Vinod points me to this post by enfant terrible of cultural economics (?) Tyler Cowen commenting on a Steve Landsburg piece titled “Do girls cause divorce”? The only thing I suggest is that the authors read papers like this one, titled: Differential infant mortality viewed from an evolutionary biological perspective (pdf)-or articles like these. Humans are jigsaw puzzles-one should examine all the pieces before putting it all together….
Update: FuturePundit comments.
P.S. my maternal grandmother had 7 children, 6 sons, 1 daughter. My mother has had 5 pregnancies, 4 sons and 1 daughter (one of the sons was stillborn). I know a woman who is one of many sisters, and all her sisters have only daughters as well.
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