I'm going to have to re-evaluate my experience at BCLU then. Little did I know that sleeping through their courses was actually doing me good....

It would be interesting to read the full study, since there could be a lot of other factors going on. It sounds like a nicely controlled test though. I personally find myself remembering things best when I study intensely for about 30 minutes and then revisit the materials later in the same day.

Maybe I can use this to get corporate naptime introduced at my company.