Narcissism, psychopathy, Machiavellianism, and sadism are known as the dark quartet of personality disorders that have been linked to incompetent supervision in many workplaces. Studies have shown the value of a good leader and the impact of their character traits, abilities, and leadership styles on team productivity. However, it is still unclear why some individuals who rise to leadership positions are ineffective or even harmful.

The answer may lie in the fact that people with these traits often have a strong desire to obtain leadership roles. This can lead to unhealthy and unproductive work environments if not managed properly. It is essential to be mindful of the qualities and behaviors of those in positions of authority when building strong leadership teams and fostering a positive workplace culture. Only then can we ensure a successful and harmonious work environment for all employees.