This author has a great new piece in the New York Times–a new theory of how marriages have evolved. His theory sounds credible, but he limits it to an American audience; I’d love to test his data comparatively: http://www.nytimes.com/2014/02/15/opinion/sunday/the-all-or-nothing-marriage.html?ribbon-ad-idx=10&rref=opinion&module=Ribbon&version=origin®ion=Header&action=click&contentCollection=Opinion&pgtype=article&_r=0
