In random-effects meta-analysis the between-study variance ([tau][superscript 2]) has a key role in assessing heterogeneity of study-level estimates and combining them to estimate an overall effect. For odds ratios the most common methods suffer from bias in estimating [tau][superscript 2] and the overall effect and produce confidence intervals…

This paper considers the problem in aggregate data meta-analysis of studies reporting multiple competing binary outcomes and of studies using different summary formats for those outcomes. For example, some may report numbers of patients with at least one of each outcome while others may report the total number of such outcomes. We develop a shared…

Reflection plays an important role in medical students' ability to develop diagnostic competence through practice with clinical cases. However, it is not easy for students to develop expert-like performance through self-reflection alone; conversely, seeking feedback from experts constantly in practice is impractical. This study investigates the…

In regression analysis courses, there are many settings in which the response variable under study is continuous, strictly positive, and right skew. This type of response variable does not adhere to the normality assumptions underlying the traditional linear regression model, and accordingly may be analyzed using a generalized linear model…

All nurses may be obliged to care for patients at the end of life. Baccalaureate nursing education should prepare nurses to provide this care, but best practice for end of life care education has not been established. Nurses are not adequately prepared to care for dying patients and grieving families. This research study explored the effectiveness…

The Rasch model is commonly used to calibrate multiple choice items. However, the sample sizes needed to estimate the Rasch model can be difficult to attain (e.g., consider a small testing company trying to pretest new items). With small sample sizes, auxiliary information besides the item responses may improve estimation of the item parameters.…

General education science courses at a Canadian postsecondary institution implemented "Beyond Labz" virtual science labs. Faculty members teaching vocational science-related courses tested this resource. This qualitative study explores faculty member and learner perceptions of the efficacy of these virtual labs in terms of ease of use,…

With the advent of new technologies, cases of online child sexual abuse have become notoriously widespread, rendering it necessary for both teachers and parents to know how to deal with this phenomenon. The aim of this study was to find out which were the main interventions and strategies that both teachers and parents could apply within their…

This study analyzed elementary preservice teachers' (PST) participation in an equity-oriented digital clinical simulation administered in a science methods course. Using the Teacher Moments' open access platform, PSTs completed the simulation, To Intervene or Not, about two students from historically minoritized communities who appeared disengaged…

Despite the growing interest in incorporating response time data into item response models, there has been a lack of research investigating how the effect of speed on the probability of a correct response varies across different groups (e.g., experimental conditions) for various items (i.e., differential response time item analysis). Furthermore,…

Contribution: This research presents a case study of an online peer assessment (PA) implementation in a random processes course. Students were required to submit simulation assignments, and then to evaluate their peers' submissions. The research explored the students' perception of the activity throughout the course using surveys, and their…

Background: Engagement with particle-level simulations can help students visualize the motion and interactions of gas particles, thus helping them develop a more scientifically accurate mental model. Such engagement outside of class prior to formal instruction can help meet the needs of students from diverse backgrounds and provide instructors…

We propose an apparatus that emulates the experiment used by Geiger and Marsden in 1913 to investigate alpha particles (Rutherford) scattering. Using a widely available fused deposition modelling 3D-printer, we built a compartmented and easily assembled educational instrument. The whole apparatus is composed of a 3D-printed chamber and an…

We investigated the characteristics of a medical simulation-based informal learning environment (MSBE) of a science center--an environment not yet studied--to understand its uniqueness and its impact on visiting students. In the MSBE, students interact with, and operate, sophisticated simulators which demonstrate a range of medical situations.…

Human operators often experience large fluctuations in cognitive workload over seconds timescales that can lead to sub-optimal performance, ranging from overload to neglect. Adaptive automation could potentially address this issue, but to do so it needs to be aware of real-time changes in operators' spare cognitive capacity, so it can provide help…