Early modern European thought held that men and women were essentially the same. During the seventeenth century, medical and legal arguments began to turn against this 'one-sex' model, with hermaphroditism seen as a medieval superstition. This book traces this change in Iberia in comparison to the earlier shift in thought in northern Europe.

Early modern European thought held that men and women were essentially the same, with social forces creating their differences. Such a view made the existence of hermaphrodites easy to accept. During the seventeenth century, medical and legal arguments began to turn against this 'one-sex' model, with hermaphroditism seen as a medieval superstition. This book traces this change in Iberia in comparison to the earlier shift in thought in northern Europe, and with concurrent ideas in Latin America.