Try breaking that down by age and marital status. See for instance: http://jonathansoma.com/singles/#1/3/2/0 http://jonathansoma.com/singles/#1/3/2/0 It certa

Try breaking that down by age and marital status. See for instance: http://jonathansoma.com/singles/#1/3/2/0 http://jonathansoma.com/singles/#1/3/2/0 It certainly isn't 2:1 - that was hyperbole - but it's bad. And it doesn't actually take a large absolute difference to produce huge changes in behavior. A standard economic model of this fact is explained nicely here: http://marginalrevolution.com/marginalrevolution/2010/02/revisiting-the-marriage-supermarket.html http://marginalrevolution.com/marginalrevolution/2010/02/rev... In the efficient market limit, an arbitrarily small perturbation in the effective gender ratio produces arbitrarily large changes in outcomes.