 One way to interpret Beauvoir’s claim that one is not born but rather becomes a woman is to take it as a claim about gender socialisation: females become women through a process whereby they acquire feminine traits and learn feminine behaviour. Masculinity and femininity are thought to be products of nurture or how individuals are brought up. They are causally constructed (Haslanger 1995, 98): social forces either have a causal role in bringing gendered individuals into existence or (to some substantial sense) shape the way we are qua women and men. And the mechanism of construction is social learning. For instance, Kate Millett takes gender differences to have “essentially cultural, rather than biological bases” that result from differential treatment (1971, 28–9). For her, gender is “the sum total of the parents’, the peers’, and the culture’s notions of what is appropriate to each gender by way of temperament, character, interests, status, worth, gesture, and expression” (Millett 1971, 31). Feminine and masculine gender-norms, however, are problematic in that gendered behaviour conveniently fits with and reinforces women’s subordination so that women are socialised into subordinate social roles: they learn to be passive, ignorant, docile, emotional helpmeets for men (Millett 1971, 26). However, since these roles are simply learned, we can create more equal societies by ‘unlearning’ social roles. That is, feminists should aim to diminish the influence of socialisation.