The EvoDevoCI: A Concept Inventory for Gauging Students’ Understanding of Evolutionary Developmental Biology     

Kathryn E. Perez  Anna Hiatt  Gregory K. Davis  Caleb Trujillo  Donald P. French  Mark Terry  Rebecca M. Price 《CBE life sciences education》2013,12(4):665-675

The American Association for the Advancement of Science 2011 report Vision and Change in Undergraduate Biology Education encourages the teaching of developmental biology as an important part of teaching evolution. Recently, however, we found that biology majors often lack the developmental knowledge needed to understand evolutionary developmental biology, or “evo-devo.” To assist in efforts to improve evo-devo instruction among undergraduate biology majors, we designed a concept inventory (CI) for evolutionary developmental biology, the EvoDevoCI. The CI measures student understanding of six core evo-devo concepts using four scenarios and 11 multiple-choice items, all inspired by authentic scientific examples. Distracters were designed to represent the common conceptual difficulties students have with each evo-devo concept. The tool was validated by experts and administered at four institutions to 1191 students during preliminary (n = 652) and final (n = 539) field trials. We used student responses to evaluate the readability, difficulty, discriminability, validity, and reliability of the EvoDevoCI, which included items ranging in difficulty from 0.22–0.55 and in discriminability from 0.19–0.38. Such measures suggest the EvoDevoCI is an effective tool for assessing student understanding of evo-devo concepts and the prevalence of associated common conceptual difficulties among both novice and advanced undergraduate biology majors.  相似文献   

Comparison of the Validity of Four Fall-Related Psychological Measures in a Community-Based Falls Risk Screening     

Delilah S. Moore  Rebecca Ellis  Maria Kosma  Jennifer M. Fabre  Kevin S. McCarter  Robert H. Wood 《Research quarterly for exercise and sport》2013,84(3):545-554

Abstract

We examined the measurement properties of fall-related psychological instruments with a sample of 133 older adults (M age = 74.4 years, SD = 9.4). Measures included the Comprehensive Falls Risk Screening Instrument, Falls-efficacy Scale-International (FES-I), Activities-specific Balance Confidence (ABC), modified Survey of Activities and Fear of Falling in the Elderly (mSAFFE), Consequences of Falling (CoF), Physical Activity Scale for the Elderly (PASE), and 36-Item Short-Form Health Survey (SF-36). The FES-I, ABC, mSAFFE, and CoF were significantly correlated with each other, with SF-36, and with mobility. The ABC and mSAFFE were significantly correlated with PASE. The ABC differentiated between fallers and nonfallers and predicted total falls risk. Findings can assist with the selection of psychological instruments in a falls risk screening context.  相似文献   

Physiological responses to 1000-m ergometer time-trial performance in outrigger canoeing     

Rebecca Kerr  Warwick Spinks  Anthony Leicht  Wade Sinclair  Louise Woodside 《Journal of sports sciences》2013,31(11):1219-1223

Abstract

Graded exercise tests are commonly used to assess peak physiological capacities of athletes. However, unlike time trials, these tests do not provide performance information. The aim of this study was to examine the peak physiological responses of female outrigger canoeists to a 1000-m ergometer time trial and compare the time-trial performance to two graded exercise tests performed at increments of 7.5 W each minute and 15 W each two minutes respectively. 17 trained female outrigger canoeists completed the time trial on an outrigger canoe ergometer with heart rate (HR), stroke rate, power output, and oxygen consumption ([Vdot]O₂) determined every 15 s. The mean (± s) time-trial time was 359 ± 33 s, with a mean power output of 65 ± 16 W and mean stroke rate of 56 ± 4 strokes · min^?1. Mean values for peak [Vdot]O₂, peak heart rate, and mean heart rate were 3.17 ± 0.67 litres · min^?1, 177 ± 11 beats · min^?1, and 164 ± 12 beats · min^?1 respectively. Compared with the graded exercise tests, the time-trial elicited similar values for peak heart rate, peak power output, peak blood lactate concentration, and peak [Vdot]O₂. As a time trial is sport-specific and can simultaneously quantify sprint performance and peak physiological responses in outrigger canoeing, it is suggested that a time trial be used by coaches for crew selection as it doubles as a reliable performance measure and a protocol for monitoring peak aerobic capacity of female outrigger canoeists.  相似文献   

Effect of attending to a ball during a side-cut maneuver on lower extremity biomechanics in male and female athletes     

Rebecca Fedie  Kristen Carlstedt  Thomas W. Kernozek 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(3):165-177

Many sports associated with anterior cruciate ligament (ACL) injury require athletes attend to a ball during participation. We investigated effects of attending to a ball on lower extremity mechanics during a side-cut maneuver and if these effects are consistent for males and females. Sagittal and frontal plane hip and knee kinematics and joint moments were measured during side-cut maneuvers in 19 male and 19 female National Collegiate Athletic Association division III basketball players. Participants also experienced two side-cut conditions that required attention to a ball. Our results did not indicate that the effect of attention varies with gender. However, during side-cut conditions while attending to a ball, internal knee adductor moment was 20% greater (p = 0.03) and peak knee flexion angle was 4° larger (p < 0.01). Females demonstrated 5° less hip flexion (p = 0.046), 12° less knee flexion (p < 0.01), and 4° more knee abduction (p = 0.026) at initial contact during all side-cut conditions than males. Attention to a ball may affect lower extremity mechanics relevant to ACL injury. The validity of laboratory studies of lower extremity mechanics for sports that include attention to a ball may be increased if participants are required to attend to a ball during the task.  相似文献   

Effect of bovine colostrum on anaerobic exercise performance and plasma insulin-like growth factor I     

Buckley JD  Brinkworth GD  Abbott MJ 《Journal of sports sciences》2003,21(7):577-588

In this study, we examined the effects of bovine colostrum on peak vertical jump power (VJpeak), peak cycle power (CPpeak), alactic anaerobic work capacity, resistance exercise one-repetition maxima (1-RM) and plasma insulin-like growth factor I (IGF-I) concentrations. Using a randomized, double-blind, placebo-controlled, parallel design, 51 males completed 8 weeks of resistance and plyometric training while consuming 60 g x day(-1) of bovine colostrum (n = 26) or concentrated whey protein powder (n = 25). Peak vertical jump power, peak cycle power, alactic anaerobic work capacity, 1-RM and plasma IGF-I were not different between groups at baseline (P > 0.33). Peak vertical jump power and peak cycle power were still not significantly different between groups by week 4 (VJpeak: bovine colostrum, 7231 +/- 488 W; whey protein, 7214 +/- 530 W; P = 0.99; CPpeak: bovine colostrum, 1272 +/- 202 W; whey protein, 1232 +/- 208 W; P = 0.99). By week 8, however, peak vertical jump power (bovine colostrum, 7370 +/- 503 W; whey powder, 7237 +/- 481 W; 95% confidence intervals, 54 to 170 W; P < 0.01) and peak cycle power (bovine colostrum, 1400 +/- 215 W; whey protein, 1311 +/- 192 W; 95% confidence intervals, 20 to 61 W; P < 0.01) were significantly higher in the bovine colostrum condition. Alactic anaerobic work capacity and 1-RM increased (P < 0.001), but the increases were not different between groups (P > 0.08). Plasma IGF-I did not change in either group (P = 0.55). We conclude that bovine colostrum supplementation during training significantly increased peak anaerobic power, but had no effect on alactic anaerobic work capacity, 1-RM or plasma IGF-I.  相似文献   

Working with Spanish-speaking children     

Rebecca Pena Hines  Verna Hildebrand 《Early Childhood Education Journal》1976,3(3):28-31

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Havruta Goes to University: Havruta-style Text Study in a College Education Class     

Rebecca Shargel 《Journal of Jewish Education》2019,85(1):4-26

ABSTRACT

This article presents original qualitative research applying paired text study, havruta learning, to the secular college classroom. I adapted this method to a first-year seminar in a public university and found that students perceived that havruta improved their abilities to verbalize their understandings through reading text aloud and debating one another, opened their eyes to new perspectives, engaged them in argumentation, and empowered them to take charge of learning. Despite students’ overall resoundingly positive reflections upon their havruta experience, I also inquired as to perceived disadvantages, which included unbalanced participation, discomfort with disagreeing, and agreement leading to stagnation. Strategies I posit to address these challenges include planning for and evaluating future havruta learning and evaluating the balance and quality of work of partners.  相似文献   

Questioning as regulatory work practice: The communicative accomplishment of reliability and safety in the oversight of nuclear power plants     

Joshua B. Barbour  Rebecca Gill 《Communication monographs》2017,84(4):466-487

The safety of high hazard systems depends on the organizations that monitor and regulate them, but theorizing of these organizations tends to gloss over the specific communicative practices that comprise organizing for reliability and safety. This article investigates nuclear power plant inspectors’ communicative work practices by studying how asking and answering questions organizes their work. The data include interviews (N?=?29) and shadowing of resident inspectors at six nuclear power plants and a regional office of the U.S. Nuclear Regulatory Commission. The analysis of communicative work practices central to inspection work (e.g., interrogating, coordinating interaction, and keeping track) contribute to normative theory of questioning in safety organizing with implications for the communicative study of questioning, work practice, and high hazard systems.  相似文献   

Is the answer still in the machine: do publishers need digital rights management?     

Duncan CALOW  Rebecca EGAN 《Learned Publishing》2008,21(3):167-175

Has the challenge of unauthorized digital reproduction and distribution of copyright works been met by the use of so‐called ‘digital rights management’ (DRM) technology – and what role will DRM play in publishing, including scholarly journal and learned publishing? This article explores the legal and commercial issues surrounding DRM from its analogue origins through to the latest market developments. It argues that the implementation of DRM in other media sectors provides valuable lessons to publishers. Acknowledging the practical challenges that DRM has faced, the article suggests that whilst DRM will offer an answer to ‘the machine', it must form part of a flexible solution that adapts to the requirements of electronic publishing.  相似文献   

An invitation to reflect on facilitation and evaluation within action learning     

Kathryn Winterburn  Sue Smith  Christine Abbott  Kath Aspinwall 《Action Learning: Research and Practice》2018,15(1):38-39

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