Apuleyo wrote:
Most of the serial killers are either dead or never were captured, so it's pretty difficult to accurately diagnose them, don't you think?
Specially because so many of them left deliberately puzzling clues to conceal themselves.
Even if they prove that a few were autistic, the vast majority is shrouded in mysteries.
Everyone that has been caught matches the APD profile I described. Forensic anthropology and archaeology help solve crimes by showing the basic profile of the criminal based on what it behind (intentionally or otherwise) and the results lead to psychological profileing along the same lines. This doesn't diagnose them, but it gives a strong indication of what they will likely be, and all those caught show this along with having the back histories.
Sometimes they leve puzzleing clues merely as a challenge to the authorities or to mark the crime as belonging to them.
Serial killers, while popular in media (movies an pop culture) are not actually that common, which is another reason why they can be profiled with a certain degree of confidence.