Westermarck Effect and Its Opposite
Anthropologist Edvard Westermarck found that children who are brought up together as siblings are desensitized to form sexual attraction to one another later in life. This is known as the Westermarck Effect. It can be seen in biological and adoptive families, but also in other situations where children are brought up in close contact, such as the Israeli kibbutz system and the Chinese Shim-pua marriage.
The opposite phenomenon, when relatives do fall in love, is known as genetic sexual attraction. This can occur between siblings brought up apart from each other, for example, adoptees who are re-united in adulthood.
Read more about this topic: Brothers
Famous quotes containing the word effect:
“The want of an international Copy-Right Law, by rendering it nearly impossible to obtain anything from the booksellers in the way of remuneration for literary labor, has had the effect of forcing many of our very best writers into the service of the Magazines and Reviews.”
—Edgar Allan Poe (1809–1849)