First response: Hunh. I’ve taught people to create build-in animations to simplify presentations and increase retention. I’ve created elearning following the same principles.

Not the presentation used in the study, one hopes
Second response: Why? I enjoy it more when content is presented gradually, but maybe all-at-once presentation forces more “constructivist” activity, causing greater comprehension and retention…? Is this one more thing to file under “learners like it more when they can be lazy, but they learn better when they’re challenged”?
Third response: I’d like to see the presentations used, and I’d like to see more trials with different variables. Not because I question the results, but because it really flies in the face of our “knowledge”.
Fourth response: Considering the number of questions on the assessment (nine), the difference between the two results is not huge. I’m just surprised it wasn’t strongly in favor of build-ins.