Effect of loading on peak power of the bar, body, and system during power cleans, squats, and jump squats

Nine males (age 24.7 ± 2.1 years, height 175.3 ± 5.5 cm, body mass 80.8 ± 7.2 kg, power clean 1-RM 97.1 ± 6.36 kg, squat 1-RM = 138.3 ± 20.9 kg) participated in this study. On day 1, the participants performed a one-repetition maximum (1-RM) in the power clean and the squat. On days 2, 3, and 4, participants performed the power clean, squat or jump squat. Loading for the power clean ranged from 30% to 90% of the participant's power clean 1-RM and loading for the squat and jump squat ranged from 0% to 90% of the participant's squat 1-RM, all at 10% increments. Peak force, velocity, and power were calculated for the bar, body, and system (bar + body) for all power clean, squat, and jump squat trials. Results indicate that peak power for the bar, body, and system is differentially affected by load and movement pattern. When using the power clean, squat or jump squat for training, the optimal load in each exercise may vary. Throwing athletes or weightlifters may be most concerned with bar power, but jumpers or sprinters may be more concerned with body or system power. Thus, the exercise type and load vary according to the desired stimulus.     

Analyzing Postcrisis Challenges and Strategies Associated With School Shootings: An Application of Discourse of Renewal Theory

In recent years, the need to understand and identify effective data-driven strategies for the communication challenges faced by schools associated with school shootings has become paramount. The current study reports findings from 10 face-to-face interviews conducted with school crisis team members at the P–12 level who experienced school shooting events. The findings, which extend discourse of renewal theory, identify six primary communication-related challenges that districts face postcrisis and offer effective strategies for overcoming these challenges.     

Reading Development in Young Children: Genetic and Environmental Influences

The development of reading skills in typical students is commonly described as a rapid growth across early grades of active reading education, with a slowing down of growth as active instruction tapers. This study examined the extent to which genetics and environments influence these growth rates. Participants were 371 twin pairs, aged approximately 6 through 12, from the Western Reserve Reading Project. Development of word‐level reading, reading comprehension, and rapid naming was examined using genetically sensitive latent quadratic growth curve modeling. Results confirmed the developmental trajectory described in the phenotypic literature. Furthermore, the same shared environmental influences were related to early reading skills and subsequent growth, but genetic influences on these factors were unique.     

"The policy exists but you can't really use it": communication and the structuration of work-family policies

Although work-family benefits are increasingly important organizational policies, limited research addresses the impact of communication on benefit utilization. However, communication is significant because the perceived appropriateness of work-family benefits emerges through interaction. For example, when coworkers complain about "picking up the slack" for those using family leave, their discourse may impact future decisions of other workers regarding whether they utilize the work-family benefits available to them. We apply Giddens' (1984) Structuration Theory to examine organizational members' discursive responses to conditions (and contradictions) present in utilizing work-family benefits in a governmental organization. We argue the daily discursive practices of individuals can either reinforce or undermine formally stated work-family initiatives, and in turn discuss the implications of this "structuration" of policy.     

Learning strategies and study approaches of postsecondary students with dyslexia

The present study describes the self-reported learning strategies and study approaches of college and university students with and without dyslexia and examines the relationship of those characteristics with reading ability. Students with (n = 36) and without (n = 66) dyslexia completed tests measuring reading rate, reading comprehension, reading history, learning strategies, and learning approaches. The results indicated that students without dyslexia obtained significantly higher scores than students with dyslexia in their reported use of selecting main ideas and test taking strategies. Students with dyslexia reported significantly greater use of study aids and time management strategies in comparison to students without dyslexia. Moreover, university students with dyslexia were significantly more likely to report a deep approach to learning in comparison to university students without dyslexia. Reading ability correlated positively with selecting main ideas and test taking strategies and negatively with use of study aids. The authors interpret the learning strategy results as consequences of and compensations for the difficulties that students with dyslexia have in word reading.     

Understanding prosody and morphology in school-age children’s reading

Reading and Writing - We examined the unique contributions of prosodic awareness and morphological awareness to school-aged children’s word reading and reading comprehension. A total of 110...     

Neural Correlates of Risk Processing Among Adolescents: Influences of Parental Monitoring and Household Chaos

Adolescent risky behavior is related to developmental changes in decision‐making processes and their neural correlates. Yet, research investigating how the family environment relates to risk processing in the adolescent brain is limited. In this study, longitudinal data were collected from 167 adolescents (13–15 years, 53% male) who self‐reported household chaos and their parent's monitoring practices, and completed a decision‐making task during functional MRI at Time 1 and Time 2 (1 year apart). Parental knowledge was positively related to insular risk processing only among adolescents in low‐chaos environments at both time points. Results highlight environmental correlates of insular risk processing in the developing brain.     

Self‐assessment and the disadvantaged student: potential for encouraging self‐regulated learning?

The Science Foundation Programme (SFP) at the University of KwaZulu Natal, Pietermaritzburg attempts to address past educational inequalities by providing disadvantaged matriculants with the skills, resources and self‐confidence needed to embark on their tertiary studies. Students entering the Programme typically adopt a surface approach to learning with emphasis being placed on high score achievement which results in a mark‐driven attitude towards assessment. Students also lack the metacognitive skills associated with a deep approach to learning. Within this mark‐driven culture, it is important to attempt to move students away from such a superficial approach to learning and assessment. Worldwide, self‐assessment practice has been gaining recognition, and it has been linked to the adoption of a deep approach to learning; self‐regulated learning and the development of metacognitive skills. In the biology module of the Programme, students are given two essay assignments, tasks that are routinely performed very poorly. In attempt to improve SFP students’ essay writing abilities, a self‐assessment scheme to accompany the essay tasks was instituted, hoping that this would get the students to engage with the assessment criteria. It was intended that students would not only fulfil the requirements of the task better, but also achieve the valuable skill of self‐assessment. The results provide overwhelming evidence that SFP students cannot accurately self‐assess. Their naivety and inexperience in fulfilling assessment criteria was also revealed. Overall, marks awarded by staff were significantly lower than those awarded by students, and there was no evidence to suggest that any one category of students based on academic ability were better able to self‐assess than another. Marker inconsistencies were revealed, but this was shown to have no effect on findings. In spite of these results, a case for pursuing self‐assessment is made and proposals for improving student self‐assessment practice in the SFP are suggested.