According to Bayesian models of judgment, testimony from independent informants has more evidential value than dependent testimony. Three experiments investigated learners' sensitivity to this distinction. Each experiment used a social version of the balls-and-urns task, in which participants judged which of two urns was the most likely source of…

This article provides background information about evidence synthesis, the process of collecting, evaluating, and summarizing results from multiple studies that have investigated the same research question. The article also examines the critical role of librarians in conducting evidence synthesis, and examines the accelerating uptake of systematic…

Evidence syntheses that engage librarians as co-authors produce higher-quality results than those that do not. Trained as teachers, researchers, and information managers, librarians possess expert knowledge on research methodologies and information retrieval approaches that are critical for evidence synthesis. Researchers are under increasing…

Reviewing complex interventions is challenging because they include many elements that can interact dynamically in a nonlinear manner. A systems perspective offers a way of thinking to help understand complex issues, but its application in evidence synthesis is not established. The aim of this project was to understand how and why systems…

Funded by the H-1B visa program, the U.S. Department of Labor (DOL) American Apprenticeship Initiative (AAI) provided funding to 46 grantees across the country to expand registered apprenticeship into new sectors, such as healthcare, and to populations underrepresented in apprenticeships. DOL commissioned an evaluation of the AAI grants to build…

Background/Context: Attrition has been described as "the Achilles Heel of the randomized experiment" (Shadish et al., 1998 p.3). Attrition looms as a threat because it can undermine group equivalence, eroding the methodological strength at the heart of a randomized evaluation. In particular, attrition could result in unobserved…

Feedback is an integral part of education and there is a substantial body of trials exploring and confirming its effect on learning. This evidence base comes mostly from studies of compulsory school age children; there is very little evidence to support effective feedback practice at higher education, beyond the frameworks and strategies advocated…

Despite a major increase in the range and number of software offerings now available to help researchers produce evidence syntheses, there is currently no generic tool for producing figures to display and explore the risk-of-bias assessments that routinely take place as part of systematic review. However, tools such as the R programming…

How do we deal with unlikely witness testimonies? Whether in legal or everyday reasoning, corroborative evidence is generally considered a strong marker of support for the reported hypothesis. However, questions remain regarding how the prior probability, or base rate, of that hypothesis interacts with corroboration. Using a Bayesian network…

The short time frame associated with rapid reviews can be challenging for researchers conducting qualitative evidence synthesis. In these circumstances a Best-Fit Framework Synthesis, drawing upon existing theory and/or research, may be conducted to rapidly make sense of qualitative evidence. This article discusses a "Rapid Best-Fit"…

Purpose: Educators need to engage in continuous learning to ensure that their knowledge and practice responds to the changing needs of society and students. Collaborative approaches, in which social capital resource is exchanged, can serve as an effective way of facilitating such learning. With this systematic review, the authors identify the…

Despite decades of research and thousands of peer-reviewed articles on nonverbal communication written by a worldwide community of academics, a number of people in position of power, including security, justice and legal practitioners have embraced "body language" pseudoscience. This autoethnography aims to offer an otherwise…

Some patients benefit from a treatment while others may do so less or do not benefit at all. We have previously developed a two-stage network meta-regression prediction model that synthesized randomized trials and evaluates how treatment effects vary across patient characteristics. In this article, we extended this model to combine different…

Stereotypes can exert a powerful influence on our interactions with others, potentially leading to prejudice when factual evidence is ignored. Here, we identify neuroanatomical and developmental factors that influence the real-time integration of stereotypes and factual evidence during live social interactions. The study uses precisely quantified…

Background: Evidence syntheses provide the basis for evidence-based decision making in healthcare. To judge the certainty of findings for the specific decision context evidence syntheses should consider context suitability (ie, generalizability, external validity, applicability or transferability). Our objective was to determine the status quo and…