@Ragman,
Quote: I think the nature of his afflication was anti-cocial in that he had no ability to understand and interact with others.
He had an ability to understand and interact with others, although those abilities were apparently somewhat limited by his neurodevelopmental disorder. He was able to function in structured social situations, he attended school, belonged to a club for techies in high school, and, after high school, he attended college part-time.
It's more that he was asocial, rather than anti-social. He was withdrawn and relatively non-verbally communicative, seems to have lacked any real social life, and may have been poor at picking up on other people's social or emotional cues, but he didn't go around breaking rules, or getting into fights at school, or setting fires, or harming animals, or doing the sorts of things one associates with anti-social behavior in children and adolescents. And no one, outside of his home, reports witnessing any aggressive or violent behaviors on his part before this shooting rampage.
I don't discount your hypothesis that some medication may have adversely affected him, but, if that's the case, someone had to be writing prescriptions and they have yet to come forward, and no one in law enforcement has mentioned any medication being found in the home. Another possibility is that he was on medication, like an anti-depressant, which he abruptly stopped taking, something that could increase depression and trigger suicidal ideation.
I also don't discount my hypothesis that constantly playing violent video games, particularly by someone who is otherwise socially isolated and quite inept and powerless in the real world, may have helped to fuel and stimulate violent fantasies and a desire to be able to attain that sort of power in the real world by using the real weapons that were in his home and available to him.
The more I think about it, the more I think this whole rampage may have been an expression of a suicidal depression. He may well have been depressed about the lack of a future he saw for himself, given his particular disabilities, and his final acts may have been designed to show the world he had the degree of power he had only previously experienced in video games--his final image would not be that of a gawky nerd and misfit, but of an immensely powerful warrior. Had he not had his mother's mini-arsonal so easily available to him, with a weapon so similar to that in the video games, those fantasies would probably not have turned into reality. But that fantasy did likely include suicide as it's conclusion, just as it did with the Columbine killers.
His mother may have been trying to make some long-range plans for him in some sort of supported living arrangement program, she knew she wouldn't be around forever to watch over him. I really doubt she was trying to get him psychiatrically locked up somewhere because she felt threatened by him, or feared some lack of control on his part. If that was the case, she certainly should have locked those guns up, or gotten them out of the house. To do otherwise wouldn't make much sense.
But we really don't know what was going on in that home between Adam and his mother, or even whether his mother was an emotionally stable individual. If his father or brother ever decide to speak publicly, we might know a lot more.
