Not much time, but I wanted to link to this blog entry which reviews the recent paper by Kanazawa and Vandermassen which surveys 3,000 individuals and finds a strong tendency for people in “systemizing” professions to have sons and vice-versa for those in “empathizing” professions. If you want a “pulse of the public” (or high schoolers posing as programmers) check out this thread at Slashdot.
Addendum: I have heard from animal science people that a variety of alterations in the equilibrium of chemicals in semen can shift the XX:XY balance greatly.
Related: Previous post on this paper.
Posted by razib at 02:19 PM