PMID: 9438808Jan 23, 1998Paper

Birth order and sexual orientation in women

Behavioral Neuroscience
A F Bogaert

Abstract

One of the world's largest databases on human sexuality was used to investigate whether lesbians, like homosexual men, have a later birth order relative to heterosexual comparisons. The women (N > 5,000) were interviewed by investigators at the Kinsey Institute for Sex and Reproduction from 1938 to 1963. The women were dichotomously classified as lesbian (n = 257) or heterosexual (n = 5,008). No significant birth order effect was observed. Results support theories of gender-specific mechanisms in the development of sexual orientation in women and men.

Citations

Jul 20, 2000·Psychological Bulletin·M L LalumièreK J Zucker
Apr 24, 2003·Behavioral Neuroscience·Anthony F Bogaert
Jul 1, 1997·Journal of Child Psychology and Psychiatry, and Allied Disciplines·K J ZuckerR Blanchard
Jun 30, 2006·Proceedings of the National Academy of Sciences of the United States of America·Anthony F Bogaert
May 18, 2006·Proceedings of the National Academy of Sciences of the United States of America·Hans BerglundIvanka Savic
Jan 1, 2011·Evolutionary Psychology : an International Journal of Evolutionary Approaches to Psychology and Behavior·Katariina KangassaloMarkus J Rantala
Apr 13, 2000·Nature·T J WilliamsS M Breedlove

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