>>11651658IQ fluctuates massively
especially in older people they go idiotic as soon as the sun is down, losing a massive part of their intelligence
not that extreme in young people but still
https://www.sciencemag.org/news/2011/10/iq-not-fixed-teenage-brainit also isn't at the same height through the day or through the year
it is a very dynamic thing that can be affected by a great many things
on average you lose 10-20% after puberty and the opposite can happen to, 20-30 points isn't really that rare, 5 to 15 is just so much more common
also tests are just different, most gauge for 150 points in germany if you get 100% right within the set time, you will get 150 points
in the anglo american area they like to use tests that go up to 200
the brain, like any biological system is extremely conservative and will remove any useless excess matter and repurpose it for what is needed
if nothing is needed
it's just a long way down
without acquiring experience and knowledge, there is nothing to offset the loss of intelligence
and anyone here should know plenty of sad examples
