereactions to the candidates were measured in real-time. In termsof technicalities and substance, both quasi-experiments differedin several important respects. For example, the system usedin Mainz was based on a control unit with a 7-point scale andyielded one merged metric dimension for both candidates. TheBamberg system measured positive and negative impressions ofthe candidates independently, yielding categorical data. Despitethese operational differences, the results show that both methodsrender reliable results that also meet the criteria of face,construct, and criterion validity. Hence, RTR measurements providevaluable, unique insights into subjective immediate reactionsto candidates in televised debates and help to explain post-debateperceptions and attitudes. Received for publication March 23, 2005. Revision received December 14, 2005.  相似文献   

Advances in urinary protein biomarkers for urogenital and non-urogenital pathologies     

Johanna Pedroza-Díaz  Sarah R?thlisberger 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2015,25(1):22-35

The discovery of protein biomarkers that reflect the biological state of the body is of vital importance to disease management. Urine is an ideal source of biomarkers that provides a non-invasive approach to diagnosis, prognosis and prediction of diseases. Consequently, the study of the human urinary proteome has increased dramatically over the last 10 years, with many studies being published. This review focuses on urinary protein biomarkers that have shown potential, in initial studies, for diseases affecting the urogenital tract, specifically chronic kidney disease and prostate cancer, as well as other non-urogenital pathologies such as breast cancer, diabetes, atherosclerosis and osteoarthritis. PubMed was searched for peer-reviewed literature on the subject, published in the last 10 years. The keywords used were “urine, biomarker, protein, and/or prostate cancer/breast cancer/chronic kidney disease/diabetes/atherosclerosis/osteoarthritis”. Original studies on the subject, as well as a small number of reviews, were analysed including the strengths and weaknesses, and we summarized the performance of biomarkers that demonstrated potential. One of the biggest challenges found is that biomarkers are often shared by several pathologies so are not specific to one disease. Therefore, the trend is shifting towards implementing a panel of biomarkers, which may increase specificity. Although there have been many advances in urinary proteomics, these have not resulted in similar advancements in clinical practice due to high costs and the lack of large data sets. In order to translate these potential biomarkers to clinical practice, vigorous validation is needed, with input from industry or large collaborative studies.Key words: urine, protein, biomarker  相似文献