Re: correlation of income to fertility. The causation could perhaps go the other way when looked at as potentially genetic preference for smaller families. Sm

Re: correlation of income to fertility. The causation could perhaps go the other way when looked at as potentially genetic preference for smaller families. Smaller families mean children receive a larger percentage of their parents' time and money which will give them an advantage over children whose parents divide their resources among more children. Of course effective birth control is still so new that it throws a wrench in this argument.