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101.
Gavin W. Fulmer Iris C.H. Lee Kelvin H.K. Tan 《Assessment in Education: Principles, Policy & Practice》2015,22(4):475-494
We present a multi-level model of contextual factors that may influence teachers’ assessment practices, and use this model in a selected review of existing literature on teachers’ assessment knowledge, views and conceptions with respect to these contextual factors. Adapting Kozma’s model, we distinguish three levels of influence on teachers’ practices: micro, meso and macro. We searched for relevant articles in EBSCO, JSTOR and other databases, and review selected articles with a focus on the complex relationships within and across these levels. Findings reveal a large body of research at the micro-level (teacher), such as on teachers’ values, conceptions and knowledge. However, there is relatively less research at the meso-level (school) or connecting it with the micro- or macro-levels. Implications for future research are also discussed. 相似文献
102.
Kyle F. Gill Susan T. Arthur Ian Swaine Gavin Richard Devereux Yvette M. Huet Erik Wikstrom 《Journal of sports sciences》2015,33(6):616-621
To reduce resting blood pressure, a minimum isometric exercise training (IET) intensity has been suggested, but this is not known for short-term IET programmes. We therefore compared the effects of moderate- and low-intensity IET programmes on resting blood pressure. Forty normotensive participants (22.3 ± 3.4 years; 69.5 ± 15.5 kg; 170.2 ± 8.7 cm) were randomly assigned to groups of differing training intensities [20%EMGpeak (~23%MVC, maximum voluntary contraction, or 30%EMGpeak (~34%MVC)] or control group; 3 weeks of IET at 30%EMGpeak resulted in significant reductions in resting mean arterial pressure (e.g. ?3.9 ± 1.0 mmHg, P < 0.001), whereas 20%EMGpeak did not (?2.3 ± 2.9 mmHg; P > 0.05). Moreover, after pooling all female versus male participants, IET induced a 6.9-mmHg reduction in systolic blood pressure in female participants, but only a 1.5-mmHg reduction in systolic blood pressure in male participants, although the difference was not significant. An IET intensity between 20%EMGpeak and 30%EMGpeak is sufficient to elicit significant resting blood pressure reductions in a short-term training period (3 weeks). In addition, sexual dimorphism may exist in the magnitude of reductions, but further work is required to confirm this possibility, which could be important in understanding the mechanisms responsible. 相似文献
103.
Gavin Davies 《科技新时代》2005,(8):8-9
拍摄者自述:“这张照片是我度蜜月时在马来西亚吉隆坡的黑风洞拍摄的,当时这只四处闲逛的猴子突然顺着台阶跑进了洞中的神殿。” 相似文献
104.
Gavin Morris 《Journal of sports sciences》2017,35(9):852-857
Experiential knowledge of elite National Rugby League (NRL) referees was investigated to determine the key attributes contributing to expert officiating performance. Fourteen current first-grade NRL referees were asked to identify the key attributes they believed contributed to their expert refereeing performance. The modified Delphi method involved a 3-round process of an initial semi-structured interview followed by 2 questionnaires to reach consensus of opinion. The data revealed 25 attributes that were rated as most important that underpin expert NRL refereeing performance. Results illustrate the significance of the cognitive category, with the top 6 ranked attributes all cognitive skills. Of these, the referees ranked decision-making accuracy as the most important attribute, followed by reading the game, communication, game understanding, game management and knowledge of the rules. Player rapport, positioning and teamwork were the top ranked game skill attributes underpinning performance excellence. Expert referees also highlighted a number of psychological attributes (e.g., concentration, composure and mental toughness) that were significant to performance. There were only 2 physiological attributes (fitness, aerobic endurance) that were identified as significant to elite officiating performance. In summary, expert consensus was attained which successfully provided a hierarchy of the most significant attributes of expert NRL refereeing performance. 相似文献
105.
Recent international normative data for the 20-m shuttle-run test demonstrated a below-average performance index for UK children. The aims of the present study were to create an international comparison of 20-m shuttle-run test performance in a sample of English children and to identify age- and sex-specific differences in test performance. Mass, stature, body mass index, and 20-m shuttle-run test performance were measured in 2041 children aged 11-15 years (963 boys, 1078 girls). Performance was expressed as maximum running velocity and a performance index was created by generating z-scores. The shuttle-run test performance index was higher than the existing published value (-0.046, 95% confidence interval [CI] -0.070 to -0.022) for all children (0.061, 95% CI = 0.006 to 0.115), for boys (0.075, 95% CI = -0.022 to 0.171), and for girls (0.048, 95% CI = -0.010 to 0.106). Boys' relative performance increased significantly (F = 4.43, P = 0.002) throughout the measured age range, whereas girls' relative performance tended to decrease (F = 1.98, P = 0.096). The results were favourable when compared with existing values. Differences in performance index may be due to the different geographical areas from which present and past samples were drawn. Reasons for differences in the performance indices between boys and girls warrant further investigation. 相似文献
106.
107.
Levi Frehlich Anita Blackstaffe Gavin R. McCormack 《Measurement in physical education and exercise science》2020,24(1):1-10
ABSTRACTThe Physical Activity Neighborhood Environment Scale (PANES) has been used internationally; however, PANES properties have not been assessed in all geographical contexts. Our objectives were to assess the reliability and validity of an online and paper version of the PANES in Canadian adults. Reliability was estimated using intraclass correlation coefficients (ICC), percent of overall agreement (p0) and Cohen’s Kappa coefficient (κ). Lower 95% confidence interval (CI) ICC ranged from 0.10 to 0.70. Lower 95%CI for κ statistics ranged from ?0.20 to 0.64 and p0 ranged from 80.1% to 95.7%. Cronbach’s alpha coefficients (α) estimated internal consistency of the PANES (α = 0.58 for the paper version and α = 0.55 for the online version). Mean scores for the PANES Built Environment Index (BEI) significantly differed by neighborhood street pattern (p < .05). The PANES administrated via paper or online provides reliable overall agreement and valid estimates of the self-reported neighborhood built environment supportiveness of physical activity. 相似文献
108.
109.
Young infants perceive an object's trajectory as continuous across occlusion provided the temporal or spatial gap in perception is small. In 3 experiments involving 72 participants the authors investigated the effects of different forms of auditory information on 4-month-olds' perception of trajectory continuity. Provision of dynamic auditory information about the object's trajectory enhanced perception of trajectory continuity. However, a smaller positive effect was also obtained when the sound was continuous but provided no information about the object's location. Finally, providing discontinuous auditory information or auditory information that was dislocated relative to vision had negative effects on trajectory perception. These results are discussed relative to the intersensory redundancy hypothesis and emphasize the need to take an intersensory approach to infant perception. 相似文献
110.
We determined the recommendations for preparing and scoring constructed-response (CR) test items in 25 sources (textbooks and chapters) on educational and psychological measurement. The project was similar to Haladyna's (2004) analysis for multiple-choice items. We identified 12 recommendations for preparing CR items given by multiple sources, with 4 of these given by at least half of the sources; and 13 recommendations for scoring CR items given by multiple sources, with 5 given by at least half of the sources. Many recommendations received minority support or were unique to individual sources. Research is needed both on the effect of the recommendations for measurement properties and the extent to which the recommendations are adopted in practice. 相似文献