However, scientists have discovered that while narcissists are convincing leaders, they are so consumed by their own brilliance that it actually cripples their creativity and often causes them to make bad decisions.

They like to squirrel away information from their colleagues and are too focused on themselves to allow others to shine in the workplace, researchers said.

It also prevents proper interaction with colleagues who often vastly overestimate the ability of their overconfident bosses.

Scientists at the University of Amsterdam proved their theory by conducting an experiment involving 150 people, split into groups of three.