Good article and all symptoms are related to a singular flaw; an inability to empathise with feeling. We attach memories with our emotional state at the time ie memories of these people are severely limited and vague with no emotional attachments to aid recall. Explains total denial, lack of guilt and absence of regret. They truly live in the moment, constantly.
PS love irony and this not only defines Trump, but the DNC as a whole going on the last 4 years. Nothing is their fault, instead being Trump, deplorable republicans or Russia.