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Archives of Sexual Behavior

, Volume 10, Issue 5, pp 465–475 | Cite as

Is homosexuality familial? A review, some data, and a suggestion

  • Richard C. Pillard
  • Jeannette Poumadere
  • Ruth A. Carretta
Article

Abstract

This report summarizes evidence that sexual orientation is familial. Family studies report that homosexual subjects have more homosexual siblings than do heterosexual subjects and more than would be expected given population frequencies. Twin studies find in general a higher concordance in sexual orientation among monozygotic than among dizygotic twins. Evidence for associated psychopathology in homosexual subjects or their relatives is inconclusive. Possible sources of bias in these reports are discussed and a suggestion is offered that family studies should be undertaken in which the sexual orientation of relatives would be directly ascertained by interview.

Key words

homosexuality genetics twin studies psychopathology 

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Copyright information

© Plenum Publishing Corporation 1981

Authors and Affiliations

  • Richard C. Pillard
    • 1
  • Jeannette Poumadere
    • 1
  • Ruth A. Carretta
    • 1
  1. 1.Family Studies Laboratory, Department of Biobehavioral SciencesBoston University School of MedicineBostonUSA

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