  Work by John Money, Joan Hampson, and John Hampson on intersexuality (the state of having both female and male biological characteristics) led to the introduction of the technical term gender (1955). They purported to evade the debate between psychology and biology, arguing that while the capacity to learn a gender role and orientation (like a language) was biologically grounded, the specific native role and orientation learned (like language) was contingent upon social environment which became “locked down” at a very early age (1957). Subsequently, the expression gender identity was coined by Robert Stoller and Ralph Greenson in 1964, which helped terminologically separate the notion of social role from psychological sense-of-self. It was ultimately taken up by the likes of Money and Harry Benjamin (Meyerowitz 2002, 117–9), and while debate over etiology continued, views allowing for both biology and social environment in determining gender identity gained somewhat greater prominence (Meyerowitz 2002, 119). Notably, in these views, gender identity is a biological demand to the extent that the capacity for gender identity (as the capacity for language) is viewed as innate. Such a view would seem to suggest that gender, like language, is integral to the human self.