Homosexual orientation in twins: A report on 61 pairs and three triplet sets

@article{Whitam1993HomosexualOI,
  title={Homosexual orientation in twins: A report on 61 pairs and three triplet sets},
  author={Frederick L. Whitam and M. Diamond and J. Mart{\'i}n},
  journal={Archives of Sexual Behavior},
  year={1993},
  volume={22},
  pages={187-206}
}
  • Frederick L. Whitam, M. Diamond, J. Martín
  • Published 1993
  • Psychology, Medicine
  • Archives of Sexual Behavior
  • Twin pairs in which at least one twin is homosexual were solicited through announcements in the gay press and personal referrals from 1980 to the present. An 18-page questionnaire on the “sexuality of twins” was filled out by one or both twins. Thirty-eight pairs of monozygotic twins (34 male pairs and 4 female pairs) were found to have a concordance rate of 65.8% for homosexual orientation. Twenty-three pairs of dizygotic twins were found to have a concordance rate of 30.4% for homosexual… CONTINUE READING
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