NDLI: Biodemographic and Physical Correlates of Sexual Orientation in Men

Content Provider	Springer Nature Link
Author	Schwartz, Gene Kim, Rachael M. Kolundzija, Alana B. Rieger, Gerulf Sanders, Alan R.
Copyright Year	2009
Abstract	To better understand sexual orientation from an evolutionary perspective, we investigated whether, compared to heterosexual men, the fewer direct descendants of homosexual men could be counterbalanced by a larger number of other close biological relatives. We also investigated the extent to which three patterns generally studied separately––handedness, number of biological older brothers, and hair-whorl rotation pattern––correlated with each other, and for evidence of replication of previous findings on how each pattern related to sexual orientation. We surveyed at Gay Pride and general community festivals, analyzing data for 894 heterosexual men and 694 homosexual men, both groups predominantly (~80%) white/non-Hispanic. The Kinsey distribution of sexual orientation for men recruited from the general community festivals approximated previous population-based surveys. Compared to heterosexual men, homosexual men had both more relatives, especially paternal relatives, and more homosexual male relatives. We found that the familiality for male sexual orientation decreased with relatedness, i.e., when moving from first-degree to second-degree relatives. We also replicated the fraternal birth order effect. However, we found no significant correlations among handedness, hair whorl rotation pattern, and sexual orientation, and, contrary to some previous research, no evidence that male sexual orientation is transmitted predominantly through the maternal line.
Starting Page	93
Ending Page	109
Page Count	17
File Format	PDF
ISSN	00040002
Journal	Archives of Sexual Behavior
Volume Number	39
Issue Number	1
e-ISSN	15732800
Language	English
Publisher	Springer US
Publisher Date	2009-04-22
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Sexual orientation Fecundity Evolution Birth order Handedness Hair whorl Social Sciences Public Health/Gesundheitswesen Sexual Behavior
Content Type	Text
Resource Type	Article
Subject	Arts and Humanities Psychology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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