(o) Becoming and performing as CEO can be considered a difficult mental test battery.
(o) To test this idea, Fortune 500 CEO education/ability was assessed from 1996 to 2014
(o) Across the last two decades ≈ 40% of CEOs were on the top 1% of cognitive ability.
(o) Even within CEOs, education/ability was associated with company gross revenue.
(o) The CEO filtering structure has remained similar across the last two decades.