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51.
The internal/external frame of reference (I/E) model by Marsh (e.g., 1990a) assumes two central information sources for the constitution of domain-specific academic self-concepts: (1) social comparisons (external frame of reference), in which students compare their own achievements with those of their classmates; and (2) intraindividual comparisons (internal frame of reference), in which students compare their own achievements in one subject with their achievements in other subjects. In path analyses, it has been found that the latter type of comparison leads to negative paths from achievement indicators in subject A to self-concept measures in subject B. To investigate the actual impact of achievement feedback and of the frames of reference on changes in self-concept variables, we analyzed math and German self-concepts immediately following the announcement of exam results in each subject. Participants were 258 7th- to 9th-graders. Path analyses using structural equation modeling supported the validity of the I/E model with respect to the impact of simultaneously given current exam results. In particular, German achievement had a negative impact on subsequent math self-concept. Copyright 2001 Academic Press. 相似文献
52.
Yorck Olaf Schumacher Roman Mroz Peter Mueller Andreas Schmid Gerta Ruecker 《Journal of sports sciences》2013,31(11):1149-1156
Abstract The development of peak performances is a main research focus in sports science. It is unclear how many former top junior athletes achieve success in the elite class later. The aim of the present study was to examine the careers of athletes who participated in major junior or adult/elite cycling events using prospective and retrospective analysis of competition results. The official results of major junior (age ≤ 18 years) and elite (age > 18 years) cycling races from 1980 to 2004 were analysed. Age-related aspects, career lengths, and success were compared between riders who presented results in both junior and elite races (JUNIOR ELITE) and riders who had no junior race results (ELITE ONLY). Altogether, 27,454 results of 8004 athletes from 108 countries were collected. We found that 29.4% of the elite athletes had participated in junior World Championships, and that 34% of the participants in junior World Championships later participated in major elite competitions. JUNIOR ELITE athletes are significantly more successful in several cycling disciplines and have their first and last elite result at a younger age than ELITE ONLY athletes. No difference was found in career lengths. The data presented here emphasize the importance of long-term training programmes in the development of peak performance in cycling. 相似文献
53.
Christian Fischer Leila S. Overney Mathieu Fauve Olaf Blanke Hansueli Rhyner Michael H. Herzog 《Journal of sports sciences》2013,31(14):1567-1576
Abstract Flexural and torsional rigidity are important properties of skis. However, the flexural and torsional rigidity that lead to optimal performance remain to be established. In the present study, four pairs of slalom skis that differed in flexural and torsional rigidity were tested by advanced and expert skiers. Using a 10-item questionnaire, different aspects of the skis' performance were rated on a 9-point scale. For each pair of skis, physical measurements were compared with the ratings of the two groups of skiers. Correlations (Spearman) were then determined between (i) different mechanical properties of the skis (static and dynamic), (ii) subjective assessments of the participants, and (iii) properties of the skis and the participants' assessments. The latter showed that expert skiers rate the aspects of the skis more accurately than advanced skiers. Most importantly, expert skiers are particularly sensitive to torsion of the skis. These results suggest that such highly rated elements should be addressed in future ski designs. 相似文献
54.
Academic self-concept, interest, grades, and standardized test scores: reciprocal effects models of causal ordering 总被引：1，自引：0，他引：1
Reciprocal effects models of longitudinal data show that academic self-concept is both a cause and an effect of achievement. In this study this model was extended to juxtapose self-concept with academic interest. Based on longitudinal data from 2 nationally representative samples of German 7th-grade students (Study 1: N = 5,649, M age = 13.4; Study 2: N = 2,264, M age = 13.7 years), prior self-concept significantly affected subsequent math interest, school grades, and standardized test scores, whereas prior math interest had only a small effect on subsequent math self-concept. Despite stereotypic gender differences in means, linkages relating these constructs were invariant over gender. These results demonstrate the positive effects of academic self-concept on a variety of academic outcomes and integrate self-concept with the developmental motivation literature. 相似文献
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56.
Considerable research has focused on how best to satisfy modern societies’ needs for skilled labour in the field of science. The present study evaluated an intervention programme designed to increase secondary school students’ motivation to pursue a science career. Students from 3 schools of the highest educational track participated for up to 2 years in the intervention programme, which was implemented as an elective in the school curriculum. Our longitudinal study design for evaluating the effectiveness of the intervention programme included all students at the grade levels involved in the programme with students who did not participate serving as a control group. Mixed-model analyses of variance showed none of the intended effects of the intervention programme on science motivation; latent growth models corroborated these results. When the programme began, students who enrolled in the science elective (n?=?92) were already substantially more motivated than their classmates (n?=?228). Offering such an intervention programme as an elective did not further increase the participating students’ science motivation. It seems worthwhile to carry out intervention programmes with talented students who show (comparatively) little interest in science at the outset rather than with highly motivated students who self-select into the programme. 相似文献
57.
Olaf Köller 《Zeitschrift für Erziehungswissenschaft》2006,9(3):295-298
58.
Julia Becherer Olaf Köller Friederike Zimmermann 《Zeitschrift für Erziehungswissenschaft》2017,20(3):405-424
Prior research indicates that social behavior contributes to school achievement. The underlying mechanisms, however, have received little research attention to date. To investigate peer acceptance as mediating the influences of prosocial and antisocial behavior on school grades, this prospective study draws on 2387 ninth graders. All students in a class rated their peers in terms of prosocial and antisocial behavior, class teachers rated their students’ peer acceptance in class, and grades in German and mathematics were collected from students’ report cards. Prior report card grades, gender and socioeconomic status were controlled for. Structural equation modeling shows direct positive paths between prosocial behavior and both peer acceptance and grades; antisocial behavior negatively predicted both peer acceptance and grades. Prosocial behavior contributed to better grades via higher peer acceptance, whereas concerning antisocial behavior, the mediating effect was statistically not significant. Results are discussed with regard to their practical relevance and implications for future research. 相似文献
59.
Cut‐scores were set by expert judges on assessments of reading and listening comprehension of English as a foreign language (EFL), using the bookmark standard‐setting method to differentiate proficiency levels defined by the Common European Framework of Reference (CEFR). Assessments contained stratified item samples drawn from extensive item pools, calibrated using Rasch models on the basis of examinee responses of a German nationwide assessment of secondary school language performance. The results suggest significant effects of item sampling strategies for the bookmark method on cut‐score recommendations, as well as significant cut‐score judgment revision over cut‐score placement rounds. Results are discussed within a framework of establishing validity evidence supporting cut‐score recommendations using the widely employed bookmark method. 相似文献
60.
Vogt S Schumacher YO Blum A Roecker K Dickhuth HH Schmid A Heinrich L 《Journal of sports sciences》2007,25(12):1299-1305
Until recently, the physiological demands of cycling competitions were mostly reflected by the measurement of heart rate and the indirect estimation of exercise intensity. The purpose of this case study was to illustrate the varying power output of a professional cyclist during flat and mountain stages of a Grand Tour (Giro d'Italia). Nine stage recordings of a cyclist of the 2005 Giro d'Italia were monitored using a mobile power measurement device (SRM Trainingssystem, Julich, Germany), which recorded direct power output and heart rate. Stages were categorized into flat (n = 5) and mountain stages (n = 4). Data were processed electronically, and the overall mean power in flat and mountain stages and maximal mean power for various durations were calculated. Mean power output was 132 W +/- 26 (2.0 W x kg(-1) +/- 0.4) for the flat and 235 W +/- 10 (3.5 W x kg(-1) +/- 0.1) for the mountain stages. Mountain stages showed higher maximal mean power (367 W) for longer durations (1800 s) than flat stages (239 W). Flat stages are characterized by a large variability of power output with short bursts of high power and long periods with reduced intensity of exercise, whereas mountain stages mostly require submaximal, constant power output over longer periods. 相似文献