Gener identity (or core gender identity) is a person's own sense of identification as male or female. The term is intended to distinguish this psychological association, from physiological and sociological aspects of gender.Gender identity was originally a medical term used to explain sex reassignment procedures to the public. The term is also found in psychology, often as core gender identity.Sociology, gender studies and feminism are still inclined to refer to gender identity, gender role and erotic preference under the catch-all term gender.