Fair point!

I'm not familiar with PVT, and from the description I thought it seemed itself like a simple (if boring) videogame - or at least measured a subset of similar skills, like reaction time and attention lapse.

Didn't mean to come across as dismissive; I really am interested in broader metrics on this stuff. But don't deprive yourself again just for our sake. Thanks for your work, for reiterating the SAT piece, and for stimulating some great HN discussion.

(ps. You attributed some of the minor, sleep-deprived PVT and SAT deterioration to "getting lost in thought". Do you think you'd encounter the same degree of boredom or drifting focus if you did them again post-experiment, in a well-rested state?)