Impostor syndrome (IS) refers to an internal experience of believing that you are not as competent as others perceive you to be. While this definition is usually narrowly applied to intelligence and achievement, it has links to perfectionism and the social context.

To put it simply, imposter syndrome is the experience of feeling like a phony—you feel as though at any moment you are going to be found out as a fraud—like you don’t belong where you are, and you only got there through dumb luck. It can affect anyone no matter their social status, work background, skill level, or degree of expertise.

The term that was first used by psychologists Suzanna Imes and Pauline Rose Clance in the 1970s. When the concept of IS was introduced, it was originally thought to apply mostly to high-achieving women. Since then, it has been recognized as more widely experienced.