I heard psychopaths have a low heart rate, also blunted physiological response to stress. I am sure there is a high false positive rate but if the person is going to be a CEO it might be worth losing a few candidates.
Good idea. Psychopaths are apparently 1% of the population. People with Narcissistic Personality Disorder (NPD) apparently have very a different brain anomaly. It might be necessary to have separate tests for each: https://bit.ly/2zMPGqB