The CEO of a major multinational came to our McGill MBA CEO Insights class and told us that, as an introverted leader, he had to put on his “game face” whenever he left his floor. That is, if you want to be a CEO of a big company, you need to act like an extrovert, at times. After studying introverts in the C-Suite, I [Karl Moore] have come to the conclusion that extroverts, like myself, must put on our “game face” and act like an introvert at times, in order to be effective leaders.