That is interesting. Not sure how crucial this studys circumstances are for looking at this, but personally I could swear that my phone screen without a blue light filter keeps me more awake. Maybe that's just a fallacy because it definitely feels way more pleasant for me.
I recognise the same thing, but not limited to phone screens. I associate the warm dim light of incandescent bulbs with evening and winding down. I also associate bright blue light with activity and being awake.
It’s anecdotal, of course. But whenever I’m winding down and I see a bright light I can just feel my body wake up a little.
I wonder if that’s actually as physical as it feels or if it’s caused by the associations.
