Cary Stayner is autistic. So was Robert Durst, apparently. One article I remember reading ages ago also suggested that there was speculation about Graham Young, but I don’t believe he was ever officially diagnosed. I’m sure there would be other confirmed ones, but I don’t know of them. Speculated, though? Oh, tons. I’ve heard theories for Dahmer, I’ve heard theories for Kemper, I’ve heard theories for Ted Kaczynski (if one considers him a serial killer), I’ve heard theories for basically every serial killer who happened to be more socially awkward and/or introverted. Now, I feel I should point out that I am in fact autistic myself, and in regards to the theories I mentioned, while I don’t necessarily think that they’re wrong (if I were to really speculate, I’d say I tend to disagree about Dahmer being autistic, Kaczynski I think very likely is, and Kemper I am neutral on) I do feel they are often rooted in stereotypes, and are typically pushed by people who neither have autism themselves nor know anything much about it. Armchair psychology is very dangerous. At the end of the day, though, autistic people are just people. We can be all sorts of things, up to and including killers. However, the vast, vast, VAST majority of of autistic people are not violent, and there is no correlation between ASD and violence. Neurodivergent people are in fact more likely to be victims of violent crime than others. More on reddit.com

Only one, Adam Lanza, had a pre-existing ASD diagnosis. So, the only conclusion you can draw is, "journalists like to say that mass murderers and serial killers have autism." In reality, autistic people can become murderers, but we are not more likely to become murderers than NTs are. More on wrongplanet.net

Generally, it is thought that people with ASPD lack affective empathy, but not cognitive empathy. Empathy can be divided into affective and cognitive empathy. Affective empathy is when you feel what the other person is feeling as if you were feeling it. Think of it like feeling the same distress as the other person is feeling. Cognitive empathy refers to a type of empathy that you can understand what the other person is feeling by taking their frame of reference. This doesn't necessitate actually feeling what the other person is feeling. Therefore, (in this hypothetical) someone with ASPD that has killed a person can in fact feel empathy and understand what family must be going through. However, this lack of affective empathy may hinder the person to be really bothered about it. To a person lacking affective empathy, this event may just be on the same level of information as when the train leaves. Moreover, someone with ASPD may feel remorse or regret because they understand that it is bad and it had a negative impact on their own lives, not necessarily because they felt bad about it. Important note: As you mentioned with the spectrum, what I'm describing here are aggregated differences which cannot readily be projected onto individuals. More on reddit.com

Don't quote me, but I would assume because many rapists, murders and violent offenders have diagnosed mental health/personality disorders other than anti-social personality disorder. So, in those particular samples, the rate of ASPD would go down due to other dx. More on reddit.com