That's right: a 25-year study that tracked 2,500 married couples found that female breadwinners were 40 percent more likely to divorce their lower-earning husbands than women who raked in less than their partners.
Reporting his findings in the October issue of Journal of Family Issues, sociologist Jay Teachman at Western Washington University noted that the distinction only becomes apparent when women earn 60 percent or more of the family's income.
After that marker, couples became 38 percent more likely to divorce over the 25-year period.
Researchers were "surprised about the strength of the effect," Teachman said, also noting that some of the study's participants -- married between 1979 and 2002 -- may be of "a different generation" with outdated marital expectations.
Teachman speculates that male egos might also contribute to the increased split rate. Here at Surge Desk, we'd also like to offer a third, corollary explanation: testosterone.
The hormone, which doesn't start to dwindle in men until they hit 45, is now being blamed for top-tier male execs making rash, ill-conceived and aggressive business decisions. And, to go a step further, we'd like to suggest, perhaps it's also responsible for male mates making haste to sign those divorce papers. After all, marriage is ultimately a contract.