Fertility and intelligence may be correlated, but that does not state much about intelligence and birth rate. Just because two -things are correlated, does not imply causation, and even if they are, their may be non-listed effects which cause results opposite those that would be anticipated with only two factors taken into consideration.
Fertility and intelligence may be correlated, but that does not state much about intelligence and birth rate. Just because two -things are correlated, does not imply causation, and even if they are, their may be non-listed effects which cause results opposite those that would be anticipated with only two factors taken into consideration.