[seiferteric]

How do we know the sleep deprivation isn't the cause of the shrinkage? Not everyone's experience is the same, but ours was pretty bad for the first 6 months or so. Even now at 18 months we wake up usually once a night. I would not be surprised if this has an effect on my brain. That being said, I do feel my brain was "rewired" in a sense, that before I was not a baby person at all, but now I do really appreciate not just my baby but others.

[serf]

>How do we know the sleep deprivation isn't the cause of the shrinkage?

I think that's a valid question -- one likes to assume that it's some adaptability trait, but the reality is that it could just as well be evidence of sub-standard conditions facilitated by the scenario.