Archives of Sexual Behavior

, Volume 11, Issue 6, pp 511–520

A family study of sexual orientation

Authors

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

DOI: 10.1007/BF01542476

Cite this article as:
Pillard, R.C., Poumadere, J. & Carretta, R.A. Arch Sex Behav (1982) 11: 511. doi:10.1007/BF01542476

Abstract

Unmarried men aged 25–35 were recruited through newspaper and radio advertisements for a family studyof sexual orientation.Fifty predominantly homosexual and 50 predominantly heterosexual men comprised the index subjects. The test, questionnaire, and interview battery is described. Subjects were asked about the sexual orientations of their relatives. The homosexual index men report a significant excess of homosexual brothers and more distant male relatives but not of homosexual sisters or female relatives. Moreover, the percentage of homosexual brothers increases with the Kinsey rating of the index subjects. Overall, about 25% of brothers of homosexual men are reported also to be homosexual.

Key words

family studyhomosexualitysexual orientationgeneticsheredity
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Copyright information

© Plenum Publishing Corporation 1982