  In light of this, Hausman critiques Butler for assuming an ahistorical use of gender/sex in her attempt to read sex as “gender all along.” On the contrary, argues Hausman, gender was a historical development (179). Prior to gender, argues Hausman, the reproductive subject (i.e., woman or man understood within a heterosexual framework) was understood in terms of the body as signifier of sex. With the development of gender, the reproductive subject (now understood in terms of heterosexual gender role) is taken to signify gender identity (as the very ground for biological sex) (187–88). Hausman resists Butler's (1990) call to proliferate genders, then, and insists instead on a return to the notion of sex (180).