Joseph Bronski has hypothesized that insufficient intelligence prevents individuals from having political agency, that is, the ability to recognize and advocate for better political policies. Based on information he was able to gather, he has determined that roughly 70-95% of the population lacks political agency solely due to deficiencies in intelligence. This is inferred from the general population’s poor performance on tests of reading and mathematics -
More generally, there is no minimal IQ for anything because nothing works as an item with a g loading of 1 (vertical slope). Nevertheless we sometimes put semi arbitrary thresholds for certain decision knowing these to be imperfect but useful (eg military recruits).
From which dataset is the 85th percentile 1100 vs 1230?