Better to move to the next slide automatically or manually?
I am curious what other designers who use Articulate Storyline or Presenters think... If you are developing a typical presentation, basically a PowerPoint presentation with narration, is it better instructionally to move from slide to next slide automatically, or to make the learner click Next? I am talking about "default behavior" here. I understand that a particular slide might have information on it that someone needs to look at more carefully, which would mean manual advancement would be better, but in general which is the better way to go?
I typically advance the presentation automatically, because I assume that some people will just want to watch it like a video, but then I got thinking, maybe it is better to require the learner to click Next for the simple fact of keeping them engaged at that minimal level. I also got some really positive feedback from someone on a module where everything advanced manually, stating that they preferred to advanced things themselves. I'm assuming though that there are others out there that would hate this.
So what is your default design? Auto advance, or manual advance?
Or - does anyone go to the trouble of letting the user decide between the two?(I'm imagining in Storyline you could do this with a variable the user sets at the beginning that determines what happens at the end of each slide)