title: Analysis of the effect of hormones on opposite-sex twin attitudes.
abstract: Numerous reports in the literature suggest that hormones may transfer from one fetus to another, in humans as in animals. In a large sample of over seven thousand Australian adult twins, it was found that opposite-sex females showed a statistically significant tendency to hold more masculine attitudes than did same-sex female twins. This may be due to post-natal social interaction, but could also be caused by the transfer of testosterone from the male to the female fetus in opposite-sex twins.
authors.affiliation: Department of Economics and Finance, University of New Orleans, USA.
authors.forename: E M
authors.initials: EM
authors.lastname: Miller
authors.forename: N
authors.initials: N
authors.lastname: Martin
mesh_terms: D001315:Australia; D005260:Female; D006801:Humans; D008297:Male; D010920:Placenta / Q000502:physiology; D011247:Pregnancy; D011272:Pregnancy, Multiple / Q000502:physiology; D012727:Sex Characteristics; D012737:Sex Factors; D013739:Testosterone / Q000502:physiology*; D014427:Twins / Q000523:psychology*
chemical_list: D013739:Testosterone