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41.
Frederic M. Lord 《Journal of Experimental Education》2013,81(4):247-263
The authors investigated predictive relationships among student characteristics that influence motivation for learning and achievement. Participants were students (N = 900) from all 4 grade levels in 18 rural public high schools in the south-western United States. The authors used AMOS 4.0 (J. L. Arbuckle &; W. Wothke, 1996) to test a hypothesized path model in development and validation subsamples. Variables included perceptions of classroom climate, perceived ability, perceived instrumentality of instruction, and achievement goals as predictors of engagement and effort in school. The model fit the data reasonably well, with relatively minor variations in the strength of the paths between subsamples. The authors discuss implications for research and classroom practice. 相似文献
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Frederic E. Ives 《Journal of The Franklin Institute》1902,154(6):441-445
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Maughan RJ Depiesse F Geyer H;International Association of Athletics Federations 《Journal of sports sciences》2007,25(Z1):S103-S113
Many athletes use dietary supplements as part of their regular training or competition routine, including about 85% of elite track and field athletes. Supplements commonly used include vitamins, minerals, protein, creatine, and various "ergogenic" compounds. These supplements are often used without a full understanding or evaluation of the potential benefits and risks associated with their use, and without consultation with a sports nutrition professional. A few supplements may be helpful to athletes in specific circumstances, especially where food intake or food choice is restricted. Vitamin and mineral supplements should be used only when a food-based solution is not available. Sports drinks, energy bars, and protein-carbohydrate shakes may all be useful and convenient at specific times. There are well-documented roles for creatine, caffeine, and alkalinizing agents in enhancing performance in high-intensity exercise, although much of the evidence does not relate to specific athletic events. There are potential costs associated with all dietary supplements, including the risk of a positive doping result as a consequence of the presence of prohibited substances that are not declared on the label. 相似文献
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Undergraduate psychology students rated the importance of several causes of examination outcomes both prior to and after taking a course exam. Similar attributions were made by advanced psychology students who served as course proctors. Students rated proctor characteristics as more important and their own characteristics as less important determinants of exam outcomes, particularly successful outcomes. Results suggested that positivity biases rather than egotism biases are operative in actual classroom settings. Further, contrary to expectancyconfirmation theory, student and proctor preexamination confidence was not strongly related to postexamination attributions. 相似文献