Ha! Thanks for the kind words Troop, its a subject that really does fascinate me.. perhaps a little too much!
Take a look at: https://www.smithsonianmag.com/science-nature/the-neuroscientist-who-discovered-he-was-a-psychopath-180947814/
If it's of any interest. A great doc into the subject, where the neuroscientist actually finds out he fits the cognitive profile, midway through testing.