You'll have to do your own research on that if you want to know. I don't have any horse in this race, personally. I don't have kids and don't have plans to pop

You'll have to do your own research on that if you want to know. I don't have any horse in this race, personally. I don't have kids and don't have plans to pop any out of me, so I don't feel the need to investigate further. But I still want to point out no one in this thread so far has any data or experience interpreting it to claim "my kid is not a rat, therefore the study means very little." I'm happy to be proven that rats aren't a good indicator for what the article claims though. There's a lot of bogus academic papers out there, especially within the past 10 years. But I'm also not going to interpret it with my "gut" feeling of rat != kid on this because it's way out of the scope of what I understand. There's better people outside of hacker news comments that can explain this stuff better.