At my old job we used to play basketball once a week after work. I can't say either this article is true or not, but one thing for sure: guys with kids were much less eager to leave the court and go home. They were the last to leave and first to beg others (kidless) to stay and play a little longer.
Scariest remark so far. I have long had the same suspicion about those co-workers who love the extra-long hours: they are simply afraid to go home and meet the family(?).
That might also (among other things) be the reason employers love to hear that you have a family.