排序方式: 共有75条查询结果,搜索用时 31 毫秒
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Colombo J Kannass KN Shaddy DJ Kundurthi S Maikranz JM Anderson CJ Blaga OM Carlson SE 《Child development》2004,75(4):1254-1267
Infants were followed longitudinally to document the relationship between docosahexaenoic acid (DHA) levels and the development of attention. Erythrocyte (red-blood cell; RBC) phospholipid DHA (percentage of total fatty acids) was measured from infants and mothers at delivery. Infants were assessed in infant-control habituation at 4, 6, and 8 months augmented with psychophysiological measures, and on free-play attention and distractibility paradigms at 12 and 18 months. Infants whose mothers had high DHA at birth showed an accelerated decline in looking over the 1st year and increases in examining during single-object exploration and less distractibility in the 2nd year. These findings are consistent with evidence suggesting a link between DHA and cognitive development in infancy. 相似文献
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Childbirth education for multiple pregnancy: part 2: intrapartum and postpartum considerations 下载免费PDF全文
Montgomery KS Cubera S Belcher C Patrick D Funderburk H Melton C Fastenau M 《The Journal of perinatal education》2005,14(3):33-38
Women with a multiple pregnancy can expect a different labor and birth course than those with a singleton pregnancy. While the postpartum period is similar to that of families with a singleton, it is likely to be more hectic in families with multiple infants. In addition, a multiple pregnancy increases both maternal and neonatal risks; therefore, women with a multiple pregnancy may experience slight differences in care due to these potential risks, including additional monitoring and treatment. This article discusses the intrapartum and postpartum considerations families with a multiple pregnancy/birth may experience. This information is provided so that the childbirth educator can incorporate this content into courses, as appropriate, and assist families with a multiple pregnancy to anticipate a realistic birth and postpartum experience. 相似文献
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Nicholas H. Wasserman Christa Quint Scott A. Norris Thomas Carr 《International Journal of Science and Mathematics Education》2017,15(3):545-568
In an undergraduate Calculus III class, we explore the effect of “flipping” the instructional delivery of content on both student performance and student perceptions. Two instructors collaborated to determine daily lecture notes, assigned the same homework problems, and gave identical exams; however, compared to a more traditional instructional approach, the flipped instructor utilized videos to communicate more procedural course content to students out-of-class, with time in-class spent on more conceptual activities and homework problems. Findings from two semesters indicate similar performance on more procedural problems and small to moderate gains for the flipped students (N = 74) over their traditional counterparts (N = 77) on more conceptual exam problems. However, student perceptions remain mixed, with flipped students reporting increased communication during class but traditional students perceiving more effective use of class time, despite the gains in performance for flipped students. 相似文献
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This article investigates university students’ attitudes and perceptions about language in a multilingual country where most instruction is in English and annual national literacy results have been declining for at least 15 years. Despite this decline, English seems to be entrenched as the language of instruction, and at university it seems a foregone conclusion that instruction will occur in English. Bourdieu’s concept of linguistic capital is offered as an explanation for the preponderance of English, but the question is posed: Is the dominance of English as simple as desiring linguistic capital? Do students really regard English as critical to success, and if so, is it to the exclusion of their home languages? The results show that students invest considerable effort in learning English, but not to the exclusion of their home language and with little desire to assimilate with the English culture. The results also provide interesting and sometimes contrasting insights into students’ desired language of instruction. 相似文献
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Action research (AR) comprises a diverse family of methodologies. Common amongst most types of AR are both an emergent design – leading to action or change – and participation or community involvement. While this type of research has expanded considerably since the early 2000s, the criteria used for ethical review have apparently been slow to adapt to the emergent and participatory nature of this research. This has resulted in researchers reporting negative attitudes towards, and experiences with, review boards and ethics review processes; painting ethical review committees, at times, as insufficient or unnecessary. A review of the literature was undertaken to assess the state of play in this regard. Few articles disclose the side of the ethical review boards or committee members and the issues they face in undertaking ethical review of studies with an emergent, action, or participatory focus. A larger number of peer-reviewed journal articles report on the views of the researchers, but mainly through specific case examples where ethical review processes presented challenges to researchers and communities employing a participatory approach to research. The focus of this article will be on both the generic challenges researchers report in managing ethical review and of strategies utilized or recommended to conduct participatory research in an ethical manner. The contrasting experiences of researchers and ethical review committee members will be considered where available. 相似文献
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E-moderation has been a common practice in asynchronous discussions of postsecondary courses. We consider here e-moderation of synchronous discussions in the school context. We adopt a design research approach to elaborate an environment, the Argunaut system, that fits the reality of classrooms in which moderation of several small-group synchronous discussions in parallel is desirable. We describe the Argunaut system and then describe an experiment in which a moderator could elaborate several strategies in 2 synchronous discussions (1 with 2 groups in parallel and 1 with 4 groups in parallel). Through the technique of cued retrospective reporting, we could identify those strategies and could show how technology and moderation are interwoven. We then assessed whether the actions of the moderator had some positive impact on the flow of the discussions. The positive findings that emerge from this study indicate that teachers can enact this novel practice in classrooms, enabling by such proper guidance for productive engagement in the synchronous discussions of many students in the same class. 相似文献
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Emily J. Solari Carolyn A. Denton Yaacov Petscher Christa Haring 《Journal of research on educational effectiveness》2018,11(2):163-191
This study investigates the effects and feasibility of an intervention for first-grade students at risk for reading difficulties or disabilities (RD). The intervention was provided by general education classroom teachers and consisted of 15 min whole-class comprehension lessons (Tier 1) and 30 min Tier 2 intervention sessions in word reading, comprehension, and text reading. First-grade teachers (n = 21), with 4–5 students at risk for reading difficulties and potential reading disability were randomly assigned to treatment or typical practice comparison conditions. Significant group differences were detected on all measures of word reading, decoding, and fluency. Effect sizes were educationally important for all measures of word reading, decoding, and reading comprehension; however, effects on standardized measures were smaller than those in prior studies with similar students in which intervention was typically provided outside the regular classroom. An exploratory analysis indicated that students at different parts of the pretest and posttest distributions responded more and less positively to the intervention, providing insights that may help guide future revisions. The study provides preliminary evidence of the intervention's promise for positively impacting student outcomes. 相似文献
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