A crossover interaction between sex, sexual orientation, and handedness.
The distribution of handedness scores was analysed in 1414 heterosexual, bisexual, and homosexual men and women. Hand preference was assessed by a questionnaire that distinguishes consistently right-handed from partially or completely left-handed individuals, and sexual orientation was measured by the Kinsey scales. As expected from population-based studies, heterosexual men were, on average, more left-handed than heterosexual women. By contrast, gay men were more right-handed than lesbians or heterosexual men, and lesbians were more left-handed than gay men or heterosexual women. This crossover interaction suggests that a common variable influences sex, sexual orientation, and hand preference.
Pattatucci
A M
AM
CRCI/PR-SSI, Recinto de Río Piedras, Universidad de Puerto Rico, San Juan. A_PATTATUCCI@UPR1.UPR.CLU.EDU
Patterson
C
C
Benjamin
J
J
Hamer
D H
DH