The Mirror Stage is a psychoanalytic concept that describes the developmental stage where infants view their reflection in a mirror as a part of themself rather than a real experience in a fragmented body.  

The misrecognition of self that occurs in the mirror stage can create a false illusion of wholeness or an idealized image of “I.” While most children grow out of this stage, twins are faced with the rare experience of viewing their own reflection in another person for their entire lives.