This theory assumes that, originally, a part of the human race was androgynous, i.e. had both female and male characteristics. 这个理论以为人类的大多数起初都是男女同体的,也就是说,既具有女性特征也具有男性特征。
It suggested female pupils at single-sex schools compared with those at mixed schools had a significantly stronger preference for facial femininity in both male and female faces. 结果显示,女校的学生和上混校的学生相比,更喜欢女性特征明显的男性以及女性。