>Why would you think that women entering the workforce must be treated exogenously? I think it's proper to consider this part of the overall improvement. Becau

>Why would you think that women entering the workforce must be treated exogenously? I think it's proper to consider this part of the overall improvement. Because "improvement" normally refers to something like growth in productivity, or growth in income-per-labor-hour. Doubling the family's income by just doubling the total hours worked isn't actually an improvement at all, especially when it just results in doubled competition for certain zero-sum assets[1]. [1] -- http://slatestarcodex.com/2014/06/28/book-review-the-two-income-trap/ http://slatestarcodex.com/2014/06/28/book-review-the-two-inc...