Connecting inside out: Development of the social brain in infants and toddlers with a focus on myelination as a marker of brain maturation     

Nora Schneider  Elizabeth Greenstreet  Sean C. L. Deoni 《Child development》2022,93(2):359-371

Early childhood is a sensitive period for learning and social skill development. The maturation of cerebral regions underlying social processing lays the foundation for later social-emotional competence. This study explored myelin changes in social brain regions and their association with changes in parent-rated social-emotional development in a cohort of 129 children (64 females, 0–36 months, 77 White). Results reveal a steep increase in myelination throughout the social brain in the first 3 years of life that is significantly associated with social-emotional development scores. These findings add knowledge to the emerging picture of social brain development by describing neural underpinnings of human social behavior. They can contribute to identifying age-/stage-appropriate early life factors in this developmental domain.  相似文献   

Does modality matter? A latent profile and transition analysis of sedentary behaviours among school-aged youth: The UP&DOWN study     

David Sánchez-Oliva  Rebecca M. Leech  Alberto Grao-Cruces  Irene Esteban-Cornejo  Carmen Padilla-Moledo  Oscar L. Veiga 《Journal of sports sciences》2020,38(9):1062-1069

ABSTRACT

The aims of this study were to identify profiles of sedentary behaviour (SB) patterns, based on leisure-time self-reported SB modalities (screen, educative, social, and relaxing) and to evaluate changes in these profiles over 2 years among Spanish youth aged 8–18 years. Latent profile analysis (LPA), a data-driven analytic approach, was used to identify groups of boys and girls (n = 1553; 48% girls; mean±SD age: 12.56 ± 2.49 y) with distinct SB profiles using the SB modalities (time/d) as input variables. Latent transition analysis, an extension of LPA that uses longitudinal data, was used to analyse 2-year changes in these profiles. At baseline, four and three SB profiles were found among boys (labelled: screen, educative, social, and relaxing) and girls (labelled: screen/social, educative, and relaxing), respectively. Overall, more girls (range: 48%-67%) had the same profile over time, than boys (40%-52%). Participants with a screen or relaxing SB profile at baseline were more likely to have an educative profile after 2 years. Youth with a social and an educative SB profile at baseline were more likely to transition to profiles characterized by higher screen and social SB, respectively. Using a novel and person-centered approach, this study identified gender-specific SB profiles that were moderately stable over time.  相似文献   

‘Just stick to the science’ is not enough     

Peterson  Erik L. 《Metascience》2019,28(1):147-150

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Digital Module 16: Longitudinal Data Analysis     

Jeffrey R. Harring  Tessa L. Johnson 《Educational Measurement》2020,39(3):137-138

In this digital ITEMS module, Dr. Jeffrey Harring and Ms. Tessa Johnson introduce the linear mixed effects (LME) model as a flexible general framework for simultaneously modeling continuous repeated measures data with a scientifically defensible function that adequately summarizes both individual change as well as the average response. The module begins with a nontechnical overview of longitudinal data analyses drawing distinctions with cross-sectional analyses in terms of research questions to be addressed. Nuances of longitudinal designs, timing of measurements, and the real possibility of missing data are then discussed. The three interconnected components of the LME model—(1) a model for individual and mean response profiles, (2) a model to characterize the covariation among the time-specific residuals, and (3) a set of models that summarize the extent that individual coefficients vary—are discussed in the context of the set of activities comprising an analysis. Finally, they demonstrate how to estimate the linear mixed effects model within an open-source environment (R). The digital module contains sample R code, diagnostic quiz questions, hands-on activities in R, curated resources, and a glossary.  相似文献   

湖北土家族3～6岁幼儿体质研究   总被引：3，自引：0，他引：3  

张有平  李鹏  段辉涛 《中国体育科技》2003,39(3):58-60

为了了解湖北土家族城乡 3～ 6岁幼儿的体质现状 ,通过对土家族儿童进行身体形态和机能指标的测试 ,结果表明 ,与全国平均值比较 ,湖北土家族儿童的形态指标较差 ,机能指标有优有劣。  相似文献   

正交变换在积分中的应用     

游家桦 《贵阳金筑大学学报》2003,(3)

利用正交变换,在重积分、曲面积分中处理积分的变数替换。  相似文献   

对我国部分项目优秀教练员能力结构的研究   总被引：14，自引：1，他引：13  

尹军  于勇  蔡有志 《中国体育科技》2001,37(10):45-46

采用文献资料调研、专家及问卷调查和数理统计等方法对我国部分项目优秀教练员的能力结构进行研究,探讨从事不同运动项目的优秀教练员所具有的能力结构与共同特征.  相似文献   

Barriers to teaching profession for hearing-impaired adults     

R D Moulton  L Roth  J Tao 《American annals of the deaf》1987,132(6):372-375

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Why visual literacy: Consciousness and convention     

Landra L. Rezabek 《TechTrends》2004,49(3):19-20

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论学校经营中教育服务产品的性质   总被引：1，自引：0，他引：1  

周游 《贵州教育学院学报》2004,20(6):6-9

随着教育市场的逐步形成，学校经营已经成为可能，为此有必要对学校经营的产品进行重新诠释。提出学校经营的产品就是教育服务的理念，从教育服务的量与质上构建出教育服务产品的表现形态，并设计了教育服务产品的生产流程及其销售的运行模式，以期引起大家对教育的关注。  相似文献