How to Ace an Interview: Feel Powerful: Scientific American

It is already well established that people who feel empowered pay more attention to rewarding information, express themselves more freely when interacting with others, and experience more positive emotion. They also tend to be more persuasive, less susceptible to the influence of others, and more confident. Power breeds optimism, higher self-esteem, and action in pursuit of goals. By contrast, those lacking in perceived power experience a reduced sense of control and diminished access to resources or rewards, which in turn may lead to pessimism, depression, a withdrawal from activity, and poor health.