The worst part about finding something like this to be true, is that Liberals will scream that we must stop treating these poor people as criminals and accept them as they are, after all “they were born that way!”
Hell, we already know this to be true in serial killers - the studies have shown that they started with harming, maiming, and then killing small animals, before finally moving on to hurting and killing humans: Bundy, Dahmer, Gacy, etc...!
Since they're already screaming that we can't treat them as criminals because they're "victims of poverty" or (in the case of non-white criminals) "victims of racism", I'm not sure it makes any difference.