Effect of instructor inclusion type and course complexity on students' learning in lecturer video

Instructional contexts using slideshow and lecturer video are reported to be more engaging and appealing to students compared than context without instructor's video. But to which proportion instructor's inclusion should take in the instructional video still remains unknown. This study examined students' perceived instructor's presence (SPIP) and satisfaction using two types of instructor's inclusion, combining with two learning courses at different complexity levels. Explanatory Factor Analysis was done for students' perceived instructor's presence, three factors were identified, sense of connection, usefulness for clear-clarification, helpfulness for assisting-understanding. MANOVA analysis showed that there was interaction effect for students' perceived satisfaction between course complexity and the type of instructor inclusion. For bigger instructor inclusion, students' perceived instructor presence was higher for more complex learning course. For easier learning course, students' satisfaction was higher for smaller instructor inclusion. This preliminary finding provides hints for instructional video designers and facilitators.