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1. the self, particularly the conscious sense of self (Latin, “I”). In its popular and quasi-technical sense, ego refers to all the psychological phenomena and processes that are related to the self and that comprise the individual’s attitudes, values, and concerns.

2. in psychoanalytic theory, the component of the personality that deals with the external world and its practical demands. More specifically, the ego enables the individual to perceive, reason, solve problems, test reality, and adjust the instinctual impulses of the id to the demands of the superego. See also antilibidinal ego; body ego.

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Psychology term of the day

February 26th 2024



n. red–green color blindness in which the deficiency is due to absence of the cone photopigment sensitive to green light, resulting in loss of green sensitivity and confusion between red and green (see dichromatism). The condition may be unilateral (i.e., color vision may be normal in one eye). See also protanopia.