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Often, the evidence we observe is consistent with more than one explanation. How do learners discriminate among candidate causes? The current studies examine whether counterfactuals help 5-year olds (N = 120) select between competing hypotheses and compares the effectiveness of these prompts to a related scaffold. In Experiment 1, counterfactuals support evidence evaluation, leading children to privilege and extend the cause that accounted for more data. In Experiment 2, the hypothesis that accounted for the most evidence was pitted against children’s prior beliefs. Children who considered alternative outcomes privileged the hypothesis that accounted for more observations, whereas those who explained relied on prior beliefs. Findings demonstrate that counterfactuals recruit attention to disambiguating evidence and outperform explanation when data contrast with existing beliefs. 相似文献
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Melanie Walker 《Higher Education》2018,76(3):555-569
The focus is on the micro-possibilities of student capabilities formation as the end of public-good higher education, rather than on a systems or organizations approach more commonly found in discussions of the public good and higher education. This does not discount other valuable public-good ends. Using South Africa as a global South context, a capability-based approach to the public good of higher education is proposed for its humanizing ethic, attention to fair opportunities, and participation in terms of what students are able to do and to be in and through higher education. A capability frame is complemented by thinking about decoloniality and epistemic justice to help identify central higher education capabilities. The three proposed intersecting capability dimensions are as follows: personhood self-formation, epistemic contribution, and sufficiency of economic resources, intended to guide university practices and policy interventions in the direction of the public good. By populating the space of the public good with capabilities, a shift is made away from micro-economics which see the public good as a reductionist space of commodities and human capital development. Higher education is rather understood as having both instrumental and intrinsic value, generating an alternative logic to that of neo-liberalism, and an individualist ontology of competition and untrammeled markets. The pressures of the global context are acknowledged so that the public good is understood as both “ideal-aspirational” but also “practical-feasible” in the light of local South African conditions. An expanded capability-based framing would contribute to reducing higher education inequalities as a public-good and public-accountable contribution by universities. 相似文献
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Allan Walker 《Peabody Journal of Education》2013,88(5):468-485
In this article we discuss how school leaders address challenges when implementing innovative international education curricula, namely International Baccalaureate (IB) programs. Specifically, we frame challenges in curriculum implementation of and transition between IB programs from a “disconnection” perspective. We have often noticed when innovative programs are parceled together without preparation and thrust at great speed at schools, they become disconnected. The hasty implementation of multiple IB programs simultaneously at a school also causes disconnection. Drawing on extensive interview data from principals, mid-level leaders, and teachers in five IB schools adopting multiple IB programs in Asia, we detail curriculum disconnection facing IB schools and how school leaders, including teacher leaders, address such challenges by weaving various disconnected points, namely instrumental, intellectual, cultural, professional, and communicative disconnections. Based on findings from the multisite case study, we argue that school leaders in the case of IB schools adopt a range of leadership strategies to weave disconnection points. We reframe the leadership strategies as two aspects of distributed leadership: distributed instructional leadership and teacher leadership. In conclusion, we suggest that a central facet for successful leadership of IB schools that adopt multiple IB programs is about finding, focusing, and facilitating ways to address disconnections in curriculum implementation of and transition between different IB programs. 相似文献
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David A. Walker Portia M. Downey Diane Kuehl 《Community College Journal of Research & Practice》2013,37(12):959-969
Using a teacher recruitment and preparation model, a unique partnership between PK–12 schools, a community college, and a university is examined. The focus is on the training and credentialing of future educators, particularly from underrepresented backgrounds, in an efficient and quality manner to assist in meeting the current PK–12 teacher shortage. Data indicate that the partnership is progressing towards, or has met, its targets in addressing said shortage. 相似文献
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The paper combines a comprehensive account of the probabilistic model of retrieval with new systematic experiments on TREC Programme material. It presents the model from its foundations through its logical development to cover more aspects of retrieval data and a wider range of system functions. Each step in the argument is matched by comparative retrieval tests, to provide a single coherent account of a major line of research. The experiments demonstrate, for a large test collection, that the probabilistic model is effective and robust, and that it responds appropriately, with major improvements in performance, to key features of retrieval situations.Part 1 covers the foundations and the model development for document collection and relevance data, along with the test apparatus. Part 2 covers the further development and elaboration of the model, with extensive testing, and briefly considers other environment conditions and tasks, model training, concluding with comparisons with other approaches and an overall assessment.Data and results tables for both parts are given in Part 1. Key results are summarised in Part 2. 相似文献
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Pam Sammons Sally Thomas Peter Mortimore Adrian Walker Rosemary Cairns John Bausor 《School Effectiveness & School Improvement》2013,24(3):286-309
As part of a large‐scale study of the ability of 94 secondary schools to promote academic achievement, case studies of six outlier schools were conducted and headteachers (principals) and their deputies were questioned about the processes of effectiveness. The analysis of their responses ‐ grouped by the performance of their school (measured by value added analyses of three years of public examination results) as effective, ineffective or mixed ‐ reveals considerable support for previously cited characteristics of effective schooling. Despite the limitations imposed by a reliance on the use of retrospective accounts, the study takes forward the field of school effectiveness in its search for generalisable findings and coherent theory. 相似文献