4 ms·

IQ levels has risen on average because of nutrients, not using lead and education. An increase in blood lead from 10 to 20 micrograms/dl was associated with a

by ipaddr 2y ago

IQ levels has risen on average because of nutrients, not using lead and education. An increase in blood lead from 10 to 20 micrograms/dl was associated with a decrease of 2.6 IQ

worik 2y ago
> Q levels has risen on average because of... ...nobody really knows why
jfengel 2y ago
Risen by a few points. Statistically significant but not really meaningful.
miramba 2y ago
…and to still believe that IQ levels measure something meaningful is pretty average Joe anyway. Could be the rise of videogames for all we know.
daymanstep 2y ago
IQ score rises (Flynn effect) are most likely spurious and do not reflect any increase in actual on-the-spot problem-solving ability. IQ scores were never intended to be used to compare across cohorts. To do so is invalid.