Adolescents' satisfaction with school experiences: Relationships with demographics,attachment relationships,and school engagement behavior

This study investigated the relationships among demographics, parent and peer attachment, school satisfaction, and student engagement behavior in a 1‐year longitudinal study of secondary‐school students. Statistically significant cross‐sectional differences in school satisfaction were observed, based on grade, but not on race, gender, or socioeconomic status. Level of school satisfaction did not moderate the relationships between parent and peer satisfaction and negative student engagement behaviors at Time 2 (controlling for Time 1). School satisfaction did account for significant incremental variance across all levels of parent and peer attachment relationships, although predicting a larger proportion of variance for withdrawal behavior than for resistance/aggression behavior. Adolescents' appraisals of their school satisfaction appear to be an independent predictor of their school engagement behaviors, regardless of the quality of their parent or peer attachment relationships. Limitations of the study as well as implications for future research and educational practice are discussed. © 2010 Wiley Periodicals, Inc.     

Evaluation of an intervention to help students avoid unintentional plagiarism by improving their authorial identity

Students with poorly developed authorial identity may be at risk of unintentional plagiarism. An instructional intervention designed specifically to improve authorial identity was delivered to 364 psychology students at three post‐1992 universities in London, UK, and evaluated with before‐and‐after measures of beliefs and attitudes about academic authorship, using the Student Authorship Questionnaire. Changes in questionnaire scores showed that the intervention led to significantly increased confidence in writing, understanding of authorship, knowledge to avoid plagiarism, and top‐down approaches to writing, and significantly decreased bottom‐up and pragmatic approaches to writing. For understanding of authorship, knowledge to avoid plagiarism and pragmatic approaches to writing, significant intervention by year of study interaction effects showed that the greatest improvements were among year one undergraduates. Direct evaluative feedback showed that 86% of students believed the intervention helped them avoid plagiarism and 66% believed it helped them write better assignments. Post‐intervention focus groups revealed changed student understandings about authorial identity and academic writing. The results show that interventions can help students avoid unintentional plagiarism by adopting more authorial roles in their academic writing. Further research could explore other influences on authorial identity, and examine the impact of authorial identity interventions on other outcome indicators.     

Next generation crosscutting themes: Factors that contribute to students' understandings of size and scale

This study examined the degree to which individual differences in students' (N = 232) concepts of size and scale are explained by factors such as students' innate sense of number, out‐of‐school science experiences, exposure to size and scale instruction, gender identities, and racial/ethnic identities. There is increasing emphasis being placed on the use of crosscutting concepts to promote deep learning in science. A multiple linear regression indicated students' racial/ethnic identities, experiences with scale outside of school, and exposure to size and scale instruction significantly added to the prediction model. Results from this study can both inform the movement toward incorporating crosscutting concepts into pedagogy as well as inform educators, administrators, and other stakeholders of the factors that may shape students' understanding of the cross‐cutting concept of scale, proportion, and quantity.     

The language variable in educational research: an exploration of researcher positionality,translation, and interpretation

In qualitative educational research, the languages spoken by the participants and the researchers can greatly impact the quality of the data collected. This paper will explore the advantages and disadvantages of being an insider researcher by virtue of speaking the same language(s) as the participants. Whether the researcher is a linguistic insider or outsider, he or she will need to make important decisions with regard to translation and interpretation when conducting cross-language research. Such linguistic decisions can also impact the quality of the data collected and the trustworthiness of the research. The advantages and disadvantages of translation and interpretation in qualitative educational research will be explored. This paper offers researchers and students suggestions for conducting cross-language educational research in an ethical and transparent manner.     

Running economy,mechanics, and marathon racing shoes

ABSTRACT

The choice of marathon racing shoes can greatly affect performance. The purpose of this study is to metabolically and mechanically compare the consumer version of the Nike Vaporfly 4% shoe to two other popular marathon shoes, and determine differences in running economy. Nineteen subjects performed two 5-minute trials at 4.44m/s wearing the Adidas Adios Boost (AB), Nike Zoom Streak (ZS), and Nike Vaporfly 4% (VP) in random order. Oxygen uptake was recorded during minutes 3–5 and averaged across both shoe trials. On a second day, subjects wore reflective markers, and performed a 3-minute trial in each shoe. Motion and force data were collected over the final 30 seconds of each trial. VP oxygen uptake was 2.8% and 1.9% lower than the AB and ZS. Stride length, plantar flexion velocity, and center of mass vertical oscillation were significantly different in the VP. The percent benefit of the VP over AB shoe was predicted by subject ground time. These results indicate that use of the VP shoe results in improved running economy, partially due to differences in running mechanics. Subject variation in running economy improvement is only partially explained by variation in ground time.     

The microstructure of practice activities engaged in by elite and recreational youth cricket players

Abstract

Practice plays an important role in skill acquisition, although not all practice is of equal quality. We examined the types of team practice activities in four groups of youth cricket players. The groups were recreational- and elite-children (9 to 12 years of age) and recreational- and elite-adolescent players (13 to 17 years of age). Time motion analysis recorded the duration in two types of practice activities, namely, Training Form and Playing Form. Training Form is mainly drill-type activities, whereas Playing Form is mainly games-based activities. Training Form activity is thought to contain fewer opportunities to develop the perceptual, cognitive and motor skills required for successful performance in competition when compared to Playing Form. Session duration was a mean value of 95, s?=?29?min. All players combined spent 69% of session time in Training Form activity and 19% in Playing Form, with the remaining percentage of time spent in transition between activities. Recreational-children spent around half of their time in Playing Form activity, whereas both elite and adolescent groups spent little or no time in this activity. Findings from this research highlight a gap between research and practice that may not be optimal for skill acquisition.     

Age-Related Differences in Muscular Strength and Muscular Endurance among Female Masters Swimmers

Abstract

The purpose of this study was to examine age-related differences in muscular strength and muscular endurance among 73 female masters swimmers aged 24 to 71 years. Each subject was assessed on measures of body size, grip strength, peak isokinetic torque of shoulder and knee flexion and extension, and endurance of shoulder and knee movements. Although swim training appears to have resulted in higher strength values for these swimmers than for less active women, an age-related decline in muscular strength values was nevertheless apparent. The results fail to reveal a similar age-related trend for muscular endurance, suggesting that swim training influences muscular endurance more than muscular strength among adult women.