CEOs are expected to articulate a compelling vision and values for the organization. Just as important, they represent the “tone at the top” that helps define and maintain a common culture across the organization. So does the board, whether its members realize it or not. How they behave in the boardroom directly affects how the CEO and senior management perceive and embody their roles. Board behavior includes everything from the way it conducts meetings to the quality and character of its discourse to the frequency and honesty of its self-assessments of effectiveness. Ideally, the board will establish an even higher-level tone at the top for the CEO and senior management to model in their conduct of business.