skeptical that it’s placebo-like, as you seem to be indicating
Just to clarify my point: I was suggesting it was more like a confirmation bias than placebo. In my case at least, I used to think that sleep deprivation lowered my performance, and then started believing there was no correlation at all (although lack of sleep still affected my mood, so it was undesirable). However, I have little confidence in that belief, and even if I was more certain about it, it’s just an anecdote.
Just to clarify my point: I was suggesting it was more like a confirmation bias than placebo. In my case at least, I used to think that sleep deprivation lowered my performance, and then started believing there was no correlation at all (although lack of sleep still affected my mood, so it was undesirable). However, I have little confidence in that belief, and even if I was more certain about it, it’s just an anecdote.