Intersex variations render a person's body different from both normative male and female embodiment. Medical intervention on infants' intersex traits is long standing, common, and contested for breaching human rights to bodily integrity and self-determination. Such intervention is justified by the threat of unbearable social stigma, but empirical studies of stigma and public understanding are lacking. Here, U.K. and U.S. participants (N ϭ 271) reported their free associations to three contested "umbrella terms" for intersex and their opinions about diverse medical and social responses. Among the umbrella terms, hermaphrodite prompted most references to nonhumans, intersex prompted most references to social identities, and disorders of sex development prompted most references to children. Participants' opinions about medical and social responses to intersex traits were more consistently predicted by sexual identity than any other demographic variable; LGBϩ participants endorsed social responses more, while heterosexual participants endorsed medical responses more. Beliefs in nonbinary gender and lower right-wing authoritarianism predicted support for social responses and opposition to medical responses and accounted for some sexual identity differences. Social and clinical implications are discussed.
Public Significance StatementMedical intervention targeting infants' intersex traits is a controversial way to reduce the impact of stigma on such children, but public understanding of intersex is rarely studied. Two hundred seventy-one U.S. and U.K. laypeople's understandings of controversial "umbrella terms" in this area and opinions about medical and social interventions are described. Heterosexual people endorsed medical interventions more and social interventions less than LGBϩ people in part because heterosexual people were more authoritarian and endorsed gender binary beliefs more.