That's just the time off, though: once both parents are back at work, no law can force them both to devote equal mental & temporal resources to childraising. I

That's just the time off, though: once both parents are back at work, no law can force them both to devote equal mental & temporal resources to childraising. I suspect very strongly that even with forced equality of parental leave, we would see mothers devoting more attention to their children than do father.