Here is the summary of a study comparing student satisfaction and formal test results after using four different types of instruction: traditional classroom, on-line instruction without video, on-line instruction with video, and on-line instruction with interactive video (video organised in small chunks that are well-indexed, and easily manipulated). All groups that used on-line instruction reported higher satisfaction than the group with traditional classroom instruction. The students using on-line instruction without video and those using on-line instruction with linear video scored equal satisfaction. The interactive video group reported higher satisfaction. The test scores (learning outcome) of the group using the interactive video were higher than those of the other three groups.
Does this justify the time investment that making interactive videos require?
(Zang et al, (2006), ‘Instructional video in e-learning: Assessing the impact of interactive video on learning effectiveness’, Information & Management vol. 43: 15–27, [Available on-line: www.sciencedirect.com]