IQ is a useful test when applied correctly. Using it on individual is rarely productive, but comparing population groups with similar cultural values is very useful. Two rural towns with a 10 point difference? Maybe the chemical plant down the road is doing something. Boomers being a few points lower then Millennials? Leaded gas.
IQ is a useful test when applied correctly. Using it on individual is rarely productive, but comparing population groups with similar cultural values is very useful. Two rural towns with a 10 point difference? Maybe the chemical plant down the road is doing something. Boomers being a few points lower then Millennials? Leaded gas.