What Is Impostor Syndrome? Imposter syndrome, also known as “fraud syndrome” and “impostor phenomenon,” is the mismatch between internal beliefs about oneself and the external evidence and outside viewpoints about you. (*) Research shows that 70 percent of all people have experienced the Impostor Phenomenon at some point in their lives. (*) People with impostor syndrome under-appreciate and under-value their own talents and skills. At the same time, they are good at hiding behind an image…