Childhood gender nonconformity (CGN) is a phenomenon in which prepubescent children do not conform to expected gender-related sociological or psychological patterns, or identify with the opposite sex/gender. Typical behavior among those who exhibit the phenomenon includes but is not limited to a propensity to cross-dress, refusal to take part in activities conventionally thought suitable for the gender and the exclusive choice of play-mates of the opposite sex.
Multiple studies have correlated childhood gender nonconformity with eventual homosexuality; in these studies, a majority of those who identify as gay or lesbian self-report being gender nonconforming as children. The therapeutic community is currently divided on the proper response to childhood gender nonconformity. One study suggested that childhood gender nonconformity is heritable.
Gender nonconformity in children can have many forms, reflecting various ways in which a child relates to their gender. In literature, gender variance and gender atypicality are used synonymously with gender nonconformity.
The concept of childhood gender nonconformity assumes that there is a correct way to be a girl or a boy. There are a number of social and developmental perspectives that explore how children come to identify with a particular gender and engage in activities that are associated with this gender role.
Psychoanalytic theories of gender emphasize that children begin to identify with the parent, and that girls tend to identify with their mothers and boys with their fathers. The identification is often associated with the child's realization that they do not share the same genitals with both parents. According to Freud’s theories, this discovery leads to penis envy in girls and castration anxiety in boys. Although there is not much empirical evidence to back up Freud, his theories sparked new conversations surrounding sexuality and gender.