Final answer:
Performance-based compensation and a board of directors are devices available to align the interests of managers and stockholders.
Step-by-step explanation:
There are several devices available to align the interests of managers and stockholders. One important device is the use of performance-based compensation for managers. This means that managers are rewarded based on the performance of the company, such as profitability or stock price. Another device is the presence of a board of directors, who are responsible for overseeing the decisions and actions of the managers. The board represents the interests of the stockholders and ensures that the managers are acting in the best interest of the company.