> I would have been very surprised to have seen a difference in cognitive ability this quickly
Sleep deprivation is really, really bad for you. Here [0] is one example that tries to measure reaction times compared to drinking (in the context of driving). Being tired is pretty much being drunk. Here [1] is another on cognitive activity.
It’s not surprising to me in the slightest (anecdotally, I suffer from bouts of insomnia and my behaviour, mood and cognitive performance in work is definitely lower during those times. Even a single nights sleep shows a huge change in my mood INE) that if reducing smartphone usage they get more sleep that they pretty much immediately saw improvements.
Sleep deprivation is really, really bad for you. Here [0] is one example that tries to measure reaction times compared to drinking (in the context of driving). Being tired is pretty much being drunk. Here [1] is another on cognitive activity.
It’s not surprising to me in the slightest (anecdotally, I suffer from bouts of insomnia and my behaviour, mood and cognitive performance in work is definitely lower during those times. Even a single nights sleep shows a huge change in my mood INE) that if reducing smartphone usage they get more sleep that they pretty much immediately saw improvements.
[0] https://pubmed.ncbi.nlm.nih.gov/32571274/ [1] https://pubmed.ncbi.nlm.nih.gov/23029352/