I remember once reading an article that attention span online drops significantly after just a couple of minutes. I've never again been able to find that article. Does it sound familiar to anyone?
I worry about the length of our online videos. The prsentations themselves are something like six hours, and so each video is about 1.5 hours. This seems WAY too long for one person to watch online. So I ask myself if the objective is for someone to watch the whole thing (eep), or to browse for the content they're looking for. But then they're losing the context or previous laddered learning to fully appreciate that specific explanation or analogy.
How do you decide how long your clips will be?