Latent growth curve mediation models are increasingly used to assess mechanisms of behavior change. For latent growth mediation model, like any another mediation model, even with random treatment assignment, a critical but untestable assumption for valid and unbiased estimates of the indirect effects is that there should be no omitted variable that confounds indirect effects. One way to address this untestable assumption is to conduct sensitivity analysis to assess whether the inference about an indirect effect would change under varying degrees of confounding bias. We developed a sensitivity analysis technique for a latent growth curve mediation model. We compute the biasing effect of confounding on point and confidence interval estimates of the indirect effects in a structural equation modeling framework. We illustrate sensitivity plots to visualize the effects of confounding on each indirect effect and present an empirical example to illustrate the application of the sensitivity analysis. 相似文献
The aims of this study were to administer an assessment measure that would identify prosocial children, bullies and their victims, and to examine the underlying structure of children's perceptions of peer social behaviour in these three groups. Three versions (peer nomination, self and teacher rating) of a newly developed child social behaviour questionnaire (CSBQ) were completed by children (aged 9/10 years, n=321) and their teachers in 14 Scottish primary schools. The CSBQ is distinguished from other extant measures by its joint focus on both prosocial and antisocial child behaviours, and by its use of concrete and empirically derived items. In conjunction with sociometric data, which was also elicited from the children, the CSBQ yielded scores on 12 behavioural dimensions. Based upon the peer nomination data, a set of rigorous criteria, capable of reliably identifying children in the three groups, was developed to take account of varying peer nomination practices within and between schools. Factor analysis of the 12 measures yielded four factors (two antisocial factors, a prosocial factor and a victim factor) which accounted for 71% of the variance, and which offer further insight into the organisation of children's perceptions of social behaviour. Gender differences in peer nomination patterns and comparisons between the different informant groups are discussed in relation to previous work. 相似文献
With greater linguistic diversity in educational settings around the world as a result of international migration, and a rise in autism diagnoses, educators are more frequently teaching children who are both neurodiverse and linguistically different to their peers. The aim of the present study was to uncover the perspectives and experiences of educational practitioners who provide support for bilingual learners on the autism spectrum in two linguistically different educational settings: England and Wales. Semi-structured interviews were conducted with 13 practitioners (5 teachers, 4 teaching assistants, 3 special educational needs coordinators and 1 speech and language therapist) working in mainstream schools. Data were analysed using interpretative phenomenological analysis (IPA), which seeks to illuminate participants' lived experience. Three superordinate themes were extracted from the data: (1) perspectives on bilingualism in autism; (2) comparisons across two linguistically different settings; (3) creating inclusive learning environments. The results demonstrate that practitioners had concerns about the feasibility of bilingualism for some autistic pupils, and argued that exposure to two languages may have a negative impact on their development. Future research should focus on finding effective ways to identify and support learning needs among bilingual pupils to ensure that children who are ‘doubly different’ from their peers not only have access to educational provision, but also have opportunities to harness and celebrate their differences. 相似文献
In this study, we set out to explore processes of individual and group becomings of a self-study collective over time and distance, and with/through technology. Born out of a self-study project in one of our early doctoral courses, our self-study community has evolved over several years to one that is hybrid in nature. As we have continued our collaboration through online media, a tension arose at the juncture of our fundamentally relational work together, our need for the physical, embodied aspect of learning and self-study and the hybrid, often disembodied, experience provided by substituting online meetings for those conducted in-person. In this article we explore these tensions through pivotal moments and lines of flight in our self-study work over the past year. To frame these moments, we draw on ideas from posthumanism, which offers ways to conceptualize our collective as a multiplicity, account for the relational and material aspects of our work, address the agency of non-human actors (such as technology) in our collaboration, and consider our self-study practice a dynamic, complex, contextualized, situated phenomenon. 相似文献
Over the past fifty years, children’s picture books have made great strides toward literary equity by including more perspectives from and stories about marginalized groups, such as those whose gender identities do not conform to heteronormative standards. While texts featuring gender-variant male characters engage in topics that are far too often shoved into the proverbial closet, what is yet to be determined is the degree to which they adequately reflect the complexity of (gender) identity and to what extent such picture books can counter narratives related to traditional “masculinity.” The purpose of this paper is to critically examine picture book representations of gender variance, as exhibited by male characters, in order to determine the books’ potential for exploring issues of social justice with elementary-age students. This study utilizes a critical multiculturalist lens to challenge the ways in which gender variance is represented in children’s literature and the reasons that young gender-variant male protagonists achieve—or do not achieve—communal acceptance. 相似文献
Some of the most ambitious experiments in early radio programming involved the coordination of sounds and visuals. This essay explores the phenomenon of “illustrated radio,” or radio broadcasts enhanced with accompanying visual media such as lantern slides, museum exhibits, and filmstrips. Newspapers, museums, and schools experimented with this format in the 1920s–40s in an effort to expand their audiences and adapt their informational missions to a changing media environment. While relatively short-lived, illustrated radio constituted a significant form of audiovisual broadcasting before television and highlights the range of uses that were envisioned for radio when it was new. 相似文献
Gaelic Football and Hurling are two sporting codes within the Gaelic Athletic Association. The purpose of this study was to report the body composition phenotype of inter-county Gaelic athletic association players, comparing groups by code and field position. 190 senior, male, outfield inter-county players (144 hurlers and 46 Gaelic footballers) were recruited. Stature and body mass was measured, estimates of three components of body composition, i.e. lean mass, fat mass and bone mineral content was obtained by dual energy X-ray absorptiometry (DXA), and normative data for Gaelic athletic association athletes by code and position was compared. Other than in the midfield, there was limited difference in body composition between codes or playing position. Stature-corrected indices nullified any existing group differences between midfielders for both codes. Further comparisons with a non-athletic control group (n = 431) showed no difference for body mass index (BMI); however, the athletic group has a lower fat mass index, with a greater lean mass in accounting for the matched BMI between groups. In addition to providing previously unknown normative data for the Gaelic athletic association athlete, a proportional and independent tissue evaluation of body composition is given. 相似文献
Background: Incorporating student voice into the science classroom has the potential to positively impact science teaching and learning. However, students are rarely consulted on school and classroom matters. This literature review examines the effects of including student voice in the science classroom.
Purpose: The purpose of this literature review was to explore the research on student voice in the science classroom. This review includes research from a variety of science education sources and was gathered and analyzed using a systematic literature review process.
Design and methods: I examined articles from a variety of educational journals. I used three key terms as my primary search terms: student voice, student perceptions, and student perspectives. The primary search terms were used in conjunction with qualifiers that included science education, science curriculum, student emergent curriculum, student centered curriculum, and science. In order to be included in the literature review, articles needed to be published in peer-reviewed, academic journals, contain clearly defined methods (including quantitative, qualitative, or mixed methods), include research conducted in K through 12 classrooms, include the term ‘student voice’, and focus specifically on science. I included articles from a variety of science classrooms including general middle school science, science-specific after-school programs, secondary science classrooms in a variety of countries, and physics, biology, and aerospace classrooms. No restrictions were placed on the country in which the research was conducted or on the date of the research.
Conclusions: The results of the literature review process uncovered several themes within the literature on student voice. Student voice research is situated within two main theoretical perspectives, critical theory and social constructivism, which I used as the main themes to structure my findings. I also identified subcategories under each main theme to further structure the results. Under critical theory, I identified three subcategories: determining classroom topics, developing science agency, and forming identities. Under social constructivism, I discovered four subcategories: forming identities, incorporating prior knowledge and experience, communicating interest in topics and classroom activities, and improving student–teacher relationship. The research supports that allowing students a voice in the classroom can lead them to feel empowered, able to construct their own meaning and value in science, demonstrate increased engagement and achievement, and become more motivated. I conclude students should be allowed a voice in the science classroom and to continue to ignore these voices would be a disservice to students and educators alike. 相似文献
