Meeting in the Middle: The Role of Mutual Biracial Friends in Cross-Race Friendships     

Leslie Echols  Sandra Graham 《Child development》2020,91(2):401-416

Social network analysis was used to examine the role of having a mutual biracial friend on cross-race friendship nominations among monoracial sixth-grade students (M_age = 10.56 years) in two racially diverse middle schools (n = 385; n = 351). Monoracial youth were most likely to choose same-race peers as friends but more likely to choose biracial than different-race peers as friends, suggesting that racial homophily may operate in an incremental way to influence friendships. Monoracial different-race youth were also more likely to be friends if they had a mutual biracial friend. The findings shed light on the unique role that biracial youth play in diverse friendship networks. Implications for including biracial youth in studies of cross-race friendship are discussed.  相似文献   

How schools work: an inside account of failure and success from one of the nation’s longest-serving secretaries of education     

Sandra Stotsky 《Journal of School Choice》2019,13(1):128-130

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Unraveling the Relation Between Reading Comprehension and Print Exposure     

Florina Erbeli  Elsje van Bergen  Sara A. Hart 《Child development》2020,91(5):1548-1562

The purpose of this study was to test the directionality of influence between reading comprehension (RC) and print exposure (PE), thereby estimating genetic and environmental effects of this relation. The sample consisted of 910 twins in fourth through ninth grades (M_age = 12.33 years, SD = 1.41) from the Florida Twin Project on Reading, Behavior, and Environment. Using direction-of-causation model in a twin design, results supported a direction of influence running from RC to PE. This relation was underpinned by genetic and environmental factors of RC as well as PE. Implications for reading education are discussed.  相似文献   

Affordable Course Materials: Electronic Textbooks and Open Educational Resources     

Robert J. Vander Hart 《Journal of Web Librarianship》2018,12(2):141-142

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Impact of age on host responses to diet-induced obesity:Development of joint damage and metabolic set points     

Kelsey H.Collins  Graham Z.MacDonald  David A.Hart  Ruth A.Seerattan  Jaqueline L.Rios  Raylene A.Reimer  Walter Herzog 《运动与健康科学(英文)》2020,9(2):132-139,197

Background:Osteoarthritis is one of the leading causes of pain and disability worldwide,and a large percentage of patients with osteoarthritis are individuals who are also obese.In recent years,a series of animal models have demonstrated that obesity-inducing diets can result in synovial joint damage(both with and without the superimposition of trauma),which may be related to changes in percentage of body fat and a series of low-level systemic inflammatory mediators.Of note,there is a disparity between whether the dietary challenges commence at weaning,representing a weanling onset,or at skeletal maturity,representing an adult onset of obesity.We wished to evaluate the effect ofthe dietary exposure time and the age at which animals are exposed to a high-fat and high-sucrose(HFS) diet to determine whether these factors may result in disparate outcomes,as there is evidence suggesting that these factors result in differential metabolic disturbances.Based on dietary exposure time,we hypothesized that rats fed an HFS diet for 14 weeks from weaning(HFS Weanling) would demonstrate an increase in knee joint damage scores,whereas rats exposed to the HFS diet for 4 weeks,starting at 12 weeks of age(HFS Adult) and rats exposed to a standard chow diet(Chow)would not display an increase in knee joint damage scores.Methods:Male Sprague-Dawley rats were fed either an HFS diet for 14 weeks from weaning(HFS Weanling) or an HFS diet for 4 weeks,starting at 12 weeks of age(HFS Adult).At sacrifice,joints were scored using the modified Mankin Criteria,and serum was analyzed for a defined subset of inflammatory markers(Interleukin-6,leptin,monocyte chemoattractant protein-1,and tumor necrosis factorα).Results:When the HFS Weanling and HFS Adult groups were compared,both groups had a similar percent of body fat,although the HFS Weanling group had a significantly greater body mass than the HFS Adult group.The HFS Weanling and HFS Adult animals had a significant increase in body mass and percentage of body fat when compared to the Chow group.Although knee joint damage scores were low in all 3 groups,we found,contrary to our hypothesis,that the HFS Adult group had statistically significant greater knee joint damage scores than the Chow and HFS Weanling groups.Furthermore,we observed that the HFS Weanling group did not have significant differences in knee joint damage scores relative to the Chow group.Conclusion:These findings indicate that the HFS Weanling animals were better able to cope with the dietary challenge of an HFS diet than the HFS Adult group.Interestingly,when assessing various serum proinflammatory markers,no significant differences were detected between the HTS Adult and HFS Weanling groups.Although details regarding the mechanisms underlying an increase in knee joint damage scores in the HFS Adult group remain to be elucidated,these findings indicate that dietary exposure time maybe less important than the age at which an HFS diet is introduced.Moreover,increases in serum proinflammatory mediators do not appear to be directly linked to knee joint damage scores in the HFS Weanling group animals but may be partially responsible for the observed knee joint damage in the adults over the very short time of exposure to the HFS diet.  相似文献   

A capability approach to children's well-being,agency and participatory rights in education     

Caroline Sarojini Hart  Nicolás Brando 《European Journal of Education》2018,53(3):293-309

This article applies a capability approach to examine how children's agency, well-being and participation rights can be developed and supported in educational settings. We introduce Amartya Sen's concepts of agency and well-being freedoms and achievements to highlight the tensions and trade-offs between risks to children's agency and well-being in and through educational processes. We draw upon selected empirical examples to illustrate this relationship further. By positioning the development of children's agency as an explicit and important goal of education, alongside well-being achievement, we aim to broaden the evaluative space for assessing what constitutes quality in children's education. We conclude with some reflections on implications for policy and practice going forward.  相似文献   

Connected migrants: Encapsulation and cosmopolitanization     

Koen Leurs  Sandra Ponzanesi 《Popular Communication》2018,16(1):4-20

ABSTRACT

Taking a cue from Dana Diminescu’s seminal manifesto on “the connected migrant,” this special issue introduces the notions of encapsulation and cosmopolitanism to understand digital migration studies. The pieces here present a nonbinary, integrated notion of an increasingly digitally mediated cosmopolitanism that accommodates differences within but also recognizes Europe’s colonial legacy and the fraught postcolonial present. Of special interest is an essay by the late Zygmunt Bauman, who argues that the messy boundaries of Europe require a renewed vision of cosmopolitan Europe, based on dialogue and aspirations, rather than on Eurocentrism and universal values. In this article, we focus on three overarching discussions informing this special issue: (a) an appreciation of the so-called “refugee crisis” and the articulation of conflicting Europeanisms, (b) an understanding of the relationships between the concepts of cosmopolitanization and encapsulation, and (c) a recognition of the emergence of the interdisciplinary field of digital migration studies.  相似文献   

Key questions in education: historical and contemporary perspectives     

Sandra Lyndon 《师资教育杂志》2017,43(1):122-124

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THE TEACHER'S CONTRIBUTION TO THE TREATMENT OF INFANTILE AUTISM     

Sandra Sewell 《International Journal of Disability, Development & Education》1970,17(2):89-96

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Commentary: the coalition for improving maternity services:     

Hodges S  Stewart SB  Hotelling B  Romano A 《The Journal of perinatal education》2007,16(Z1):93S-96S

A consumer advocate, two childbirth educators, and a certified nurse-midwife each provide commentary on the effectiveness of and potential uses for the Evidence Basis for the Ten Steps of Mother-Friendly Care.  相似文献