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Registered reports engender a review process in which reviewers evaluate the merits of the research question rather than the magnitude or direction of the results. In this process, authors first submit introduction, methods, and prespecified analyses sections of an article. Next, an initial peer-review process assesses the merits of the research question, in the absence of knowing the results. Worthy articles are granted an "in-principle acceptance." The authors, then conduct their study, analyze their data, write up the remainder of their article, and resubmit it. The in-principle acceptance means that if the authors adhere to the research design as originally submitted, then the article will be accepted. Building from seven of the earliest registered reports in education research, our introduction describes the benefits, opportunities, and challenges of registered reports as a means to increasing transparency in research and reducing the number of illusory results.

Scientific progress is built on research that is reliable, accurate, and verifiable. The methods and evidentiary reasoning that underlie scientific claims must be available for scrutiny. Like other fields, the education sciences suffer from problems such as failure to replicate, validity and generalization issues, publication bias, and high costs of access to publications--all of which are symptoms of a nontransparent approach to research. Each aspect of the scientific cycle--research design, data collection, analysis, and publication--can and should be made more transparent and accessible. Open Education Science is a set of practices designed to increase the transparency of evidentiary reasoning and access to scientific research in a domain characterized by diverse disciplinary traditions and a commitment to impact in policy and practice. Transparency and accessibility are functional imperatives that come with many benefits for the individual researcher, scientific community, and society at large--Open Education Science is the way forward.

A long history of laboratory and field experiments have demonstrated that dividing study time into many sessions is often superior to massing study time into few sessions, a phenomenon known as the "spacing effect." We use this well-established finding from the psychology literature as inspiration for investigating how students distribute their study sessions across an entire Massive Open Online Course (MOOC). Drawing on observational tracking log data from 20 HarvardX courses, we examine the relationship between students' allocation of their time in MOOCs and their performance. While controlling for the effect of total time, we show that the number of sessions students initiate is correlated with certification rate, across students in all courses. A one-unit change in session count is positively associated with an estimated 3.4% change in certification odds. When individual students spend similar amounts of time in multiple courses, they perform better in courses where that time is distributed among more sessions, suggesting that the benefit of spacing MOOC study sessions is independent of student characteristics. Our study demonstrates that well-established learning theories can be combined with massive new datasets and innovative approaches to learning analytics to advance our understanding of student practice and learning.

To document wiki usage in U.S. K-12 settings, this study examined a representative sample drawn from a population of nearly 180,000 wikis. The authors measured the opportunities wikis provide for students to develop 21st-century skills such as expert thinking, complex communication, and new media literacy. The authors found four types of wiki usage: (a) trial wikis and teacher resource-sharing sites (40%), (b) teacher content-delivery sites (34%), (c) individual student assignments and portfolios (25%), and (d) collaborative student presentations and workspaces (1%). Wikis created in schools serving low-income students have fewer opportunities for 21st-century skill development and shorter lifetimes than wikis from schools serving affluent students. This study illustrates the exciting potential that Web 2.0 data warehouses offer for educational research. (Contains 3 tables, 2 figures, and 4 notes.)

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