A Bibliographic Review and Meta-Analysis of the Effect of Teaching Behaviors on Learners’ Performance in Videotaped Lectures

Although the discussion about the influence of the instructor-present videos has become a hot issue in recent years, the potential moderators on the effectiveness of an on-screen instructor have not been thoroughly synthesized. The present review systematically retrieves 47 empirical studies on how the instructors’ behaviors moderated online education quality as measured by learning performance via a bibliographic study using VOSviewer and meta-analysis using Stata/MP 14.0. The bibliographic networks illustrate instructors’ eye gaze, gestures, and facial expressions attract more researchers’ attention. The meta-analysis results further reveal that better learning performance can be realized by integrating the instructor’s gestures, eye guidance, and expressive faces with their speech in video lectures. Future studies can further explore the impact of instructors’ other characteristics on learning perception and visual attention including voice, gender, age, etc. The underlying neural mechanism should also be considered via more objective technologies.