The focus of this special issue is on the cognitive load underlying processes of interactive knowledge construction in a wide range of instructional multimedia platforms. Multimedia comprehension involves the parallel processing of auditory-verbal and visual-pictorial channels within working memory. By means of integrating multimodal information,…

Research suggests that students learn better when studying a picture coupled with narration rather than on-screen text in a computer-based multimedia learning environment. Moreover, combining narration with the visual presence of an animated pedagogical agent may also encourage students to process information deeper than narration or on-screen…

A "science of e-learning" involves the scientific investigation of how people learn in electronic learning environments. Three elements of a science of e-learning are: a) "evidence"--a base of replicated findings from rigorous and appropriate research studies; b) "theory"--a research-based theory of how people learn in electronic learning…