Definition of alter ego

The term "alter ego" is a Latin phrase that literally translates to "other self." In psychology, an alter ego refers to an alternate personality, distinct from the individual's primary personality, that may emerge in certain situations. This concept originated in the 19th century when Sigmund Freud introduced the theory of the unconscious mind. He suggested that our personality is not a unified whole, but rather a complex structure made up of different layers, including the conscious, preconscious, and unconscious. Within the unconscious, Freud believed that there exist repressed unconscious conflicts that can manifest in various ways, including the creation of alternate personalities. This theory of split personality has been explored and popularized in literature, media, and pop culture, leading to the continued use and understanding of the term "alter ego" today.