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Compared to studies of male speakers, relatively few studies have investigated acoustic correlates of sexual orientation in women. The present investigation focuses on shedding more light on intra-group variability in lesbians and straight women by using a fine-grained analysis of sexual orientation and collecting data on psychological characteristics (e.g., gender-role self-concept). For a large-scale women's sample (overall n = 108), recordings of spontaneous and read speech were analyzed for median fundamental frequency and acoustic vowel space features. Two studies showed no acoustic differences between lesbians and straight women, but there was evidence of acoustic differences within sexual orientation groups. Intra-group variability in median f0 was found to depend on the exclusivity of sexual orientation; F1 and F2 in /iː/ (study 1) and median f0 (study 2) were acoustic correlates of gender-role self-concept, at least for lesbians. Other psychological characteristics (e.g., sexual orientation of female friends) were also reflected in lesbians' speech. Findings suggest that acoustic features indexicalizing sexual orientation can only be successfully interpreted in combination with a fine-grained analysis of psychological characteristics.

The discourse of gay liberation reads silence surrounding personal participation in same-sex sexualized pleasures as a sign of repression, oppression and a positioning in the closet. In contrast, coming out is an important step towards accepting one's true homosexual self. The demand for the emancipation of the homosexual type further suggests that all same-sex sexualized contact signifies the homosexuality of the subjects involved, regardless of whether they recognize this or not. This compulsory homosexualization of men who have sexualized contact with men does not apply to relationships between male friends ("mates"). A "mateship" union grants a level of privacy otherwise eradicated by a gay liberation movement insistent on the public confession of a homosexual orientation. To remain silent about corporeal pleasures poses a threat to the modernist preference for control of bodies and to the established gay identity. Silence offers a space for the construction of new modes of same-sex intimate relationships within a queer framework.