[Zerekoh]

What is truly interesting is the assumption made by medical professionals that SF have traits of psychological disorders, when they are viewing the subject from an outside perspective. I do not know of any medical professionals, that have been Special Forces, to make such claims.

But for conjecture in the discussion of Biological difference, it can be addressed.

As a Special Forces trainer/ evaluator of SF hopefuls, I do know that training brings out traits in those that have the ability and attributes. SF candidates that are successful ARE different, we make them qualified during the training. Sure we give them skills to be good entry level operators, but the qualities that are in them from the start make them successful in the training, and on a team.
We cannot make a Special Forces Soldier with the SOF core attributes, we can only identify them during the training.