Overlaps of multiple database retrieval and citation tracking in dementia care research: a methodological study     

Julian Hirt  Johannes Bergmann  Melanie Karrer 《Journal of the Medical Library Association》2021,109(2):275

Objective:We aimed to determine overlaps and optimal combination of multiple database retrieval and citation tracking for evidence synthesis, based on a previously conducted scoping review on facilitators and barriers to implementing nurse-led interventions in dementia care.Methods:In our 2019 scoping review, we performed a comprehensive literature search in eight databases (CENTRAL, CINAHL, Embase, Emcare, MEDLINE, Ovid Nursing Database, PsycINFO, and Web of Science Core Collection) and used citation tracking. We retrospectively analyzed the coverage and overlap of 10,527 retrieved studies published between 2015 and 2019. To analyze database overlap, we used cross tables and multiple correspondence analysis (MCA).Results:Of the retrieved studies, 6,944 were duplicates and 3,583 were unique references. Using our search strategies, considerable overlaps can be found in some databases, such as between MEDLINE and Web of Science Core Collection or between CINAHL, Emcare, and PsycINFO. Searching MEDLINE, CINAHL, and Web of Science Core Collection and using citation tracking were necessary to retrieve all included studies of our scoping review.Conclusions:Our results can contribute to enhancing future search practice related to database selection in dementia care research. However, due to limited generalizability, researchers and librarians should carefully choose databases based on the research question. More research on optimal database retrieval in dementia care research is required for the development of methodological standards.  相似文献   

Current Literature     

Debbie Fisher  Bob Gann  Shane Godbolt  John Hewlett  Julian Hodgson  Jane Williamson 《Health information and libraries journal》1986,3(3):189-193

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The Extent of Mismeasurement for Aberrant Examinees     

Alexandra Petridou  Julian Williams 《Educational Assessment》2013,18(1):42-68

The person-fit literature assumes that aberrant response patterns could be a sign of person mismeasurement, but this assumption has rarely, if ever, been empirically investigated before. We explore the validity of test responses and measures of 10-year-old examinees whose response patterns on a commercial standardized paper-and-pencil mathematics test were flagged as aberrant. Validity evidence was collected through postexamination reflective interviews with 31 of the 80 pupils flagged as aberrant and their teachers, and teacher assessment (TA) judgments for the whole examination cohort of 674 examinees. Analysis suggested that interview-adjusted scores were significantly better fitting than expected by chance, but only some adjustments suggest serious mismeasurement. In addition, disagreement between TA and test scores was significantly greater for aberrant examinees, and partially predicted the interview adjustments. We conclude that person misfit statistics when combined with TA might be a useful antidote to mismeasurement, and we discuss the implications for assessment research and practice.  相似文献   

Using Simulations to Teach Leadership Roles     

Julian Sefton-Green 《Teaching Education》2013,24(1):37-51

This paper investigates the nature of informal learning through a study of children's (age 9-13) use of chatrooms and in a computer games class in an out-of-school-centre. The paper discusses contemporary policy interest in the concept but argues that it loses value for educationalists except as "critical lens" to explore formal learning. Key elements of informal learning are dissected and close analysis of children's talk in informal learning situations is analysed in terms of its pedagogic structure.  相似文献   

Virtually the same?: Online higher education in the post Covid-19 era     

Xianghan O’Dea  Julian Stern 《British journal of educational technology : journal of the Council for Educational Technology》2022,53(3):437-442

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技术支持的"非正规学习"研究新进展     

侯小杏  杨玉芹  焦建利 《远程教育杂志》2007,4(6):4-15

对大部分人来说,当我们讨论学习时,我们会不可避免地将其与正规的教育系统联系起来。但任何关于ICTs在儿童学习中角色的研究都使我们认识到,在校外情景中,儿童非常容易沉浸于ICTs相关的活动中,这就迫使我们必须用更广阔的视角来审视包括学校、家庭、休闲、图书馆、博物馆等在内的"教育生态学"。本综述首先对"非正规学习"进行了界定,指发生在学校环境之外,数字技术支持或与数字技术交互的非正规学习;接着讨论了本研究所依据的学习的核心理论以及在ICTs支持的关于学习的研究中不断产生的新的学习理论;勾勒出儿童在校外获取和使用数字技术的情景;然后基于已有的关于技术支持的非正规学习的案例,总结提炼出技术支持的非正规学习的关键特征;最后对这些研究的理论和政策含义进行了深入的研究和剖析。  相似文献   

BOOK REVIEWS     

David Carless  Julian Elliott  Flora L. F. Kan 《比较教育学》2006,42(4):563-569

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Stylistic Variation at the "Single-Word" Stage: Relations between Maternal Speech Characteristics and Children's Vocabulary Composition and Usage     

Julian M. Pine  Elena V. M. Lieven  Caroline F. Rowland 《Child development》1997,68(5):807-819

In this study we test a number of different claims about the nature of stylistic variation at the "single-word" stage by examining the relation between variation in early vocabulary composition, variation in early language use, and variation in the structural and functional propreties of mothers' child-directed speech. Maternal-report and observational data were collected for 26 children at 10, 50, and 100 words, These were then correlated with a variety of different measures of maternal speech at 10 words, The results show substantial variation in the percentage of common nouns and unanalyzed phrases in children's vocabularies, and singficant relations between this variation and the way in which language is used by the child. They also reveal singficant relations between the way in whch mothers use language at 10 words and the way in chich their children use language at 50 words and between certain formal properties of mothers speech at 10 words and the percentage of common nouns and unanalyzed phrases in children's early vocabularies, However, most of these relations desappear when an attempt is made to control for ossible effects of the child on the mother at Time 1. The exception is a singficant negative correlation between mothers tendency to produce speech that illustrates word boundaries and the percentage of unanalyzed phrases at 50 and 100 words. This suggests that mothers whose sprech provides the child with information about where new words begin and end tend to have children with few unanalyzed. phrases in their early vocabularies.  相似文献   

Handling missing data: analysis of a challenging data set using multiple imputation     

Maria Pampaka  Graeme Hutcheson  Julian Williams 《International Journal of Research & Method in Education》2016,39(1):19-37

Missing data is endemic in much educational research. However, practices such as step-wise regression common in the educational research literature have been shown to be dangerous when significant data are missing, and multiple imputation (MI) is generally recommended by statisticians. In this paper, we provide a review of these advances and their implications for educational research. We illustrate the issues with an educational, longitudinal survey in which missing data was significant, but for which we were able to collect much of these missing data through subsequent data collection. We thus compare methods, that is, step-wise regression (basically ignoring the missing data) and MI models, with the model from the actual enhanced sample. The value of MI is discussed and the risks involved in ignoring missing data are considered. Implications for research practice are discussed.  相似文献   

On the nature of buffoonery     

Julian L. Simon 《Academic Questions》1997,10(3):8-9

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