MOOC providers could enhance engagement and retention by providing audio-only content in addition to or even instead of video-based content. I've got a couple hours per DAY where I crave quality audio content but am physically unable to watch videos at that time. In contrast, I've only got a couple hours per WEEK that I can watch videos.
This is an interesting approach. I think if they paid more attention to where and when exactly people would engage with content they could increase retention. I also have more time for audio than video and would love lectures of some sort delivered to my mobile. This could create a sort of immersion experience when combined with video and exercises.
