Analysis of the effect of hormones on opposite-sex twin attitudes.
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.
Miller
E M
EM
Department of Economics and Finance, University of New Orleans, USA.
Martin
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N
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*
D013739:Testosterone