Kathy Sierra and Burt Bates also used these types of fonts in their "Head First" series for O'reilly. I have never gotten into those books, but many people love them.
Now that is genuinely interesting. Of course, the raw data is hidden behind a paywall, so we don't really know that "significant" means to the author, or whether the test included slides or just raw text.
Still, this is one of those rare times when I could be right about looking professional (it looks cheesy, can't argue that) but completely wrong if it actually leads to higher retention.
http://seedmagazine.com/content/article/the_revenge_of_comic...
http://slog.thestranger.com/slog/archives/2011/01/13/new-stu...
Kathy Sierra and Burt Bates also used these types of fonts in their "Head First" series for O'reilly. I have never gotten into those books, but many people love them.