Egocentrism is the inability to differentiate between self and other. More specifically, it is the inability to untangle subjective schemas from objective reality; an inability to understand or assume any perspective other than their own.

Although egocentrism and narcissism appear similar, they are not the same. A person who is egocentric believes they are the center of attention, like a narcissist, but does not receive gratification by one's own admiration. An egotist is a person whose ego is greatly influenced by the approval of others while a narcissist is not.