Researchers often include covariates when they analyze the results of randomized controlled trials (RCTs), valuing the increased precision of the estimates over the potential of inducing small-sample bias when doing so. In this paper, we develop a sufficient condition which ensures that the inclusion of covariates does not cause small-sample bias…

Clinically appropriated and procedurally correct hand hygiene is performed less than 50% of the time by health professionals resulting in suboptimal patient care. The use of serious simulation games has been suggested to provide emerging health professional students the opportunity to practice proper hand hygiene behaviors to individualized,…

In this study, the nuts and bolts of designing and building a high powered rocket have been presented. A computer simulation program called RockSim was used to design the rocket. Simulation results are consistent with time variations of altitude, velocity, and acceleration obtained in the actual flight. The actual drag coefficient was determined…

A new program, ECEP2D, for simulating the one-dimensional (1D) and two-dimensional (2D) patterns of the gel electrophoresis of a protein after it has been digested by one or more enzymes is introduced. With ECEP2D, students can gain deeper insights into gel electrophoresis by performing hands-on simulations. For example, students can visualize how…

Collapsing categories is a commonly used data reduction technique; however, to date there do not exist principled methods to determine whether collapsing categories is appropriate in practice. With ordinal responses under the partial credit model, when collapsing categories, the true model for the collapsed data is no longer a partial credit…

Can we coherently conceive of our having knowledge inserted into our minds, bypassing forms of knowledge acquisition hitherto relied on? In this article, John Tillson contends that there is value in giving serious consideration to this question. First, insofar as technology develops apace, it is wise to start thinking about how we would use it…

In this article, state of the art on virtual reality (VR) for individuals with autism spectrum disorder (ASD) with a focus on training/targeted intervention is discussed and reflected upon to explore areas for more future benefits. We present advantages of VR for individuals with ASD. We identify challenges and design issues for future training…

Past research suggests that speakers gesture more when motor simulations are more strongly activated. We investigate whether simulations of a perceptual nature also influence gesture production. Participants viewed animations of a spider moving with a manner of motion that was either highly salient (n = 29) or less salient (n = 31) and then…

In this article a new authorial EduPython application is presented. It is an online tool that supports the teaching of physics using a problem-solving method. It gives the teacher an opportunity to collect data that students send using their smartphones. The application uses the data to produce a collective answer of all the students which gives…

Cognitive diagnosis models (CDMs) allow for the extraction of fine-grained, multidimensional diagnostic information from appropriately designed tests. In recent years, interest in such models has grown as formative assessment grows in popularity. Many dichotomous as well as several polytomous CDMs have been proposed in the last two decades, but…

Augmented Reality (AR) has been used in various contexts in recent years in order to enhance user experiences in mobile and wearable devices. Various studies have shown the utility of AR, especially in the field of education, where it has been observed that learning results are improved. However, such applications require specialized teams of…

Empathy has been recognised as a key skill by practicing designers. With rapid changes to inclusivity and accessibility in the transport sector, student designers need to appreciate and understand the way in which people of differing abilities are able to engage with and interact with transport. They need to not only develop an understanding of…

Range restrictions, or raters' tendency to limit their ratings to a subset of available rating scale categories, are well documented in large-scale teacher evaluation systems based on principal observations. When these restrictions occur, the ratings observed during operational teacher evaluations are limited to a subset of the available…

Three-dimensional virtual world (3DVW) have been adopted extensively in the education sector worldwide, and there has been remarkable growth in the application of these environments for distance learning. A wide variety of universities and educational organizations across the world have utilized this technology for their regular learning and…

In recent years, virtual play spaces have become enormously popular among young children around the world. As yet, though, there has been relatively little research into the ways in which children interact on such sites and what they learn in the process. This article describes a study of kids' experiences with one such virtual world, Club…