In Sigmund Freud's psychoanalytic theory, the Ego is one of the three components of the personality structure (along with the Id and Superego). Its primary characteristics are:
Operates on the Reality Principle: The Ego's main function is to mediate between the unrealistic demands of the Id and the external real world. It seeks to satisfy the Id's desires in ways that are realistic and socially appropriate.
The Executive of Personality: The Ego is the decision-making component of personality. It uses rational thought and problem-solving to navigate reality.
Mediator: It balances the conflicting demands of the impulsive, pleasure-seeking Id and the moralistic, judgmental Superego.
Uses Defense Mechanisms: To cope with the anxiety arising from the conflict between the Id and Superego, the Ego employs unconscious defense mechanisms like repression, denial, and projection.
Spans all levels of consciousness: The Ego has conscious, preconscious, and unconscious aspects.