When designing a study for causal mediation analysis, it is crucial to conduct a power analysis to determine the sample size required to detect the causal mediation effects with sufficient power. However, the development of power analysis methods for causal mediation analysis has lagged far behind. To fill the knowledge gap, I proposed a…

Contribution: A methodology based on the learning by teaching approach facilitated by a mobile learning tool for creating tutorials. A study of the impact this methodology has had on the emotional well-being of students and its correlation with academic performance has also been carried out. Background: Insufficient resources and the absence of…

Pearson sought to explore whether attempting more unique assignments in MyLab IT, an online tutorial and assessment tool used in higher education to teach digital literacy concepts and Microsoft Office application skills, is related to higher exam scores. This Research Report presents findings from one research study: a correlational study Pearson…

Three internally developed mobile apps, "3D Sym Op", "SM2 Chem" and "ARMolVis," available for free on both the Apple App Store and Google Play Store were evaluated in seven studies. Each study was a systematic process of Pre-Test, In-lecture App Demo, App Assisted Interactive Tutorials (AAITs) and/or Independent App…

Smartphones are regular classroom accessories. Educators should work with children to understand the capacity of smartphones for learning and civic engagement, rather than being a classroom distraction. This research supports a collaborative project the authors engaged in with students in two states to discover what the perception of smartphone…

This paper reports on two related instructional intervention projects: one completed and the other ongoing. The first involved a "Tutored-Videotaped-Instruction" (TVI) strategy in a three-course calculus sequence; the second, an NSF-funded project using microcomputers, television, tutoring, testing, and related technologies and methods…

This report summarizes the year's activities of a project at two adult correctional institutions which utilized computers in their educational programs to supplement the existing GED, basic math, language arts, reading, and vocational skills and awareness curriculums. The computer is used as a supplement to the educational programs by providing…

Intelligent computer assisted instruction (CAI) systems are exemplified by several tutorial systems including Tutor-SCHOLAR, Map-SCHOLAR, NLS-SCHOLAR and SOPHIE. The original SCHOLAR program structure made it possible to model the way human tutors interact with students. Further analyses of tutoring and teaching strategies led to the development…

Intelligent tutoring systems (ITS) aim to improve upon previous computer-aided instruction programs by embedding much of the expert knowledge that good human teachers possess. While ITS research has a practical goal of developing programs that assist students in learning, there is little data on their instructional effectiveness. This paper…