For me, there is one major problem with this study—it lumps women who work full-time outside the home, those who work part-time outside the home, and those who work only in the home into one category. It makes sense to me that in familes where one spouse works in the marketplace and the other works at home, the time spent would be roughly equal, possibly skewing the results for those couples where both spouses had paid work.
Compare and contrast this statement from the article with the one linked above:
The most educated quarter of the American population works a combined 8.7 hours, while the lowest educated quarter works 6.3 hours—a difference of more than two hours per day.
