> The data show same result for female chemical castration of sex offenders
As expected. Why would it not work in females? You'll be easily getting these levels to a very "unnatural" level below the low end for both males and females.
The studies aren't just on self reported feelings. You're looking at reductions in recidivism exceeding 50%. Yes some studies show a much smaller reduction, but AFAIK every study does show some improvement. Sure as I noted myself it could be self-selection as some argue, but nonetheless there isn't a study out there outright disproving it. There are a few countries where it's mandatory but not sure if there's any data from these.
When you've got studies showing efficacy, to disprove them you'd want something of higher rigor. Say a proper RCT. If one says self selection taints the result then you want a study that controls for that.
Again I'm absolutely not opposed to the notion that there's some cultural/societal feedback loop involved. I'm just arguing that administering strong blockers MAY help with many issues relating to aggressiveness. And that these arguments on just how linear or predictable the relationship is are interesting but not that relevant to disproving the practical efficacy of such a treatment.
I fully agree that one shouldn't demonize the hormone itself and anyone who has high levels. That's what that line of research tells me as far as I'm concerned.
> What is your source for that?
Regardless of what causes violence we have a huge undeniable discrepancy between males and females. If we go with the explanation that violent behavior bumps T up that goes nowhere in explaining the enormous sex difference. Don't remember the exact ratio off top of my head by it's definitely somewhere around 1 to 10 so not buying a purely societal explanation. And if you look at the extremes, say serial killers or very brutal forms of murder it grows even wider apart.
So it would seem logical to me that in these violent high T females either the T does matter or it doesn't but is an indication of virilization earlier in life.
As to the claim that testosterone levels would be a proxy for earlier virilization - for example digit ratios are believed to be an indicator of virilization in utero and studies do show that they correlate with adulthood T levels[0]. Pretty sure there are studies relating it to criminality too.
Personally my hunch is that it's a bit of both. Say if we put everyone on these drugs I'd imagine overall violent crime would drop but males would still be vastly outnumber females.
[0] https://europepmc.org/article/med/21592297