Sibling sex ratio and male homosexuality.

  title={Sibling sex ratio and male homosexuality.},
  author={Brian K. Suarez and Thomas R. Przybeck},
  journal={Archives of sexual behavior},
  volume={9 1},
As an explanation for the increased sex ratio observed in the sibships of male homosexuals, Slater has hypothesized that the increase, itself, may be a causative factor in predisposing a male to homosexual behavior. As a test of this hypothesis, an additive and a multiplicative risk model relating male homosexuality to the sexual configuration of the homosexual's sibship were formulated and tested against published data. Both models were found to predict a curvilinear decrease in sibling sex… CONTINUE READING