The Sex/Gender Distinction

The sociological study of gender rests, historically, on an analytical move: separating biological sex from gender as a social category. Before this move, gender differences in behavior, occupation, temperament, and social role were routinely explained as direct expressions of biological sex, and therefore treated as natural, universal, and largely beyond the domain of social science. The sex/gender distinction reframed these patterns as variable, institutionally shaped, and amenable to empirical investigation.

The locus classicus in anglophone sociology is Ann Oakley's Sex, Gender and Society (Oakley 1972, pp. 16-18). Oakley proposed that sex refers to the biological differences between male and female bodies — chromosomal, gonadal, anatomical — while gender refers to the cultural meanings, roles, and expectations built around those differences. The pairing was not entirely new: the endocrinologist John Money had used similar terminology in the 1950s and the psychiatrist Robert Stoller had distinguished gender identity from sex in the 1960s (Stoller 1968, pp. ix-x). But Oakley systematized the distinction for a sociological audience and gave it an explicitly comparative, anti-essentialist edge: if gender is culturally produced, one should find it organized differently in different societies, and one does.

The parallel move in feminist anthropology and critical theory was Gayle Rubin's 1975 essay 'The Traffic in Women: Notes on the Political Economy of Sex' (Rubin 1975, pp. 157-159). Rubin introduced the concept of a 'sex/gender system' — 'the set of arrangements by which a society transforms biological sexuality into products of human activity' — and argued that kinship systems, exchange of women in marriage, and sexual division of labor together constituted a systematic mode of organizing human reproduction and desire. Where Oakley offered a distinction, Rubin offered a relational concept: sex and gender are not two parallel facts but linked through an identifiable social machinery.

The analytical payoff of the distinction was substantial. It opened a research agenda in which differences in labor force participation, educational attainment, political representation, domestic responsibility, and sexual behavior could be studied as socially produced, variable across time and place, and responsive to institutional change. It underwrote the argument that where such differences were unequal, they were not thereby natural or inevitable. Lorber's Paradoxes of Gender (Lorber 1994, pp. 13-20) summarized the resulting program: gender as a social institution, comparable in analytical status to religion, the economy, or the state.

Two qualifications are important. First, the distinction has been complicated by subsequent work, not abandoned. Biologists of sex have emphasized that sex itself is not cleanly binary: intersex conditions, variations in chromosomal, gonadal, and hormonal sex, and developmental variability mean that the biological substrate is more plural than the classic binary framing suggested (Fausto-Sterling 2000, pp. 30-45). Feminist theorists, most influentially Judith Butler, have argued that the distinction itself can reinscribe the naturalness of sex by treating it as the pre-social base on which gender is built; on Butler's account, both sex and gender are produced within signifying systems (Butler 1990, pp. 6-10). Contemporary sociology largely retains the sex/gender distinction as a useful analytical starting point while recognizing these complications.

Second, the distinction does not imply that biology is irrelevant to gender. It implies that biology under-determines gendered social arrangements — that the same biological substrate supports widely varying gender orders, and that the arrangements themselves require social explanation. Connell's later formulation captures this: gender is the social organization of bodily difference, not a translation of biological fact into social consequence (Connell 2005, pp. 71-73). The sociological move, in short, is not to deny biology but to identify the explanatory domain in which social processes do work that biology cannot do on its own.