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排序方式: 共有77条查询结果,搜索用时 15 毫秒
41.
Nili Steinberg Shay Tenenbaum Gordon Waddington Roger Adams Gal Zakin Aviva Zeev 《Journal of sports sciences》2020,38(7):719-730
ABSTRACTAiming to evaluate the prevalence of unilateral/bilateral patellofemoral pain (PFP) among young dancers, and to investigate whether different factors are associated with PFP in young dancers, 132 dancers aged 12–14 years were assessed for PFP. Anthropometric parameters, proprioception ability, dynamic postural balance (DPB), and muscle strength were measured. PFP was found in 64.1% of the dancers. No significant differences in the prevalence of dancers with no, unilateral, or bilateral PFP at different ages were found. Significant age effects were found for anthropometric and developmental measurements, and for intensity of training. PFP effect was found for DPB asymmetry, ankle proprioception, and leg-length %height. A higher hip abductor/adductor ratio was associated with PFP in 14-year-old dancers. Binomial logistic regression showed that increased number of hours per day (h/day) and decreased number of hours per week (h/week), low proprioception scores, greater leg length as %height, and more anterior DPB asymmetry were significant predictors of PFP. In conclusion: unilateral/bilateral PFP is common among young dancers. Body morphology, reduced ankle proprioception ability, DPB asymmetry, and increased h/day of practice are associated with PFP. Dance teachers should start monitoring the impact of training and implement injury modification/prevention strategies when their students are at a young age. 相似文献
42.
Shirley R. Steinberg 《Cultural Studies of Science Education》2009,4(3):553-558
I describe how Joe Kincheloe experienced learning from a peer during his pre-school life only to see how his friend was unable
to succeed at school. Joe’s commitment to empowered cognition was grounded first, by his friend, Larry’s mentorship—teaching
him the environmental nuances of the mountains in rural Tennessee, and secondly, the contradiction of schooling being unable
to afford learning for Larry. This article discusses how Kincheloe became a scholar, the salience of Einstein’s work with
his own, and the evolution of his research and scholarship. Examples of Kincheloe’s work addressed are: postformalism, bricolage,
critical theory, and alternative knowledges, and how this work has contributed to science education.
Shirley R. Steinberg is director of The Paulo and Nita Freire International Project for Critical Pedagogy at McGill University. She is the author and editor of many books and articles in cultural studies, urban education, and critical pedagogy including Christotainment: Selling Jesus Through Popular Culture (2009) with Joe Kincheloe, Diversity and Multiculturalism: A Reader (2009), Media literacy: A reader (2007), Teen life in Europe (2005), the award winning Contemporary youth culture: An international encyclopedia (2005), and with Joe Kincheloe, Kinderculture: The corporate construction of childhood (2004), and The Miseducation of the West: How schools and the media distort our understanding of the Islamic world (2004). 相似文献
Shirley R. SteinbergEmail: |
Shirley R. Steinberg is director of The Paulo and Nita Freire International Project for Critical Pedagogy at McGill University. She is the author and editor of many books and articles in cultural studies, urban education, and critical pedagogy including Christotainment: Selling Jesus Through Popular Culture (2009) with Joe Kincheloe, Diversity and Multiculturalism: A Reader (2009), Media literacy: A reader (2007), Teen life in Europe (2005), the award winning Contemporary youth culture: An international encyclopedia (2005), and with Joe Kincheloe, Kinderculture: The corporate construction of childhood (2004), and The Miseducation of the West: How schools and the media distort our understanding of the Islamic world (2004). 相似文献
43.
Age Differences in Future Orientation and Delay Discounting 总被引:1,自引:0,他引:1
Laurence Steinberg Sandra Graham Lia O'Brien Jennifer Woolard Elizabeth Cauffman and Marie Banich 《Child development》2009,80(1):28-44
Age differences in future orientation are examined in a sample of 935 individuals between 10 and 30 years using a delay discounting task as well as a new self-report measure. Younger adolescents consistently demonstrate a weaker orientation to the future than do individuals aged 16 and older, as reflected in their greater willingness to accept a smaller reward delivered sooner than a larger one that is delayed, and in their characterizations of themselves as less concerned about the future and less likely to anticipate the consequences of their decisions. Planning ahead, in contrast, continues to develop into young adulthood. Future studies should distinguish between future orientation and impulse control, which may have different neural underpinnings and follow different developmental timetables. 相似文献
44.
The impact of part-time employment on adolescent functioning remains unclear because most studies fail to adequately control for differential selection into the workplace. The present study reanalyzes data from L. Steinberg, S. Fegley, and S. M. Dornbusch (1993) using multiple imputation, which minimizes bias in effect size estimation, and 2 types of propensity score matching, to account for selection effects. In this sample (N = 1,792; Grades 10-11, M = 16.26), youth who begin working more than 20 hr per week evince declines in school engagement and increases in substance use and delinquency compared with youth who remain unemployed. Conversely, working 20 hr or less a week has negligible effects, positive or negative, on academic, psychological, or behavioral outcomes. 相似文献
45.
Family rearing antecedents of pubertal timing 总被引:5,自引:2,他引:3
Belsky J Steinberg LD Houts RM Friedman SL DeHart G Cauffman E Roisman GI Halpern-Felsher BL Susman E;NICHD Early Child Care Research Network 《Child development》2007,78(4):1302-1321
Two general evolutionary hypotheses were tested on 756 White children (397 girls) studied longitudinally: (1) rearing experiences would predict pubertal timing; and (2) children would prove differentially susceptible to rearing. Analysis of pubertal measurements, including some based on repeated physical assessments, showed that mothering and fathering, earlier and later in childhood, predicted pubertal development, but only for girls, with negative parenting appearing most influential; maternal harsh control predicted earlier menarche. Rearing effects varied by infant negative emotionality, proving stronger (and opposite) for girls who in infancy were lower rather than higher in negativity. Maternal menarche, controlled in all analyses, was a stronger predictor than rearing. Findings are discussed in terms of theory development, genetic and nutritional influences, and sample restrictions. 相似文献
46.
47.
Puberty Predicts Approach But Not Avoidance on the Iowa Gambling Task in a Multinational Sample 下载免费PDF全文
Grace Icenogle Laurence Steinberg Thomas M. Olino Elizabeth P. Shulman Jason Chein Liane P. Alampay Suha M. Al‐Hassan Hanan M. S. Takash Dario Bacchini Lei Chang Nandita Chaudhary Laura Di Giunta Kenneth A. Dodge Kostas A. Fanti Jennifer E. Lansford Patrick S. Malone Paul Oburu Concetta Pastorelli Ann T. Skinner Emma Sorbring Sombat Tapanya Liliana M. Uribe Tirado 《Child development》2017,88(5):1598-1614
According to the dual systems model of adolescent risk taking, sensation seeking and impulse control follow different developmental trajectories across adolescence and are governed by two different brain systems. The authors tested whether different underlying processes also drive age differences in reward approach and cost avoidance. Using a modified Iowa Gambling Task in a multinational, cross‐sectional sample of 3,234 adolescents (ages 9–17; M = 12.87, SD = 2.36), pubertal maturation, but not age, predicted reward approach, mediated through higher sensation seeking. In contrast, age, but not pubertal maturation, predicted increased cost avoidance, mediated through greater impulse control. These findings add to evidence that adolescent behavior is best understood as the product of two interacting, but independently developing, brain systems. 相似文献
48.
In this paper we describe Hydrive, an operational computer-based intelligent tutoring system built to help Air Force technicians develop generalizable skills for troubleshooting hydraulics systems. We use Hydrive as an example of how effective training and assessment is developed from a coherent understanding of a target task and how this understanding can be consistently represented in all aspects of a training/assessment instrument. We show how an organizing principle of expert behavior, active path analysis, is used to inform the design and content of the tutor's system, student and instructional models and the design of the tutor's interface. We conclude with information about Hydrive's field trial evaluation and some thoughts on knowledge acquisition and generalizability. 相似文献
49.
50.
Beginning in the early 1990s, states and districts enacted zero-tolerance discipline policies that relied heavily on out-of-school suspensions. Recently, districts nationwide have revised these policies in favor of more tempered disciplinary responses. In 2012–2013, Philadelphia reformed its discipline policy to limit suspensions for nonviolent student misconduct and granted principals greater discretion in responding to more serious occurrences of student misconduct. Employing a difference-in-differences approach, we find that Philadelphia's reform resulted in a modest decline in suspensions for nonviolent infractions in the year of reform; however, total suspensions remained unchanged while serious incidents of student misconduct increased. Further, the truancy rate increased and district math and English language arts achievement declined following the policy reform. These findings should inform policymakers and practitioners on the implications of district-level reforms for suspension usage and the potential consequences for student outcomes. 相似文献