Lung Volumes and Maximal Respiratory Pressures in Collegiate Swimmers and Runners

Abstract

To determine whether respiratory muscle strength is related to pulmonary volume differences in athletes and nonathletes, 11 intercollegiate female swimmers, 11 female cross-country runners, and two nonathletic control groups, matched to the athletes in height and age, were evaluated for pulmonary parameters including maximal inspiratory pressure (P_lmax) and maximal expiratory pressure (P_Emax). Swimmers exhibited larger (p < .05) vital capacities (VC), residual lung volumes (RV), inspiratory capacities (IC), and functional residual capacities (FRC) than both the runners or the controls but no difference (p > .05) in either P_lmax or inspiratory flow (FIV_25%-75%). Timed expiratory volumes (FEV Q.5 m and FEV_1.0 were significantly (p < .05) lower in the swimmers than in the controls. These data suggest that an adaptational growth may be responsible, in part, for the augmented static lung volumes demonstrated in swimmers     

Assessing the Life Science Knowledge of Students and Teachers Represented by the K–8 National Science Standards

We report on the development of an item test bank and associated instruments based on the National Research Council (NRC) K–8 life sciences content standards. Utilizing hundreds of studies in the science education research literature on student misconceptions, we constructed 476 unique multiple-choice items that measure the degree to which test takers hold either a misconception or an accepted scientific view. Tested nationally with 30,594 students, following their study of life science, and their 353 teachers, these items reveal a range of interesting results, particularly student difficulties in mastering the NRC standards. Teachers also answered test items and demonstrated a high level of subject matter knowledge reflecting the standards of the grade level at which they teach, but exhibiting few misconceptions of their own. In addition, teachers predicted the difficulty of each item for their students and which of the wrong answers would be the most popular. Teachers were found to generally overestimate their own students’ performance and to have a high level of awareness of the particular misconceptions that their students hold on the K–4 standards, but a low level of awareness of misconceptions related to the 5–8 standards.     

Discovering Plate Boundaries in Data-integrated Environments: Preservice Teachers' Conceptualization and Implementation of Scientific Practices

Drawn from the norms and rules of their fields, scientists use variety of practices, such as asking questions and arguing based on evidence, to engage in research that will contribute to our understanding of Earth and beyond. In this study, we explore how preservice teachers' learn to teach scientific practices while teaching plate tectonic theory. In particular, our aim is to observe which scientific practices preservice teachers use while teaching an earth science unit, how do they integrate these practices into their lessons, and what challenges do they face during their first time teaching of an earth science content area integrated with scientific practices. The study is designed as a qualitative, exploratory case study of seven preservice teachers while they were learning to teach plate tectonic theory to a group of middle school students. The data were driven from the video records and artifacts of the preservice teachers' learning and teaching processes as well as written reflections on the teaching. Intertextual discourse analysis was used to understand what scientific practices preservice teachers choose to integrate into their teaching experience. Our results showed that preservice teachers chose to focus on four aspects of scientific practices: (1) employing historical understanding of how the theory emerged, (2) encouraging the use of evidence to build up a theory, (3) observation and interpretation of data maps, and (4) collaborative practices in making up the theory. For each of these practices, we also looked at the common challenges faced by preservice teachers by using constant comparative analysis. We observed the practices that preservice teachers decided to use and the challenges they faced, which were determined by what might have come as in their personal history as learners. Therefore, in order to strengthen preservice teachers' background, college courses should be arranged to teach important scientific ideas through scientific practices. In addition, such practices should also reflect the authentic practices of earth scientists such as use of historical record and differentiating observation versus interpretation.     

Nanotechnology and Nanoscale Science: Educational challenges

Nanotechnology has been touted as the next ‘industrial revolution’ of our modern age. In order for successful research, development, and social discourses to take place in this field, education research is needed to inform the development of standards, course development, and workforce preparation. In addition, there is a growing need to educate citizens and students about risks, benefits, and social and ethical issues related to nanotechnology. This position paper describes the advancements that have been made in nanoscale science and nanotechnology, and the challenges that exist to educate students and the public about critical nanoscience concepts. This paper reviews the current research on nanotechnology education including curricula, educational programs, informal education, and teacher education. Furthermore, the unique risks, benefits and ethics of these unusual technological applications are described in relation to nanoeducation goals. Finally, we outline needed future research in the areas of nanoscience content, standards and curricula, nanoscience pedagogy, teacher education, and the risks, benefits, and social and ethical dimensions for education in this emerging field.     

Asian International Students’ Willingness to Seek Counseling: A Mixed-Methods Study

Using a mixed-methods survey design that was predominantly quantitative, this study explored Asian international students’ willingness to seek counseling. Participants were 177 Asian international students recruited from a U.S. Midwestern University. After controlling for attitudes toward psychological help-seeking and past counseling experience, academic stress was significantly and positively related to willingness to seek counseling for academic problems. Qualitative data were also collected using one open-ended question in the survey: “What comes into your mind when you think about ‘counseling’ or ‘mental health counseling’?” The qualitative analyses revealed positive perceptions of counseling as well as a personal reluctance to seek counseling.     

Researching Public Pension Plans

Over the past two decades public pension plans have garnered major headlines due to large investment losses. With increased attention on pension fund investments, information professionals must be able to help researchers find public pension data on asset values, asset allocations, and investment performance. This article will help researchers understand the types of data available to analyze pension fund investment returns and asset allocations, to compare changes in sector allocations and equity holdings, and to assess changes in pension investment performance relative to key benchmarks. Additionally, this article will provide information for obtaining current and historical investment returns and holdings.     

Short lesson plan associated with increased acceptance of evolutionary theory and potential change in three alternate conceptions of macroevolution in undergraduate students

Undergraduates commonly harbor alternate conceptions about evolutionary biology; these alternate conceptions often persist, even after intensive instruction, and may influence acceptance of evolution. We interviewed undergraduates to explore their alternate conceptions about macroevolutionary patterns and designed a 2-h lesson plan to present evidence that life has evolved. We identified three alternate conceptions during our interviews: that newly derived traits would be more widespread in extant species than would be ancestral traits, that evolution proceeds solely by anagenesis, and that lineages must become more complex over time. We also attempted to measure changes in the alternate conceptions and levels of acceptance of evolutionary theory in biology majors and nonmajors after exposure to the lesson plan. The instrument used to assess understanding had flaws, but our results are suggestive of mixed effects: we found a reduction in the first alternate conception, no change in the second, and reinforcement of the third. We found a small, but significant, increase in undergraduate acceptance of evolutionary theory in two trials of the lesson plan (Cohen's d effect sizes of 0.51 and 0.19). These mixed results offer guidance on how to improve the lesson and show the potential of instructional approaches for influencing acceptance of evolution.     

Does an activity-based learning strategy improve preschool children's memory for narrative passages?

Contemporary embodiment theory's indexical hypothesis predicts that engaging in text-relevant activity while listening to a story will: (1) enhance memory for enacted story content; and, (2) result in relatively greater memory enhancement for enacted atypical events than for typical ones (16 and 17). To date, indexical hypothesis predictions and applications have been examined only with adults and elementary school-aged children. The present study extended previous research by comparing an activity-based listening strategy to a listening-only strategy with 56 preschool children. The first hypothesis was supported in that children in the activity-based condition recalled more story actions than children in the listening-only condition. At the same time, this effect was relatively greater for children who were initially better at remembering story content than for initially poorer story rememberers. Consistent with previous research findings, no statistical differences between conditions were observed on memory for nonaction story content. The second hypothesis – that children in the activity-based strategy would exhibit comparatively greater memory enhancement for atypical story events relative to typical ones – was not supported. Theoretical and practical implications of the findings are discussed.     

Knowledge Management Systems: On the promise and actual forms of information technologies

As globalisation expands, the twin forces of the market and information technologies are pervading the educational arena. One instance is the Knowledge Management System (KMS), which proposes to produce easily retrievable materials via the Internet and hypertext. KMS attempts to be more than a mere data bank, for it seeks to provide highly selected and targeted knowledge. For its implementation, KMS depends on a manager to determine what constitutes 'relevant' and 'best' evidence. Since powerful institutions in the North are the most likely to develop KMS, this innovation augurs further dominance by the North, with detrimental consequences for the South in the selection of research that fits ideological and methodological paradigms preferred by such institutions. Further, the notions of 'just-in-time' knowledge and 'best practices' risk confusing what is bound to become segmented and decontextualised information with what should be knowledge (and wisdom) appropriate for educational decision-making.