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Given that sleep deprivation is commonly assumed to lead to worsening reaction times, rote tasks should show an effect. It is interesting they didn't.

Apart from that, I agree that there is more to sleep deprivation than reaction performance. For example, some of my most creative moments were in highly sleep-deprived states. But how am I supposed to measure that?

It's interesting, but it doesn't look like the reaction time windows are particularly tight. 500ms is a generous reaction time. And the FPS scenario didn't really test snap accuracy or reaction time, the limiting factor on completion time seems largely dependent on movement.

I think a more interesting metric of reaction time would be using a competitive FPS or fighting game, that require tight reaction times and decision making. That way, any change in reaction time will be reflected.

It's hard to find a "new thing" to learn that you can reliably compare to the previous "new things".

Or drive 60 miles in rush hour traffic.

I hope to test skill acquisition during the next experiment!